JP3114283B2 - Music signal generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tone signal generator for automatically adding a tone effect according to a tone performance mode.
Regarding raw equipment .

[0002]

2. Description of the Related Art As an apparatus for realizing a sound image localization (pan) effect in an electronic musical instrument or the like, for example, an apparatus for sequentially moving a position of a sound image localization of a performance sound every time a key is pressed on a keyboard, By performing control to make the sound image localization position different between key press and key release, a device that allows the sound image localization of the performance sound to swing left and right according to key press and key release, or by a key press operation etc. There are conventionally known devices which change the position of sound image localization of a generated sound every time a sounding instruction is issued.

[0003]

According to the apparatus in which the position of the sound image localization of the performance sound is sequentially moved every time the key is depressed, the key depressing operation is performed regardless of the key depressing performance. Every time the operation is performed, the position of the sound image localization is mechanically moved. Therefore, it is impossible to control whether or not the sound image localization is moved or not depending on the key press performance mode.
His musical performance was poor. For example, if the keys are struck repeatedly in tremolo style, the sound image localization movement control is automatically performed, but the sound image localization movement control is not performed in the normal key press style. It is preferable because the power can be increased, but the conventional one cannot. Also, even if the sound image localization of the performance sound is made to swing right and left according to key press and key release, no matter what key press performance is performed,
Since the sound image localization fluctuated left and right, the performance controllability was poor, and the musical performance expression was poor. Similarly, even in the case where the position of the sound image localization of the generated sound is changed every time the pronunciation instruction is issued, since the sound image localization always changes at random, the controllability is poor, and the performance of the player is poor. His will was not reflected, and his musical performance expression was poor. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and by controlling a music effect to be automatically added or not performed in accordance with a music performance mode, the performance expression power is improved. It is an object of the present invention to provide an enhanced tone signal generator .

[0004]

According to the present invention, there is provided a musical tone signal generating apparatus which generates tone generating instruction information for instructing generation of a musical tone, and generates a tone signal corresponding to the tone generating instruction information. Tone signal generating means for performing a predetermined tone effect on the tone signal generated by the tone signal generating means, and determining whether or not the same tone generation instruction information is provided at intervals within a predetermined time. Judging means, and an effect parameter for controlling an effect given by the effect giving means in response to at least one of the same sounding instruction information given at intervals within the predetermined time in accordance with the judgment of the judging means. And musical tone control means for sequentially changing the tone. As an example, the sounding instruction information generating means also generates touch data indicating a touch intensity together with the sounding instruction information, and the effect applying means generates the same sounding given at an interval within the predetermined time. In response to at least one of the instruction information, an effect parameter for controlling an effect applied by the effect applying means is changed by a change width based on the touch data.

[0005]

[Action] If the sounding instruction information is generated according to a special playing technique that continuously produces the same sound, such as a tremolo playing technique or a drum rolling playing technique, the determining means provides the same sounding instruction information at intervals within a predetermined time. Is determined. In response to this determination, the tone control means sequentially changes the effect parameter for controlling the effect given by the effect giving means in response to at least one of the same sounding instruction information given at intervals within a predetermined time. Let it. The effect given by the effect giving means is controlled according to this effect parameter.
On the other hand, when the sounding instruction information is generated in accordance with the normal playing style, it is not determined that the same sounding instruction information is continuously given at intervals within a predetermined time. Not applied. Therefore, it is possible to perform control for automatically adding or not adding a tone effect in accordance with a tone performance mode, and to sequentially change the effect parameter. Control can be performed (for example, when the pan effect is applied, the sound image localization position is continuously moved in response to continuous hits of the performance operator), and performance expression power can be enhanced. Also, when changing the effect parameters continuously,
By controlling the change width of the effect parameter based on the touch data indicating the strength of the touch, the will of the player can be more reflected in the mode of change of the effect parameter, and the performance expression Power can be increased more.

Next, several embodiments of the present invention will be briefly described. As an example, the sounding instruction information generating means has a plurality of performance operators, and generates the sounding instruction information in response to the operation of the performance operators. In this case, the sounding instruction information is generated in response to the manual performance by the player, and the control for automatically adding the tone effect is performed, so that the control reflecting the intention of the player can be performed. An example of the performance operator may be an operator (for example, a pad operator) for instructing generation of a percussion instrument sound. In this case, for example, when a performance in which the same operation element is rapidly and repeatedly performed such as a rolling playing technique is performed, the above-mentioned automatic tone effect automatic addition control can be performed. Another example of the performance operator may be a key for instructing generation of a scale sound. In this case, for example, when a performance in which the same key is repeatedly struck quickly, such as a tremolo playing method, is performed, the above-mentioned automatic tone effect addition control can be performed. As another example, the apparatus further includes a touch detection unit that detects an operation touch applied to the performance operator, and the musical tone control unit detects the operation touch when the predetermined musical tone effect imparting control is performed. The musical sound effect giving control may be performed in consideration of a touch. In this way, control that reflects the player's will can be further performed.

[0007] As another example, the sounding instruction information generating means may include means for generating automatic performance information, and may generate the sounding instruction information as the automatic performance information. In general, in an automatic accompaniment or an automatic rhythm performance such as an automatic bass chord or an automatic arpeggio, a control for automatically adding or not performing a musical tone effect according to the performance form of the automatic performance sound is performed. Not. Therefore, by applying the present invention to these automatic performance sounds, it is possible to perform automatic addition control of the musical sound effect according to the performance form, and it is possible to enhance the performance expressiveness. As another example, the sounding instruction information generating means may include means for externally inputting a sound signal, and means for generating the sounding instruction information based on the input sound signal. In this way, not only the keyboard but also other appropriate performance operators can be used as the sound input instruction means. For example, a sound played on a guitar can be picked up, and sounding instruction information in a MIDI format or the like can be generated based on the picked-up sound signal. The additional control can be performed, and the performance expression power when the external input sound is played by the electronic musical instrument can be enhanced.

As an example, the tone control means may control a sound image localization movement effect (pan effect) in accordance with the determination result. Then, the sound image localization control according to the performance form can be performed, the sound image localization movement effect giving control that is rich in controllability and reflects the intention of the player can be performed, and the performance expression power can be enhanced. As another example, the tone control means may control the sustain of the volume envelope in accordance with the result of the determination. Then, it is possible to perform the sustain control according to the performance form, and to perform the sustain effect imparting control which is rich in controllability and reflects the intention of the player, thereby enhancing the performance expression power.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. --First Embodiment-- FIG. 1 shows a hardware configuration diagram of an electronic musical instrument according to a first embodiment. In this embodiment, a plurality of pad switches P1 to P
8 is provided, and control for giving a sound image localization movement effect (pan effect) as a predetermined musical sound effect is performed. Various processes and controls are performed by a microcomputer 10 including a CPU 11, a ROM 12, a RAM 13, and the like. The block 14 collectively shows other controls other than the pad switches, and includes a switch for assigning a desired percussion instrument sound to each of the pad switches P1 to P8 and other various switches.

