JP3252177B2 - Electronic musical instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument, and more particularly, to an electronic musical instrument capable of varying an effect of attenuating generated musical sounds.

[0002]

2. Description of the Related Art Conventionally, an acoustic piano has a keyboard having a plurality of keys for striking strings.
A damper pedal, a sostenuto pedal, and a soft pedal are provided, and a damper that operates in response to depression of these pedals, and that is separated from and connected to the strings and that changes the distance from the strings is provided for each string.

In such an acoustic piano, normally, a damper is in contact with a string, and when a key is pressed, the damper separates from the string, and thereafter, a hammer corresponding to the pressed key is formed. Hit the corresponding string. Therefore, when the key is depressed, the string vibrates and sounds as shown in FIG. 11, and the level of the musical tone increases at a large increasing rate (the rate of change is set to rate = a), and thereafter, as it is. When the key-depressed state is continued, the damper maintains the state apart from the string, and attenuates at the string's original attenuation rate (which is assumed to be rate = b) which is not hindered by the damper. Then, when the key is released, the damper contacts the string at the same time as the key is released, and the vibration of the string is prevented by the damper, and the generated musical tone has a higher attenuation rate (this is assumed to be rate = c).
To attenuate and mute. FIG. 11 simply shows a change in the volume of the piano.

In such a basic operation, when the damper pedal is depressed, all the dampers provided for the respective strings are separated from the strings and maintain the state while being depressed. Therefore, as shown in FIG. 12, if the damper pedal is depressed before the key is released or the key is depressed while the damper pedal is depressed, the damper pedal is released even immediately after the key is depressed. As long as the step is depressed, the damper can be kept away from the strings, and can have the same long-decay time musical tone characteristic as the state in which the key-pressing state is continued. Further, if the damper pedal is depressed while a musical tone is being generated after the key is released, the damper separates from the string, and the musical tone being sounded changes from a large attenuation rate to a smaller attenuation rate and attenuates.

When the sostenuto pedal is depressed, only the damper which is away from the string when the sostenuto pedal is depressed is maintained at a distance from the string while the sostenuto pedal is depressed. Therefore, as shown in FIG. 13, if the sostenuto pedal is depressed immediately after the key is depressed, the damper is released from the string by depressing the key, and the sostenuto pedal is depressed at this time. To stay away from
The tone is attenuated at the same small attenuation rate as the state in which the key-depressed state is continued, and a tone characteristic having a long decay time can be obtained. Also, as shown in FIG. 13, if the sostenuto pedal is depressed while the key is released and the sound is still sounding, or if the key is depressed after depressing the sostenuto pedal, the sostenuto pedal does not work, and the musical tone depresses the sostenuto pedal. It attenuates at the same large attenuation rate as when it is not present.

Further, as shown in FIG. 14, when the sostenuto pedal is depressed while the damper pedal is depressed, all the dampers are separated from the strings due to the depression of the damper pedal. However, as long as the sostenuto pedal is depressed, all dampers can be kept away from the strings, and musical tones can be produced with a small attenuation rate.

When the soft pedal is depressed,
The distance between the string and the hammer is uniformly approached, and the stroke of the hammer at the time of striking is set short. Therefore, when a key is depressed after depressing the soft pedal, a musical tone with soft sound quality can be generated.

Conventionally, there is an electronic musical instrument such as an electronic piano that performs the same operation as that of such an acoustic. Such an electronic musical instrument is also provided with a damper pedal, a sostenuto pedal, and a soft pedal in addition to a keyboard having a plurality of keys. When the same operation is performed on these keys and each pedal, an acoustic piano Can be generated.

[0009]

However, in such a conventional electronic musical instrument, only the damper pedal and the sostenuto pedal are used to change the attenuation rate of the generated musical sound. As shown in FIG. 15, it is impossible to perform a variety of performances because it is impossible to perform a variety of performances by generating short musical tones while continuously generating musical tones greater than the number of fingers that can be used for performance. there were.