The timer clock generator 15 generates a clock signal for applying a timer interrupt in the program processing by the microcomputer 10. The frequency of the interrupt clock generated by the timer clock generator 15 can be arbitrarily changed by a setting switch provided in the block 14 of the other operator group. As a result, the length of the predetermined time for determining the continuous hit of the pad can be arbitrarily adjusted. The percussion instrument sound source circuit 16 generates a tone signal of a percussion instrument sound assigned to the pad switch in response to the operation of the pad switches P1 to P8. In order to control the sound image localization, the same percussion instrument tone signal is volume-controlled for the sound image localization, is generated on two channels on the left and right sides, and is output from the left and right separate speakers 18R and 18L via the amplifiers 17R and 17L.

FIG. 2 schematically shows an example of a main routine executed by the microcomputer 10. After performing a predetermined initialization process, a pad switch-on event process and other operator processes are performed, and this process is repeated. In the pad switch on event processing, the pad switch P
Processing for detecting the ON events 1 to P8 and processing corresponding to the detection are performed. An example of the pad switch-on event process is shown in FIG. In other manipulator processing,
A process for detecting ON / OFF events of various switches and operators provided in the block 14 of the other operators is performed, and a process corresponding to the detected event is performed. In this process, when the above-described operation for changing the setting of the timer interrupt clock frequency is detected, a process of changing the clock frequency generated by the timer clock generator 15 is performed. FIG. 4 shows an example of the timer interrupt process. The timer interrupt process is executed every time an interrupt clock signal is supplied from the clock generator 15 during execution of the main routine.

In the pad switch on event process of FIG. 3, when the on event of the same pad is given continuously within a predetermined time, the position of the sound image localization is changed to the reference position as shown in the movement pattern A of FIG. A sound image localization movement effect (pan effect) in which control is performed so as to start from PR and sequentially move rightward, and thereafter repeat sequential movement from left to right.
An embodiment is shown in which application control can be performed. In the example of FIG. 5, the sound image localization position has eight levels from 0 to 7, and the leftmost position is indicated by 0 and the rightmost position is indicated by 7. The reference position PR is a sound image localization position unique to the percussion instrument sound assigned to each pad, and is preset to an appropriate value.

In FIG. 3, first, at step 20,
Any pad switch (this is indicated by PAD (n))
n indicates a pad number. ) Is determined. If there is no ON event, the process ends. If there is an on event, go to the next step 21,
The data of the operation touch applied to the pad switch related to the ON event is stored in the touch data register VOLREG corresponding to the pad number n related to the ON event.
(N). As already known,
A touch sensor such as a piezoelectric sensor is incorporated in each of the pad switches P1 to P8, and the output level peak hold value of this piezoelectric sensor at the time of an ON event is stored in the touch data register VOLREG (n).

Next, at step 22, it is checked whether the state flag ST (n) corresponding to the pad number n is "1". This state flag ST (n) is set to 1 in step 27 a little later, and is reset to 0 by the processing of FIG. 4 when a predetermined time has elapsed. If necessary, if the same pad switch is repeatedly struck within a predetermined time, the result of determination that the state flag ST (n) is set to 1 is obtained in step 22; A determination result that the reset has been performed is obtained. When the normal pad operation or the first pad operation of continuous tapping is performed, at the stage of step 22, the state flag ST (n) is still 0, this step 22 is determined to be NO, and the process jumps to step 26.

In step 26, data indicating a preset reference pan position (reference position PR in FIG. 5) unique to the pad switch PAD (n) related to the ON event is stored in a preset pan data register PAN • PR (n). )
Store in Next, data for setting the volume of the right channel is calculated, and the calculated data is used as a pan determination right volume register TG / R corresponding to the pad number n related to the ON event.
(N) and calculates data for setting the volume of the left channel, and calculates this data in the pan determination left volume register TG / L corresponding to the pad number n related to the on-event.
(N). The value of the pan register PAN (n) used for this operation is initially reset to zero.

By adding the value of the pan register PAN (n) and the value of the preset pan data register PAN · PR (n) and dividing by 7, data for setting the volume of the right channel, that is, ｛PAN (n ) + PAN ・ PR (n)｝ / 7 (Equation 1) is obtained and stored in TG ・ R (n). Further, the value of the pan register PAN (n) and the value of the preset pan data register PAN · PR (n) are added, and the result obtained by dividing by 7 is subtracted from 1 to set the volume of the left channel. Data, that is, 1− {PAN (n) + PAN · PR (n)} / 7 (Equation 2) is obtained and stored in TG · L (n).

Registers TG · R (n) and TG · L
The sound volume setting data according to the above formulas 1 and 2 stored in (n) includes eight sound image localization positions 0 to 0 as shown in FIG.
7 shows the relative ratio of the left and right sound volumes in FIG. For example,
In the case of the sound image localization position 0, the ratio of the right volume is 0/7 = 0 and the ratio of the left volume is 7/7 = 1, and the sound image is localized at the leftmost position 0. When the value of the pan register PAN (n) is 0, the volume setting data is determined only by the reference pan position data PAN • PR (n) unique to the percussion instrument sound assigned to the pad. When the pan effect, that is, the movement of the sound image localization position is given, the value of the pan register PAN (n) is 0, 1, 2,.
The volume setting data of the left and right channels calculated in step 26 according to the above equations 1 and 2 change in opposite directions.

In step 27, the state flag ST (n) corresponding to the pad number n is set to 1, and
The timer counter T (n) corresponding to the pad number n is set to 0
Reset to. The timer counter T (n) counts the operation interval of the pad switch corresponding to the pad number n, that is, the time interval between ON events, and is reset every ON event. In the next step 28, the pad number n relating to the current ON event is stored in the pad tone register TG / TONE in the percussion instrument sound source circuit 16.
(N), and touch data register VOLREG
The touch data of (n) is transferred to the touch data register TG / VR corresponding to the pad number n in the percussion instrument sound source circuit 16.
(N). As a result, the percussion instrument sound source circuit 16 starts generating a percussion instrument sound signal assigned to the pad switch related to the current ON event in accordance with the pad number n given to the pad tone register TG / TONE (n). , And the sound volume in the touch data register T
Control is performed in accordance with the touch data stored in G.VR (n), and the touch-controlled percussion sound signal is separated into left and right channels. The percussion sound signal of the right channel is stored in register TG.R (n). The volume control is performed according to the set volume data, and the volume control is performed for the percussion instrument sound signal of the left channel according to the volume setting data stored in the register TG · L (n).

As described above, in the first ON event of continuous pad hitting, steps 20, 21, 22, 26, 27,
The processing is performed in the flow of 28, and the processing in FIG. 3 ends. Next, when an interrupt clock signal is supplied from the clock generator 15, the timer interrupt processing of FIG. 4 is executed. In FIG. 4, first, the pad number n is initialized to 0 (step 30), and the routine of steps 31 to 36 is repeatedly executed eight times, that is, for the number of pads. In step 31, it is checked whether n is 8. If NO, go to step 32, and state flag ST (n) for pad number n
Check if is 1. If the pad switch of the number n is turned on immediately before, as described above, in step 27 of FIG.
YES because T (n) is set to 1;
Go to the next step 33. If the pad switch of the number n is not turned on, ST (n) = 0, and the routine jumps to step 36 to increase the pad number n by one.

In step 33, it is checked whether the count value of the timer counter T (n) of the pad number n is equal to or larger than a predetermined reference value TC. TC is a value indicating a reference time for judging pad continuous hitting. If the same pad switch is continuously turned on within this reference time, it is determined that pad continuous hitting to give the pan effect has been performed. As an example,
This reference value TC is set to a value corresponding to an appropriate time in a range of about 50 ms to 300 ms. If the value of T (n) has not reached the reference value TC, step 33 is NO,
Go to step 35. In step 35, the count value of the timer counter T (n) of the pad number n is increased by one. On the other hand, if the value of T (n) has reached the reference value TC,
Step 33 is YES and the procedure goes to step 34. In step 34, the state flag ST of the pad number n
(N) is reset to 0, and the value of the pan register PAN (n) of the pad number n is reset to 0.

Thereafter, the process goes to step 36, where the pad number n is incremented by one. After step 36, the process returns to step 31 and repeats the processes of steps 31 to 36 for the next pad number n. When the processing of steps 31 to 36 is performed for all pad numbers n, n = 8, and step 3
1 is YES, and this timer interrupt processing ends. Each time the timer interrupt processing of FIG. 4 is performed,
The value of the timer counter T (n) corresponding to each pad increases by one. When the pad switch of the same pad number n is operated twice in succession, the operation time interval is set to the reference value TC.
If the time is longer than the reference time corresponding to, T (n) ≧ TC is satisfied before the on-event of the second shot occurs, and ST (n) and PAN (n) are reset to 0 in step 34 of FIG. You. Therefore, when the second on-event occurs,
Step 22 in FIG. 3 is NO, and the process jumps to step 26. In this case, the pan register PAN (n) is 0, and the pan control is not performed.

When the pad switch of the same pad number n is operated twice in succession, the operation time interval is set to the reference value TC.
If the time is shorter than the reference time corresponding to, T (n) ≧ TC is not established before the on event of the second shot, and the state flag ST (n) remains 1. Therefore, when an on event of the second shot occurs, step 22 in FIG. In step 23, the value of the pan register PAN (n) of the pad number n related to the ON event is incremented by one. Next, at step 24, it is checked whether the volume setting data of the right channel in the register TG.R (n) is 1, that is, 7/7. here,
It is checked whether the sound image localization moved by the pan control has reached the right end. If no, go to step 26,
By performing the operations according to the above equations 1 and 2, each register TG
Left and right volume setting data are stored in R (n) and TG · L (n). In this case, the pan register PA
Since the value of N (n) is increased by 1, the volume setting data of the right channel stored in the register TG · R (n) obtained according to the above equation 1 is increased by 1/7 from the previous time,
The volume setting data of the left channel stored in the register TG · L (n) obtained according to the above equation 2 is 1
/ 7. As a result, the sound image localization is 1 to the right.
It moves by the unit position.

When the same pad switch is repeatedly struck at a time interval shorter than the reference time in this way, in the on-event processing for the second and subsequent strokes, steps 22, 23, and 2 in FIG.
Processing is performed through the flow of Step 4. As a result, the value of the pan register PAN (n) sequentially increases to 0, 1, 2,... Increase or decrease (right: increase, left: decrease). This allows
The sound image localization sequentially moves to the right by one unit position, and the pan effect is realized. Therefore, when the pad switch performs a performance operation that imitates a special playing style that continuously produces the same sound like a drum rolling playing style, that is, the same pad switch is repeatedly struck at a time interval shorter than the reference time. At this time, control for giving the pan effect is performed.

When the sound image localization moved by the pan control reaches the right end, the volume setting data of the right channel stored in the register TG · R (n) becomes 1 = 7/7.
Step 24 in FIG. In step 25, the pan reference position data PAN / P
Set the negative value -PAN.PR (n) of R (n) in the pan register PAN (n). Therefore, the calculation of the above expressions 1 and 2 performed in step 26 performed immediately thereafter is as follows: TG · R (n) ← {−PAN · PR (n) + PAN · PR (n)} / 7 = 0/7 TG · L (N) ← 1-{-PAN-PR (n) + PAN-PR (n)} / 7 = 1-0 / 7 = 7/7, indicating the leftmost sound image localization. That is, when the sound image localization moved by the pan control reaches the right end, the next sound image localization becomes the left end, and the panning of the pattern in which the sound image localization moves from the left end to the right end as shown in a movement pattern A in FIG. 5 is repeated. become.

FIG. 6 shows a modified example of the pad switch-on event process of FIG. 3. In the case where the on-event of the same pad is continuously given within a predetermined time, The position of the sound image localization is shown in FIG.
As shown in the movement pattern B, starting from the reference position PR and sequentially moving to the right, after reaching the right end, sequentially moving from right to left, and after reaching the left end, moving from left to right An example is shown in which panning effect control can be performed so that the movement is controlled so that the movement is repeated while the movement direction is alternately switched. In FIG. 6, steps 20, 2
Steps 1, 22, 26, and 27 are the same as those in FIG. 3, and steps 230, 240, 241, 250, and 251 are changed from steps 23 to 25 in FIG. Further, with the change of the pad switch-on event processing as shown in FIG. 6, step 3 in the timer interrupt processing of FIG.
4 is changed as shown in FIG.

To explain the changes, first, in step 230 of FIG. 6, the value of the pan register PAN (n) of the pad number n related to the ON event is increased by the value stored in the register C. Register C initially contains "+
"1" is stored, and "-1" is stored when the processing of step 250 described below is passed. The value of the register C indicates the direction of increase / decrease of the pan register PAN (n), that is, the direction and amount of pan movement. Next step 2
At 40, it is checked whether the sign of the value stored in the register C is “+” and the volume setting data of the right channel in the register TG · R (n) is 1, that is, 7/7.
Here, it is checked whether the pan movement direction is right and the sound image localization moved by pan control has reached the right end. If NO, go to step 241 and register C
Of the value stored in the register TG.L (n) is 0, that is, 0/7. Here, it is checked whether the moving direction of the pan is to the left and the sound image localization moved by the pan control has reached the left end. If here too NO
Go to step 26.

If step 240 is YES, go to step 250. Here, the value obtained by subtracting the value of the pan reference position data PAN · PR (n) from the numerical value “7” is “7−P
"AN.PR (n)" is set in the pan register PAN (n), and "-1" is set in the register C. Therefore, in the step 26 performed immediately after that,
Is calculated as TG · R (n) ← {7−PAN · PR (n) + PAN · PR (n)} / 7 = 7/7 TG · L (n) ← 1− {7−PAN · PR (n) ) + PAN ・ PR (n)｝ / 7 = 1-7 / 7 = 0/7, and indicates the rightmost sound image localization. That is, when the sound image localization moved rightward by the pan control reaches the right end, the next sound image localization also instructs the right end, and instructs to move leftward from the right end to the left end.