That is, to play the notes shown in FIG. 15, these notes are played as short notes by playing three notes with the right hand while continuously playing nine notes with the left hand. Need to be done. However, such a performance cannot be performed exactly according to the notes, even if the above-mentioned damper pedal or sostenuto pedal is used alone or in combination with these pedals. For example, if nine notes are played by using the damper pedal and the damper pedal is continuously depressed when playing three notes in order to keep generating this tone, the tone of the three notes is also a long tone. Is generated as
Also, to play nine notes using the sostenuto pedal, it is necessary to play nine notes at a time with the left hand, but it is not possible to play nine notes at a time with the left hand. A note occurs in which the function does not work, and the performance cannot be performed exactly as the note. Further, as shown in FIG. 14, when the damper pedal is combined with the sostenuto pedal and the sostenuto pedal is depressed and the nine notes are played by pressing the sostenuto pedal, all the dampers are separated from the strings.
The musical tone of three notes is also generated as a long musical tone. Therefore, conventionally, when the performance as shown in FIG. 15 is necessary, the performance is dealt with by a pseudo tone, for example, by depressing the damper pedal halfway and performing the performance. As described above, only the damper pedal and the sostenuto pedal cannot perform the musical note shown in FIG. 15 accurately, and there is a problem that various performances cannot be performed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electronic musical instrument capable of performing various performances easily and easily by changing the attenuation rate of a musical tone being generated in various ways.

[0012]

An electronic musical instrument according to the present invention has a keyboard having a plurality of keys, a musical sound generating means for generating a musical sound in response to a key depression operation by the keys, and an on state and an off state. Operating means for obtaining, and when the operating means is in the off state, the level of the musical tone generated by the musical tone generating means is attenuated at a predetermined decay rate after key release, and the key is already released when the operating means is turned on. The level of the tone being attenuated is attenuated at an attenuation rate smaller than the predetermined attenuation rate, and the tone generated by the tone generation means when a key is pressed when the operating means is in the ON state has its level reduced. The above object is attained by providing control means for attenuating at the predetermined attenuation rate.

Further, the electronic musical instrument of the present invention further comprises a damper pedal capable of being in an on state and an off state, and the control means controls the tone generated by the tone generating means when the damper pedal is on. The above object is achieved by attenuating the level with an attenuation rate smaller than the predetermined attenuation rate and giving priority to the attenuation rate by the damper pedal over the attenuation rate by the operation means.

In this case, the control means may change the attenuation rate according to the operation amount of the operation means, for example, as set forth in claim 3. The damping rate may be changed according to the operation amount of the damper pedal.

[0015]

According to the present invention, when a key is depressed, the tone generating means generates a tone corresponding to the key depressed, and sets the decay rate of the tone generated by the key depression to the ON state. Depending on the operation state of the operation means that can take the and off state,
The control means controls. That is, when the operating means is in the off state, the control means attenuates the level of the musical tone generated by the musical tone generating means at a predetermined attenuation rate after the key is released, and when the operating means is turned on, the key is already released and attenuated. When there is a middle tone, the level of the tone is attenuated at an attenuation rate smaller than the predetermined attenuation rate. Further, the control means attenuates the level of the musical tone generated by the musical tone generating means by depressing the key when the operating means is in the ON state at the predetermined attenuation rate.

Therefore, when a musical tone continues to be generated and a new short musical tone is to be played, all the keys of the notes having the long decay time are depressed, and then the operating means is turned on. If you perform an operation such as pressing a key of a short note, the musical tone of a note with a long decay time will be
The musical tone of a note with a short decay time played after being attenuated by the control means with a smaller decay rate is attenuated with a large decay rate (the predetermined decay rate). As a result, for example, the musical notes shown in FIG. 15 can be accurately played, and at the same time, can be played easily and easily, so that a wider variety of performances can be performed.

When the damper pedal which can be turned on and off is turned on, the control means attenuates the level of the tone generated by the tone generating means at an attenuation rate smaller than the predetermined attenuation rate. In addition, if the damping rate of the damper pedal is prioritized over the damping rate of the operating means, a wider variety of performances can be performed by combining the operation of the damper pedal and the operating means.

Further, when the control means changes the attenuation rate in accordance with the operation amount of the operation means or the operation amount of the damper pedal, more diverse performances can be performed.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electronic musical instrument according to the present invention will be specifically described based on embodiments.

FIGS. 1 to 10 show an embodiment of an electronic musical instrument.

FIG. 1 is a block diagram of a piano-type electronic musical instrument 1. The electronic musical instrument 1 has a control unit 2, a ROM (Read
Only Memory) 3, keyboard 4, operation unit 5, new pedal 6, damper pedal 7, sound source 8, sound system 9
Etc. are provided.

The ROM 3 stores a basic control program as the electronic musical instrument 1, a musical sound attenuation processing program, various system data, and the like.