When the sound image localization moved to the left reaches the left end, step 241 becomes YES, and the routine goes to step 251. Here, pan reference position data PAN / PR (n)
The negative value -PAN · PR (n) of the pan register PAN
At the same time as (n), "+1" is set to the register C. Therefore, the calculation of the above expressions 1 and 2 performed in step 26 performed immediately thereafter is as follows: TG · R (n) ← {−PAN · PR (n) + PAN · PR (n)} / 7 = 0/7 TG · L (N) ← 1-{-PAN-PR (n) + PAN-PR (n)} / 7 = 1-0 / 7 = 7/7, indicating the leftmost sound image localization. That is, when the sound image localization moved leftward by the pan control reaches the left end, the next sound image localization also instructs the left end, and instructs to move rightward from the left end to the right end. Thus,
As shown in the movement pattern B in FIG. 5, a pan effect can be provided in which the movement is controlled so as to repeat the movement sequentially while alternately switching the movement direction to the left and right.

In the second embodiment, FIG.
Step 34 in the timer interrupt processing shown in FIG. 7 is changed as shown in FIG. That is, the timer counter T
When the value of (n) reaches the reference value TC, the value of the state flag ST (n) and the value of the pan register PAN (n) are reset to 0, and the value of the register C is set to "+1". As a result, the initial pan movement direction is set to the right.

Third Embodiment FIG. 8 shows a hardware configuration diagram of an electronic musical instrument according to another embodiment of the present invention. In this embodiment, a keyboard 40 having a plurality of keys for instructing generation of a scale tone is provided as a performance operator, and control for giving a sound image localization movement effect (pan effect) as a predetermined musical sound effect is provided. It is supposed to do. As in the previous embodiment, the CPU 41, RO
Microcomputer 4 including M42, RAM43, etc.
The microcomputer 44 performs a sound generation assignment process, a process for providing a sound image localization movement effect, and other various processes. Further, similarly to the above embodiment, the timer clock generator 45 generates a clock signal for timer interrupt. The panel operator group 46 comprehensively shows an operator group for selecting and setting a timbre, a volume, various effects, and the like. Pickup sensor 4
7. The pitch detection and MIDI output generation circuit 48 will be described later.

The keyboard tone signal generating circuit 49 includes a keyboard 40.
A tone signal corresponding to a key corresponding to the key depressed by the key is generated. As is known, tone signals corresponding to different scale tones can be generated in a plurality of tone generation channels. Similarly to the above-described embodiment, in order to control sound image localization, tone signals corresponding to the same pressed key are respectively volume-controlled for sound image localization control, and are generated in two channels, left and right,
Left and right separate speakers 51 through amplifiers 50R and 50L
R, 51L. FIG. 9 shows an example of a musical tone signal generating circuit 49 for a keyboard, particularly showing a portion for generating an envelope waveform signal for musical tone control. The tone generator block 52 receives pitch data, touch data, and pan control data from a bus line 53 of the computer together with information indicating a tone generation channel, and generates a tone signal based on these.

As is known, the generation of the envelope waveform signal divides the envelope waveform from the rise to the end of a sound into a plurality of segments, and performs an operation based on data indicating a target value and a change rate for each segment. This is achieved by: The target value register 54 receives, from the bus line 53 of the computer, data indicating the target value of the segment currently being calculated of the envelope waveform of each musical tone generating channel, and stores the data. Rate register 5
Numeral 5 receives, from the bus line 53 of the computer, the rate data indicating the change rate of the segment currently being calculated of the envelope waveform of each tone generating channel from the bus line 53 of the computer and stores it. The level register and operation circuit unit 56 performs an operation for generating an envelope waveform signal based on the rate data for each tone generation channel, and the current level of the envelope waveform signal for each tone generation channel generated by this operation. A level register for storing a value. The stored current level value of the envelope waveform signal for each tone generation channel is supplied to the tone generator block 52 and to the comparator 57. The comparator 57 compares the current level value of the envelope waveform signal provided for each musical tone generating channel with the target value data supplied from the target value register 54, and switches to the next segment when a match is detected. An instruction signal is supplied to the microcomputer 44 via the bus line 53.

FIG. 10 schematically shows an example of a main routine executed by the microcomputer 44. First, in step 61, the data of the microcomputer 44 and various data in the working RAM 43 are set to predetermined values when the power is turned on, and a predetermined initialization process is executed. In step 62, it is determined whether or not there is a key-on event based on the key scanning output of the keyboard 40. If YES, the process proceeds to step 63 of the next key-on event process,
If NO, the process jumps to step 64.

In step 63, a key-on event process is executed each time a key-on event occurs. An example of this processing is shown in FIG. In step 64, it is determined whether or not there is a key-off event based on the key scanning output of the keyboard 40. If YES, the process proceeds to step 65 of the next key-off event process, and if NO, step 66
Jump to In step 65, a key-off event process is executed each time a key-off event occurs. An example of this is shown in FIG. In step 66, it is determined whether or not a switch for selecting and setting a timbre has been operated in the panel operator group 46, and a timbre change event has occurred.
If an event occurs, step 6 of the next tone setting process
Go to step 7, if no, jump to step 68. In step 67, a tone color setting process according to the tone color change event is performed. In step 68, panel operator group 4
6 to detect the presence or absence of an event of another operator,
If there is an event, a process corresponding to the event is performed in step 69. FIG. 13 shows an example of a timer interrupt process. The timer interrupt process is executed each time an interrupt clock signal is supplied from the clock generator 45 during execution of the main routine.

In the key-on event processing of FIG. 11, when a key-on event of the same key is continuously given within a predetermined time, the position of the sound image localization is started from the reference position KR as shown in FIG. In this embodiment, the sound image localization movement effect (pan effect) imparting control is performed so that the movement is sequentially repeated in a one-way manner from left to right. In the example of FIG. 14, the sound image localization position has five levels from 0 to 4, and the leftmost is indicated by 0 and the rightmost is indicated by 4. In this embodiment, the reference position KR corresponds to the pitch. That is, as shown in the movement pattern H, the localization position of KR = 2, that is, the center localization, is set as the pan start position for the scale notes belonging to the predetermined treble range. As shown in the movement pattern L, the localization position of KR = 0, that is, the leftmost localization, is set as the pan start position for the scale to which it belongs.

The moving pattern H is convenient because, for example, when the same key is hit three times in a tremolo manner, panning as shown in the pattern H1 is performed. That is, when the high range key is hit three times, the localization positions 2, 3, 4
The orientation moves in the order of. If the same key is struck three times in succession by changing the key in tremolo playing method, after all, as shown in the pattern H1, the pan from the center position to the right end is repeated for each scale note of each key struck three times, A pan effect suitable for the feeling of tremolo performance can be provided. Also,
According to the movement pattern L, when the low range key is repeatedly struck, the sound image of the low range sound moves from the left end to the right end, so that a pseudo effect such as moving a plurality of timpani and sounding can be enjoyed.

As a mode frequently used in the tremolo playing technique of a natural musical instrument, there is a playing technique in which the same key is repeatedly repeated three times with respect to the same key in the high frequency range.
Normally, between each of the three strokes, another key on the lower side of the key is entered, so that the time interval between the third strike of the same key and the first strike of the next three strikes is performed. Becomes longer than the predetermined time interval TC. Therefore, even when the same key is repeated three times repeatedly as in the normal tremolo playing method, the pan from the center to the right end is repeated in the order of the localization positions 2, 3, and 4, as shown in the pattern H1 in FIG. Will do it. The same applies to the case where the present invention is applied by picking up an external performance sound of an acoustic guitar or the like by the pickup sensor 47 of FIG. 8 as will be described later, and the key may be replaced with a string as described above.

Referring to FIG. 11, first, at step 70, while appropriately incrementing the variable i from 0 by the number of keys for which a key-on event has been detected, the key code buffer KCBUF (i) corresponding to each value of i is stored in the key code buffer KCBUF (i). Write the key code of the pressed key related to the key-on event, and
Touch data buffer TDBUF corresponding to each value of i
In (i), touch data of a pressed key related to each key-on event is written. In the next step 71, the variable i is reset to an initial value 0. In step 72, the key code buffer KCB corresponding to the value of the currently specified variable i
It is checked whether the same key code as the key code of UF (i) has already been assigned to any sounding channel. In step 73, YES or N according to the search result
Branch to O. If the key code of the buffer KCBUF (i) has been assigned to any sound channel n, step 73 is YES, otherwise step 73 is N
O. Normally, a key-on event occurs when a new key is pressed, so that the same key code as the key code of KCBUF (i) is not already assigned to any sounding channel. It is. Further, even when the key code of KCBUF (i) corresponds to the key code of the first keystroke when the same key is repeatedly struck within a predetermined time, the same key code as that of KCBUF (i) has already been used. Since it is not assigned to such a sound channel, step 73 is NO. If the key code of KCBUF (i) corresponds to the key code after the second keystroke when the same key is repeatedly struck within a predetermined time, the key code of the first keystroke is already assigned to any sounding channel. Since it has been assigned, step 73 branches to YES.

When the key code of the key code buffer KCBUF (i) specified by the variable i is
Continuing the description, assuming that the key code corresponds to the keystroke key, the process goes from NO in step 73 to step 74 to check whether there is an available free channel. In step 75, YES or N according to the result of the search
Branch to O. If there are no free channels, step 7
5 is NO, the process goes to step 76, where the storage of all the key code buffers KCBUF (i) and the touch data buffers TDBUF (i) is cleared, and this key-on event process ends. That is, in this case, the current key-on event is ignored. On the other hand, if there is a vacant channel, step 75 is YES, one of the vacant channels is designated as the newly allocated channel n, and the routine proceeds to step 77.

At step 77, the key code buffer K
Data indicating the pan reference position (KR in FIG. 14) corresponding to the key code range of the CBUF (i) is read from the table, and stored in the key scale pan data register PAN · KR (n) corresponding to the newly assigned channel n. Store. In the next step 78, the key code buffer KCBUF
The key code of (i) is stored in the key code register KC (n) corresponding to the newly allocated channel n, and the signal "1" indicating key-on is stored in the key-on register KON (n) corresponding to the channel n. In the next step 79, data for setting the volume of the right channel is calculated and stored in the pan determination right volume register TG · R (n) corresponding to the newly allocated channel n, and the volume of the left channel is calculated. The data to be set is calculated, and the calculated data is used as a pan determination left volume register TG corresponding to the newly assigned channel n.
Store in L (n). The value of the pan register PAN (n) used for this operation is initially reset to zero.

By adding the value of the pan register PAN (n) and the value of the key scale pan data register PAN · KR (n) and dividing by 4, data for setting the volume of the right channel, that is, ｛PAN ( n) + PAN · KR (n)｝ / 4 (Equation 3) is obtained, and this is stored in TG · R (n). Also, by adding the value of the pan register PAN (n) and the value of the key scale pan data register PAN · KR (n), dividing the result by 4 and subtracting it from 1, the volume of the left channel is set. That is, 1− {PAN (n) + PAN · KR (n)} / 4 (Equation 4) is obtained, and this is stored in TG · L (n).

Registers TG · R (n) and TG · L
The volume setting data stored in (n) according to the above formulas (3) and (4) contains five sound image localization positions 0 as shown in FIG.
6 shows the relative ratio of the left and right sound volumes in No. 4 to No. 4. For example, when the sound image localization position is 0, the ratio of the right volume is 0/4 =
0, the ratio of the left sound volume is 4/4 = 1. Pan register P
When the value of AN (n) is 0, the volume setting data is
It is determined only by the reference pan position data PAN · KR (n) corresponding to the range of the key code. When the pan effect, that is, the movement of the sound image localization position is given, the value of the pan register PAN (n) is set to 0, 1, as in the above embodiment.
The volume setting data of the left and right channels according to the above equations 3 and 4 calculated in step 79 change in opposite directions.

In step 80, the state flag ST (n) corresponding to the newly allocated channel n is set to 1, and the segment number SEG (n) of the envelope waveform corresponding to the channel n is set to the numerical value “ Set to "1". Then, this segment number SE
The envelope target value data and the rate data corresponding to G (n) are sent to the tone signal generation circuit 49 together with the data indicating the assigned channel n. The transmitted envelope target value data and rate data are stored in the target value register 54 and the rate register 55 of FIG. 9, respectively. Further, the key code of the key code register KC (n) and the key-on signal of the key-on register KON (n) are transmitted to the key code register TG · KC (n) and the key-on register corresponding to the channel n in the tone signal generation circuit 49. TG ・ KON
(N), and transfers the touch data in the touch data buffer TDBUF (i) to the tone signal generation circuit 4.
9 to the touch data register TG / TD (n) corresponding to the channel n.

As a result, in the tone signal generation circuit 49,
In the tone generation channel n, the key code register T
The generation of a tone signal having a pitch corresponding to the key code stored in G.KC (n) is started, the generation of an envelope waveform signal is started, and the volume envelope of the generated tone signal is controlled by the envelope waveform signal. At the same time, the volume and the like of the generated tone signal are controlled according to the touch data stored in the touch data registers TG and TD (n), and the generated tone signal is separated into left and right channels. The volume is controlled according to the volume setting data stored in the register TG · R (n), and the tone signal of the left channel is stored in the register TG · L (n).
The volume is controlled in accordance with the volume setting data stored in.
In this step 80, the key code buffer KC
BUF (i) and touch data buffer TDBUF (i)
Clear the data of.

In step 81, it is checked whether or not the content of the key code buffer KCBUF (i + 1) corresponding to i + 1 is 0. If NO, there is a key code of the unprocessed key-on event, so the value of i is increased by 1 in step 82, and the process returns to step 72 to repeat the same processing as described above. If step 81 is YES, there is no unprocessed key-on event key code, so this key-on event process ends, and the process returns to the main routine. As described above, in the first key-on event of the same key continuous tap, step 73 branches to NO and steps 74 to 81
The processing is performed according to the flow.