The keyboard unit 4 has N keys, and the player specifies a pitch or a velocity (keystrength) by depressing a key on the keyboard unit 4. do it,
Perform a performance operation.

The operation unit 5 includes a power switch of the electronic musical instrument 1 and various switches for operating the electronic musical instrument 1 (for example,
A control unit 2 scans the operation unit 5 and performs a performance process according to the switch state.

The control unit 2 has a CPU (Central Processing).
Unit), a RAM (Random Access Memory), and the like, and performs a performance process using the RAM as a work memory according to a program in the ROM 3. That is,
A tone at a pitch designated by a key operation of the keyboard unit 4 is output to the tone generator unit 8 at a volume corresponding to the key operation and a tone color data designated by a tone switch of the operation unit 5. In this performance processing, when there is no pedal operation, when a key is depressed as shown in FIG. 11, the control unit 2 generates a musical tone of the corresponding key and, while the key is being depressed, as shown in FIG. , A predetermined small decay rate (rate =
The signal is attenuated in b) and output to the sound source unit 8. When the key is released, the signal is attenuated at a predetermined attenuation rate (rate = c) larger than the predetermined small attenuation rate and output to the sound source unit 8. Further, the control unit 2 changes the attenuation rate of the musical tone in accordance with the operation of the new pedal 6 and the damper pedal 7 described later, outputs the musical tone to the sound source unit 8, and controls the attenuation rate of the generated musical tone.

The new pedal 6 is a pedal newly provided in the present invention, and takes on and off states when a stepping operation is performed, and outputs a signal corresponding to the state to the control unit 2.

The control unit 2 scans the new pedal 6, and when the new pedal 6 is in the off state, as described above, releases the level of the musical tone output to the sound source unit 8 and releases the predetermined large attenuation rate (rate). = C) and attenuated and output to the sound source unit 8. As shown in FIG. 2, the tone which has already been released and attenuated when the new pedal 6 is turned on has its level reduced by the predetermined large attenuation. The signal is attenuated at an attenuation rate (rate = b) smaller than the rate (rate = c) and output to the sound source unit 8. Further, as shown in FIG. 2, when the new pedal 6 is turned on while the key is being pressed, the control unit 2 has already released the key when the depressing operation is performed, but it is producing sound. And all the tones that are being attenuated are attenuated at the small attenuation rate (rate = b) and output to the tone generator 8.
On the other hand, all of the tones released when the new pedal 6 is on are attenuated at a large attenuation rate (rate = c) and output to the tone generator 8.

If the function of the new pedal 6 is compared to that of an acoustic piano, first, when the new pedal 6 is depressed, the dampers are separated from all the strings. Therefore, the tone during key depression maintains the attenuation rate as it is, and the tone that still has a sound immediately after the key is released is attenuated again at a small attenuation rate because the damper is separated. On the other hand, when the new pedal 6 is depressed, the damper comes into contact again with any string that has been released. Therefore, all the tones having a key release are attenuated at a large attenuation rate. Musical notes that have already been released before the pedal is depressed maintain a large decay rate.

When the stepping operation is performed, the damper pedal 7 takes an ON state and an OFF state, and outputs a signal corresponding to the state to the control unit 2.

The control unit 2 scans the damper pedal 7,
When the damper pedal 7 is in the off state, as described above, the level of the musical tone output to the sound source section 8 is attenuated at the above-mentioned predetermined large attenuation rate (rate = c) after key release, and output to the sound source section 8, When the pedal 7 is in the ON state, the levels of all musical tones output to the sound source unit 8 are attenuated at the attenuation ratio (rate = b) smaller than the predetermined large attenuation ratio (rate = c) and output to the sound source unit 8. In addition, as shown in FIG. 3, when the damper pedal 7 is in the on state, even when the new pedal 6 is turned on, the damping rate by the damper pedal 7 is prioritized over the damping rate by the new pedal 6 to attenuate. The generated musical sound is output to the sound source unit 8. That is, when the damper pedal 7 is in the ON state, all the tones to be generated are attenuated at a small attenuation rate (rate = b) regardless of the operation of the new pedal 6.

The tone generator 8 generates a tone based on the tone data input from the controller 2 and outputs the tone to the sound system 9.

The sound system 9 includes a D / A converter, an amplifier, a speaker, and the like, and emits a tone input from the sound source unit 8 to the outside.