Next, when an interrupt clock signal is supplied from the clock generator 45, a timer interrupt process shown in FIG. 13 is executed. In FIG. 13, first, the channel number n is initialized to 0 (step 90), and the routine of steps 91 to 99 is repeatedly executed eight times, that is, for the number of sounding channels. In step 91, it is checked whether n is 8. If NO, go to step 92, where the segment number SE of the envelope waveform corresponding to channel n
It is checked whether G (n) is not “1” and the level TG · EVL (n) of the envelope waveform signal of the channel n is smaller than a predetermined minimum value LC. SEG (n) =
When the value is 1 (at the time of an attack) or when the level of the envelope waveform signal is larger than the predetermined minimum value LC, step 92 is NO and the process goes to step 93. Step 9
In step 3, whether the level of the envelope waveform signal of the channel n has reached the target value is monitored based on the output of the comparator 57 (FIG. 9), and if it has reached, the target value data and rate data of the next segment are monitored. The signal is sent to the tone signal generation circuit 49. These are stored in the target value register 54 and the rate register 55 (FIG. 9) as described above.

In step 94, it is checked whether the state flag ST (n) of the channel n is 1. If the key assigned to the channel n has just been turned on immediately before, ST (n) is set to 1 in step 80 of FIG. go to. If the key assigned to the channel n has not been turned on immediately before, ST (n) = 0, and the routine jumps to step 98 to change the channel number n to 1
To increase.

In step 95, it is checked whether the count value of the timer counter T (n) of the channel n is equal to or more than a predetermined reference value TC. TC is a value indicating a reference time for judging continuous tapping of keys. If the same key is repeatedly hit within this reference time, it is judged that a key-pressing performance operation for imparting a pan effect has been performed. If the value of T (n) has not reached the reference value TC, step 95 is NO and the procedure goes to step 97. In step 97, the count value of the timer counter T (n) of the channel n is increased by one. on the other hand,
If the value of T (n) has reached the reference value TC, step 9
5 is YES, and the process goes to step 96. Step 96
Then, the state flag ST (n) of the channel n is set to 0.
And the value of the pan register PAN (n) of the channel n is reset to 0.

Thereafter, the flow proceeds to step 98, where the channel number n is incremented by one. After step 98, step 91
And returns to steps 91 to 91 for the next channel number n.
Step 98 is repeated. When the processes of steps 91 to 98 are performed for all channel numbers n, n = 8, step 91 becomes YES, and the timer interrupt process ends. When the level of the envelope waveform signal of the channel n is smaller than the predetermined minimum value LC, step 92 becomes YES, and the process goes to step 99 to perform the sound generation end processing. In step 99, the contents of the key code register KC (n), the key-on register KON (n), the segment number SEG (n) and the timer counter T (n) of the channel n are reset to 0, respectively. The contents of the channel n of the target value register 54 and the rate register 55 (FIG. 9) are cleared.

Each time the timer interrupt processing shown in FIG. 13 is performed, the timer counter T corresponding to each channel is set.
The value of (n) increases by one. If the same key as the key assigned to channel n is pressed twice or more consecutively and the operation time interval is longer than the reference time corresponding to the reference value TC, the key-on event before the second keystroke occurs. Then, T (n) ≧ TC is satisfied, and ST (n) and PAN (n) are reset to 0 in step 95 of FIG. On the other hand, when the same key is pressed twice or more consecutively, if the operation time interval is shorter than the reference time corresponding to the reference value TC, the key is pressed before the second key-on event occurs.
(N) ≧ TC is not established, and the state flag ST
(N) remains 1.

A description will be given of a process performed when a key-on event corresponding to the second or subsequent keystroke occurs when the same key as the key assigned to the channel n is pressed twice or more times. When a key-on event corresponding to the second or subsequent keystroke of a continuous keystroke occurs, a key code corresponding to that key has already been assigned to any channel n. That is, at the time of occurrence of the key-on event of the first keystroke, any of the channels n
The key code is stored in the key code register KC (n). Therefore, at the time of the key-on event processing corresponding to the second and subsequent keystrokes, step 72 in FIG.
In the example, the key code of the second keystroke stored in the key code buffer KCBUF (i) is assigned to one of the sound channels n.
Is searched for a key code which has already been assigned to step 73, and the flow branches to YES in step 73 to go to step 83.

In step 83, as in step 77, data indicating the pan reference position (KR in FIG. 14) corresponding to the key code range of the key code buffer KCBUF (i) is read from the table, and Corresponding key scale pan data register PAN / KR
(N). In the next step 84, it is checked whether or not the state flag ST (n) is 1. If the operation time interval of the continuous keying is longer than the reference time, T (n) ≧ TC is satisfied before the key-on event of the second keying occurs, and ST (n) and PAN (n) are set in step 95 of FIG. Since it is reset to 0, in the process of FIG. 11 corresponding to the key-on event of the second key press, step 84 branches to NO and goes to steps 79 and 80 to perform the same process as that of the first key press. In this case, since the process of changing the value of the pan register PAN (n) is not performed, the sound image localization does not move.

On the other hand, if the operation time interval between successive key presses is shorter than the reference time, T (n) ≧ TC is not established before the key-on event of the second key press, and the state flag ST
(N) remains 1, and step 84 branches to YES and goes to step 85. In step 85, the value of the pan register PAN (n) for channel n is incremented by one. Next, at step 86, it is checked whether or not the volume setting data of the left channel in the register TG · L (n) is 0, that is, 0/4. Here, it is checked whether the sound image localization moved by the pan control has reached the right end. If NO, the process goes to step 79, and performs calculations in accordance with the above formulas 3 and 4,
Left and right volume setting data are stored in the registers TG · R (n) and TG · L (n). In this case, since the value of the pan register PAN (n) has increased by 1 in step 85,
The right channel volume setting data stored in the register TG · R (n) obtained according to the above equation 3 is 1
TG, which is increased by / 4 and obtained according to the above equation 4.
-The volume setting data of the left channel stored in L (n) is reduced by 1/4 from the previous time. As a result, the sound image localization moves rightward by one unit position.

When the same key is repeatedly struck at a time interval shorter than the reference time in this way, in the on-event processing for the second and subsequent keystrokes, steps 73, 83, 84, and 8 in FIG.
Processing is performed through the flow of 5,86. This allows
The value of the pan register PAN (n) sequentially increases to 0, 1, 2,..., And the volume setting data of the left and right channels calculated in step 79 according to the above equations 3 and 4 is sequentially reduced to 1/4.
Increase or decrease (right: increase, left: decrease). As a result, the sound image localization sequentially moves rightward by one unit position, and the pan effect is realized.

When the sound image localization moved by the pan control reaches the right end, the volume setting data of the right channel stored in the register TG · L (n) becomes 0 = 0/4.
Step 86 of FIG. 11 becomes YES and goes to step 87. In step 87, the pan reference position data PAN
The negative value of KR (n) -PAN.KR (n) is set in the pan register PAN (n). Therefore, the calculation of the above equations 3 and 4 performed at step 79 immediately after that is as follows: TG · R (n) ← {−PAN · PR (n) + PAN · KR (n)} / 4 = 0/4 TG · L (N) ← 1 − {− PAN · PR (n) + PAN · KR (n)} / 4 = 1−0 / 4 = 4/4, indicating the left-most sound image localization. That is, when the sound image localization moved by the pan control reaches the right end, the next sound image localization becomes the left end, and the movement pattern H or L in FIG.
As shown in (1), the panning of the pattern in which the sound image localization moves from the left end to the right end is repeated.

The processing at the time of occurrence of a key-off event will be described with reference to FIG.
While appropriately incrementing the variable i from 0 by the number of keys for which the key-off event is detected, the key codes of the keys related to the respective key-off events are written into the key-off buffers KOFBUF (i) corresponding to the values of i. Next Step 1
In 01, the variable i is reset to the initial value 0. In step 102, it is checked which tone generation channel n the key code of the key-off buffer KOFBUF (i) corresponding to the value of the currently specified variable i is.
In step 103, the segment number SEG (n) corresponding to the searched channel n is set to the final value, so that the envelope waveform is attenuated for erasing sound, and the key-off buffer KOFBUF (i) is cleared. In step 104, it is checked whether the content of the key-off buffer KOFBUF (i + 1) corresponding to i + 1 is 0. If NO, there is a key code of an unprocessed key-off event, so the value of i is increased by 1 in step 105, and the process returns to step 102 to repeat the same processing as described above. If step 104 is YES, there is no unprocessed key-off event, so this key-off event process ends, and the process returns to the main routine.

--Fourth Embodiment-- Next, a description will be given of an embodiment in which the pan effect is controlled in consideration of the intensity of the touch applied to the performance operator. As an example, an example in which this embodiment is realized by partially changing the embodiment shown in FIGS. In this case, the key-on event processing in FIG. 11 is partially changed as shown in FIG. The changed part is that the processing corresponding to steps 85, 86, 79 in FIG. 11 is performed in steps 850, 851, 8 in FIG.
60 and 790, and the other points are the same as those in FIG.

The movement pattern of the pan effect realized by the modification shown in FIG. 15 will be described. When a key-on event of the same key is continuously given within a predetermined time, the position of the sound image localization is changed to the movement pattern shown in FIG. As shown in X, starting from the reference position KR and sequentially moving to the left,
Thereafter, the pan effect applying control is performed so that the one-way sequential movement from right to left is repeated. In the example of FIG. 16, the sound image localization position is 16 from 0 to 15.
The leftmost stage is indicated by a numerical value of 0, and the rightmost is indicated by a numerical value of 15. In this embodiment, the reference position KR is
The pitch corresponding to the pitch, that is, the chromatic tone belonging to the predetermined treble range, as shown in the movement pattern X, KR
= 15, that is, the right end is set as the pan start position. On the other hand, as shown in pattern Y, the KR = 0 localization position, ie, the left end, Start position. Therefore, in this embodiment, the pan control as shown in the movement pattern X is performed only when the generated sound belongs to the predetermined high range, and when the generated sound belongs to the low range, the sound image localization is fixed to the left end and does not move. ing.

The change in FIG. 15 will be described. First, in step 850, the pan change width data D is calculated according to the touch data. In this calculation, the value of the touch data in the touch data buffer TDBUF (i) is quadrupled and the product is multiplied by a predetermined touch data maximum value TDM.
This is performed by dividing by AX and adding the numerical value 0.5 to the quotient. Then, the integer value of the operation result is stored in the register as pan change width data D. The reason for adding the value 0.5 is to round off. The reason for multiplying by 4 is that the value of the touch data in the buffer TDBUF (i) is the maximum value T
This is because the pan change width data D becomes 4 in the case of DMAX. That is, the pan change width data D takes an integer value in the range of 0 to 4 according to the touch data. next,
In step 851, the pan register PA for channel n
The value of N (n) is reduced by the value of the pan change width data D. In the next step 860, the register TG · L (n)
It is checked whether the volume setting data of the left channel is larger than 1, that is, whether the sound image localization has reached the left end. If NO, go to step 790; if YES, go to step 87.

In step 790, data for setting the volume of the left and right channels is calculated according to the following equations 5 and 6, and stored in registers TG.R (n) and TG.L (n). TG · R (n) ← {PAN (n) + PAN · KR (n)} / 15 (Expression 5) TG · L (n) ← 1- {PAN (n) + PAN · KR (n)} / 15 (Equation 4) Thereby, for the sound in the low frequency range, PAN · KR
By (n) = 0, TG · L (n) ≧ 1 is satisfied from the beginning, and the process goes from YES in step 860 to step 87,
Since the value of the pan register PAN (n) is always set to 0, TG · R (n) = 0/15 = 0, TG · L
(N) = 15/15 = 1, and the sound image localization is fixed to the left end.

On the other hand, with regard to sounds in the high range, PA
Since N · KR (n) = 15, TG · R (n) = 1
5/15 = 1, TG · L (n) = 0/15 = 0,
The sound image is localized at the right end. Then, when the same key is continuously pressed within a predetermined time, the pan change width data D is determined according to the touch data at that time (step 850), and the pan register PAN has a value corresponding to the change width data D.
The value of (n) decreases, and in response to this, the sound volume setting data obtained by the above Expressions 5 and 6 changes, and the sound image localization moves. For example, in the second key press, PAN (n) = 0-D, and TG · R
(N) = (15−D) / 15, TG · L (n) = D / 1
The sound image localization moves to the left from the right end by the change width D. Further, when the continuous keying continues, the sound image localization sequentially moves to the left by the pan change width data D corresponding to the touch data at that time. When the sound image localization has reached the left end and the result of step 860 is YES, the value of PAN · KR (n), that is, 15 is set in the pan register PAN (n) in step 87, so that the sound image localization returns to the right end and starts from the right end. The sound image localization movement toward the left end is repeated. Thus, the pan control as shown in the movement pattern X in FIG. 16 is realized.

In the case of the above embodiment, since the moving width of the sound image localization changes depending on the strength of the touch, the expressive power can be further increased. In that case, the relationship between the touch intensity and the movement width of the sound image localization may be set to be non-linear. For example, when performing with a touch of pianissimo, the movement width of the sound image localization is set to 0 so that the movement of the sound image localization does not occur. Alternatively, the sound image localization may be moved in a non-linear movement width. By doing so, the performance expressiveness can be further enhanced. Therefore, the pan change width data D may be determined not only by calculation as in the above example but also by a table or the like.

In the embodiment shown in FIGS. 8 to 16,
The keyboard 40 is used for specifying a chromatic note. However, the present invention is not limited to this. For example, a predetermined percussion sound is assigned to each key of the keyboard 40, such as a keyboard percussion function. This embodiment can also be applied to the case where the tone signal of the assigned percussion instrument sound is generated by the keyboard tone signal generation circuit 49.