Next, the operation will be described.

By operating the new pedal 6 alone or by operating the new pedal 6 and the damper pedal 7 in combination, the electronic musical instrument 1 can easily perform a performance that could not be played as a note in the past. You can play.

That is, when the power of the electronic musical instrument 1 is turned on, the control unit 2 first performs an initialization process (step S1) as shown in a flowchart of the main process in FIG.
0), a damper pedal (described as D pedal for simplicity in the figure) processing (step S20), a new pedal (described as N pedal in the figure) processing (step S30), and a key processing (step S40) are sequentially performed. A process of instructing the tone generator 8 to generate a musical tone in accordance with the key operation state of the keyboard unit 4 and the operation states of the new pedal 6 and the damper pedal 7 is performed.

Hereinafter, each of the above processes will be described in detail.

First, the initialization process will be described with reference to the flowchart shown in FIG.

In the initialization processing, initialization processing of each register is performed.

That is, in the initialization processing, as shown in FIG. 5, first, "0" indicating the off state is set in the register DPF for storing the on / off state of the damper pedal 7 (step S11), and the new pedal is set. "0" indicating the off state is set in the register NPF for storing the on / off state of No. 6 (step S12). Next, registers D1F to DNF for storing attenuation rates of musical tones corresponding to the respective keys of the keyboard section 4.
(Each one corresponds to each key) is set to "1" (step S13), and "0" indicating the OFF state is stored in the registers K1F to KNF for storing the ON / OFF state of each key (step S14). ). Here, "1" is set in the registers D1F to DNF.
Is stored, the larger decay rate (rate = c) is selected and the register D1F
When "0" is stored in .about.DNF, the smaller attenuation rate (rate = b) is selected. Then, "0" is set in the register ENV for storing the volume of the musical sound to be generated, and the initialization processing is terminated (step S15).

Next, the damper pedal processing will be described with reference to the flowchart shown in FIG.

In the damper pedal process, data is set in the registers D1F to DNF in accordance with the operation of the damper pedal 7.

That is, in the damper pedal processing, first, the damper pedal 7 is scanned to check whether the damper pedal 7 has been turned on (changed from the off state to the on state) (step S21). Is turned on, the register DPF is set to "1" to set the damper pedal 7 to the ON state, and the registers D1F to DNF are set to "0" (steps S22 and S23). That is, the damper pedal 7
Is turned on, "0" is set in all the registers D1F to DNF so that a small attenuation rate (rate = b) is selected for musical tones corresponding to all keys. If it is determined in step S21 that the damper pedal 7 has not been turned on, the process proceeds to step S2.
Move to 4.

In step S24, it is checked whether or not the damper pedal 7 has been turned off (changed from the on state to the off state).
The damper pedal process ends as it is. Here, when the damper pedal 7 is turned off, the register DPF is set to "0", and the off state of the damper pedal 7 is set (step S25). It is checked whether the pedal 6 is on (step S26). When the register NPF is "0", it is determined that the new pedal 6 is not in the ON state, and other keys except the register DnF corresponding to the key whose register KnF is "1", that is, the key being depressed, are determined. "1" is set in the registers D1F to DNF (step S27). Also, in step S26, the register NP
When F is "1", it is determined that the new pedal 6 has been turned on, and the damper pedal process ends as it is. Therefore, when the damper pedal 7 is turned off, "0" is set in the register DnF corresponding to the key being depressed so that a small attenuation rate (rate = b) is selected. Is set so that a large attenuation rate (rate = c) is selected. When the damper pedal 7 is turned off and the new pedal 6 is on, the process of setting the registers D1F to DNF to "1" is not performed, and the state of a small attenuation rate is maintained.

Next, the new pedal process will be described with reference to the flowchart shown in FIG.

In this new pedal process, data is set in the registers D1F to DNF in accordance with the operation of the new pedal 6.

That is, in the new pedal processing, first,
The new pedal 6 is scanned to check whether the new pedal 6 has been turned on (changed from the off state to the on state) (step S31). When the new pedal 6 has been turned on, "1" is set in the register NPF. Is set (step S32), and it is checked whether or not the register DPF is "1" (that is, whether or not the damper pedal 7 is on) (step S33). Step S33
When the register DPF is "0", the damper pedal 7 is off, so that "0" indicating a small attenuation rate (rate = b) is set in all the registers D1F to DNF (step S34), and step S35 is performed. Proceed to. In step S33, when the register DPF is "1", the registers D1F to DN have already been processed by the damper pedal processing shown in FIG.
Since "0" is set in F, the process directly proceeds to step S35. If it is determined in step S31 that the new pedal 6 has not been turned on, the process directly proceeds to step S35.