In the embodiments shown in FIGS. 8 to 16, the keyboard 40 is used as the sounding instruction information generating means. However, the present invention is not limited to this, and the pickup sensor 47 shown in FIG.
The information generated from the circuit 48 based on the acoustic signal picked up in step (1) may be used as sound generation instruction information equivalent to a key code. In this case, the above embodiment can be applied in its entirety. That is, an arbitrary acoustic signal such as a natural musical instrument sound such as an acoustic guitar or a human voice is picked up from the outside by the pickup sensor 47, and the pitch is detected by the pitch detection and MIDI output generation circuit 48, and the touch and the like are also appropriately detected. Frequency data or pitch data indicating pitch, touch data, key-on /
The off data and the like are output in a MIDI standard data form. The microcomputer 44 treats external sound input data of the MIDI standard given from the circuit 48 as data equivalent to sounding instruction information such as a key-on event, and performs musical sound effect imparting control according to the present invention equivalent to the above embodiment. By doing so, for example, when the tremolo is played with the acoustic guitar, the movement of the sound image localization can be obtained. In this case, the tone effect imparting control according to the present invention is performed in accordance with the output of the keyboard 40 or the circuit 48.
The selection as to whether or not to perform in accordance with external sound input data may be made as appropriate. For this purpose, such a selection switch may be provided on the panel operator group 46, or a connection detecting means is provided on a connector 58 for connecting the output line of the circuit 48 to the bus of the computer 44,
When the output line of the circuit 48 is connected to the connector 58, the tone effect imparting control according to the present invention may be preferentially selected so as to be performed in accordance with external sound input data from the circuit 48.

In the third and fourth embodiments, the key scale characteristic according to the pitch (tone range) of the pan reference position (KR) is 0 or 4 according to the two pitch ranges as in the above-described example. Alternatively, the characteristic is not limited to 0 or 15, but may be any characteristic in both the way of setting the sound range and the value. Further, the key scale characteristic of the pan reference position (KR) may be changed by an appropriate operator. The first
In the fourth to fourth embodiments, the pan movement characteristics or movement patterns are not limited to those shown in these embodiments, but may be set in any manner. Further, the movement pattern may be changed according to an appropriate factor such as a touch size. Further, in the first to fourth embodiments, the pan control is performed using the left and right two channels. The present invention is not limited to this, and more pan control channels (speakers) are used.
May be provided. Further, when a large number of pan control channels (speakers) are provided, the sound image localization can be performed simply by sequentially turning on / off the volume of each pan control channel (speaker) without performing multi-level control of the volume level. That's fine, because you get a move.

The sounding instruction information is not limited to operation information from performance operators such as keys and pads, and performance information automatically generated by an automatic performance information generator may be used.
Then, the automatic tone control according to the present invention can be automatically applied to the automatic performance sound. Further, when it is determined that the same sounding instruction information is continuously given within a predetermined time, in the above-described embodiment, the predetermined tone effect applying control is performed on the second and subsequent sounds. However, the present invention is not limited to this, and the predetermined tone effect imparting control may be performed in response to at least one of the sounds, whereby a different performance effect can be obtained.

The tone effect provided according to the present invention is not limited to the sound image localization movement (pan) effect as described above, but may be any effect. For example, a tone effect that variably controls envelope setting parameters such as a time length or a change rate such as sustain, decay, or release of the envelope waveform may be provided. In this case, the present invention can be implemented according to the first to fourth embodiments. For example, like the registers TG-R (n) and TG-L (n) for storing the volume control data for pan control, one register whose stored value is controlled in accordance with a continuous operation mode of a key or the like is provided. In this case, the envelope setting parameters such as the sustain rate may be variably controlled according to the value of this register. Thereby, for example, for a sound played quickly with an ornamental sound, the interval between the ornamental sound and the subsequent sound is shortened, so that the sustain of the sound is made longer (or shorter) than other sounds. ) Is automatically given, and the performance expression power can be enhanced. The present invention is not limited to the control of the envelope setting parameters, and a tone effect for variably controlling the depth and time of the reverb effect, the modulation effect, and the like may be provided according to the present invention.

[0068]

As described above, according to the present invention, when the same sounding instruction information is continuously given within a predetermined time, the sounding instruction is responded to at least one of the sounding instruction information. Since a predetermined tone effect imparting control is performed on a tone signal generated corresponding to the information, a difference in tone performance form is automatically determined, and the tone effect is automatically added. Can be performed, and the effect parameters are sequentially changed, so that the effect control that changes sequentially can be performed. The sound image localization position is continuously moved),
It has an excellent effect that the performance expressiveness can be enhanced. Further, when the effect parameter is continuously changed, the change width of the effect parameter is controlled based on touch data indicating the strength of the touch, so that the performer's will can be changed in a manner of changing the effect parameter. Can be reflected more, and the performance expressiveness can be further enhanced.

[Brief description of the drawings]

One embodiment of FIG. 1 musical tone signal generating apparatus according to the present invention
FIG. 2 is a hardware configuration diagram of the electronic musical instrument according to the first embodiment.

FIG. 2 is a flowchart schematically illustrating an example of a main routine executed by the microcomputer in FIG. 1;

FIG. 3 is a flowchart illustrating an example of a pad switch-on event process in FIG. 2;

FIG. 4 is a flowchart illustrating an example of a timer interrupt process.

FIG. 5 is a view showing an example of a sound image localization movement pattern realized by the embodiment.

FIG. 6 is a flowchart illustrating a modified example of the pad switch-on event process of FIG. 3;

FIG. 7 is a diagram extracting and showing a changed part in the timer interrupt processing of FIG. 4;

[8] Another embodiment of the musical tone signal generating apparatus according to the present invention
FIG. 2 is a hardware configuration diagram of an electronic musical instrument according to an example.

FIG. 9 is a block diagram showing an example of a musical tone signal generating circuit for a keyboard shown in FIG. 8;

FIG. 10 is a flowchart schematically illustrating an example of a main routine executed by the microcomputer in FIG. 8;

FIG. 11 is a flowchart illustrating an example of a key-on event process in FIG. 10;

FIG. 12 is a flowchart illustrating an example of a key-off event process in FIG. 10;

FIG. 13 is a flowchart illustrating an example of a timer interrupt process.

FIG. 14 is a diagram showing an example of a sound image localization movement pattern realized by another embodiment.

FIG. 15 is a flowchart showing a modified example of the key-on event process of FIG. 11;

FIG. 16 is a diagram showing an example of a sound image localization movement pattern realized according to the modification of FIG. 15;

[Explanation of symbols]

P1 to P8: pad switches. 10,44 ... microcomputer. 16 percussion sound source circuit. 17R, 17L,
50R, 50L ... amplifier, 18R, 18L, 51R, 5
1L ... speaker. 40 ... keyboard. 49 ... keyboard tone signal generation circuit.

Claims (2)

(57) [Claims] 1. A sound signal generating means for generating sounding instruction information for instructing generation of a musical sound, a sound signal generating means for generating a musical sound signal in response to the sounding instruction information, and a sound signal generating means for generating the sound signal. Effect applying means for applying a predetermined musical sound effect to the generated tone signal; determining means for determining whether the same sounding instruction information is provided at intervals within a predetermined time; and determining the predetermined time according to the determination by the determining means. Tone signal control means for sequentially changing an effect parameter for controlling an effect given by the effect giving means in response to at least one of the same sounding instruction information given at intervals within apparatus. 2. The sound generation instruction information generating means also generates touch data indicating the intensity of a touch together with the sound generation instruction information, and the effect imparting means generates the same sound given at intervals within the predetermined time. At least one of the pronunciation instruction information of
In response to the above, with the variation width based on the touch data,
The tone signal generator according to claim 1, wherein an effect parameter for controlling an effect applied by the effect applying means is changed.