Next, it is checked whether or not the new pedal 6 has been turned off (changed from the on state to the off state) (step S35). In step S35, if the new pedal 6 is not turned off, the new pedal process is terminated as it is, and if the new pedal 6 is turned off, the register NPF is set to "0" indicating that the new pedal 6 is off. (Step S3
6) Check whether the register DPF is “0” (ie, whether the damper pedal 7 is in the off state) (step S37). When the register DPF is "0", since the damper pedal 7 is not operated, all the other registers except the key corresponding to the register KnF = 1, that is, the register DnF corresponding to the key being depressed, are set. D1F to DNF are set to "1" indicating a large attenuation rate (rate = c) (step S38), and the new pedal process ends. If the register DPF is not "0" at step S37, the damper pedal 7 is in the ON state, and therefore "1" is set to the registers D1F to DNF.
The new pedal process is terminated as it is without performing the setting.

That is, when the new pedal 6 is turned off and the damper pedal 7 is on, the damper pedal 7 has priority. Therefore, the new pedal processing is terminated, and when the damper pedal 7 is off, The registers D1F to DNF other than the register DnF corresponding to the key being pressed are set to "1", and the attenuation rate of the musical tone is set to a large attenuation rate (rate = c).

When the new pedal process is completed, a key process shown in FIG. 8 is performed.

In the key processing, first, the keyboard section 4 is scanned,
It is checked whether or not there is a key that has been depressed (changed from key off to key on) (step S41). If there is no key that has been depressed, the process proceeds to step S46.

In step S41, when there is a key that has been depressed, "1" indicating that the key is being depressed is stored in the register KnF corresponding to the depressed key (the n-th key).
Is set to "0" in the corresponding register DnF (steps S42 and S43), and the tone data of the corresponding key is output to the tone generator 8 to instruct the start of sound generation and the start of envelope control processing. (Step S4
4, S45). This envelope control processing will be described later.

When the start of the envelope control process is instructed, the keyboard unit 4 is scanned next to check whether or not the key is released (change from key on to key off) (step S).
46) If the key is not released, the key processing is terminated as it is. When the key is released in step S46, the register KnF corresponding to the released key is set to "0" (step S47), and the register DPF is checked (step S48). When the register DPF is "0", since the damper pedal 7 is not turned on, the register DnF corresponding to the released key is set to "1", and the register DnF corresponding to the released key is set. As the attenuation rate, a large attenuation rate (rate = c) is selected (step S49). When the register DPF is "1" in step S48, the damper pedal 7 is in the ON state, and thus the key processing is terminated without setting the attenuation rate to a large attenuation rate (rate = c). Therefore, when the damper pedal 7 is in the off state and the new pedal 6 is in the on state, all of the musical sounds for which key release has been performed are attenuated at a large attenuation rate (rate = c).

The above-described envelope control processing is performed for each musical tone for which sound generation is started, and is processed as shown in FIG. Further, once this envelope control process is started, the process of FIG. 9 is performed at predetermined timings independently of the process timing shown in FIG.

That is, as shown in FIG. 11, the tone of a musical tone whose key has been pressed and whose sound has started is basically increased in rate = a by the key being pressed, as shown in FIG.
After reaching a certain level, until the key is released, the signal attenuates at a small attenuation rate of rate = b. After that, when the key is released, if the new pedal 6 and the damper pedal 7 are not operated, they are attenuated at a large attenuation rate (rate = c). , The decay rate after key release is small (rate = b) and large decay rate (rate = b).
c) is selected and attenuated.

Therefore, in the envelope control process, as shown in FIG. 9, first, a process of increasing the volume level is performed. "100" is set in a register PENV for storing the target value of the volume level (step E1), and a preset rate of increase "a" is set in a register rate for storing the rate of change in the size of the musical tone to be generated (step E1). Step E2).
Then, a register ENV for storing the current volume level
, The added value (ENV + rate) obtained by adding the value of the register rate to the value of the register ENV is stored as a new volume level (step E3), and the stored value of the register ENV is used as the volume level of the musical tone as the tone generator section. 8 to generate a sound (step E4).

Thereafter, in order to increase the volume of the musical tone by a every predetermined time, a wait process (WAIT) for providing a predetermined waiting time is performed (step E5), and then the value of the register ENV is changed to the value of the register PENV. It is checked whether or not the volume level has reached the target volume level depending on whether or not they match (step E6). If not, the processing from step E3 is performed again.

In step E6, when the volume level reaches the target volume level, it is determined that the tone being produced has reached the target volume, and the process then proceeds to the process of attenuating the volume level. That is, "0" is set as a target value in the register PENV (step E7), and the register D
It is checked whether nF is "1" (step E8).
When the register DnF is "1", the register rate
Is set to a large attenuation rate (negative value) (step E9), and when the register DnF is not "1", "b" is set to the register rate (step E10). Then, a value obtained by adding the value of the register ENV and the value of the register rate to the register ENV is stored (step E11), and the stored value of the register ENV is output to the tone generator 8 as the volume level of the musical tone (step E11). Step E12).

Thereafter, the register ENV is set to the register PEN.
V, that is, whether the envelope value has reached the target value (step E1).
3) If the target value has not been reached, wait processing (WAIT) is performed, and the process returns to step E8 (step E14). Then, when the ENV and the PENV match, that is, when the musical sound is muted, the envelope control processing is terminated.

During the decay of the musical tone, the register DnF
Changes from "1" to "0", the register rate is switched from "c" to "b" and set (step E).
8, E10), the value of this register r is added to the value of the register PENV.
ate is added to the register ENV (step E11), and the stored value of the register ENV is stored in the register ENV.
The tone level is output to the tone generator 8 (step E12).

Further, during the decay of the tone, the register Dn
When F changes from “0” to “1”, the register rat
e is switched from "b" to "c" and set (steps E8 and E9), and the tone is generated while attenuating at the large attenuation rate after this switching. (Steps E11 to E12).

In the envelope control process, when a plurality of musical tones are being generated, a plurality of the same processes are performed independently for each musical tone.

As described above, when the register DnF corresponding to the released key tone is "1", it is determined that neither the new pedal 6 nor the damper pedal 7 is in the ON state, and a large attenuation rate (rate = c) is obtained. Attenuate the musical tone, register D
When nF is "0", it is determined that the key is being depressed, the damper pedal 7 is on, or the new pedal 6 is turned on after the key is released, and the current ON state is maintained. Attenuation is performed at an attenuation rate (rate = b). When the damper pedal 7 or the new pedal 6 is turned off during the decay of the musical tone, the tone of the released key is switched from a small decay rate (rate = b) to a large decay rate (rate = c). The tone is generated while attenuating.

When the key is depressed in this way, a tone corresponding to the key that has been depressed is generated, and the attenuation rate of the tone generated by the key depression is determined by the key depression / key release state and the new pedal 6. And the control unit 2 according to the operating state of the damper pedal 7
Can be controlled by

That is, when the new pedal 6 and the damper pedal 7 are in the off state, the control section 2 sets the level of the generated musical tone to a predetermined large attenuation rate (rate =
If the tone is already released and the tone is attenuating when the new pedal 6 is turned on, the level of the tone is reduced to the predetermined large attenuation rate (rate = c).
Attenuation is performed at a smaller attenuation rate (rate = b). Further, the control unit 2 attenuates the level of the generated musical tone released when the new pedal 6 is in the ON state at the predetermined large attenuation rate (rate = c).

When the damper pedal 7 is on, the control unit 2 gives priority to the damper pedal 7 and attenuates the musical sound at a small attenuation rate (rate = b) regardless of the state of the new pedal 6. . Therefore, FIG.
As shown in FIG. 7, when the generated musical tone is continued and a new short musical tone is to be played, all the keys of the notes with the long decay time are depressed while the damper pedal 7 is depressed. Before releasing the new pedal 6
Is turned on, and the damper pedal 7 is released. And
With the new pedal 6 depressed, a key of a note with a short decay time is pressed and released.

When such a key operation and the operation of the new pedal 6 and the damper pedal 7 are performed, first, when the damper pedal 7 is depressed, the registers D1F to DNF are set to "0" by the damper pedal processing of FIG. Even if the key is released after that, as long as the damper pedal 7 is depressed by the key processing of FIG. 8, the register DnF during sound generation is not set to "1" but is set to "0". Will be maintained. As a result, the musical tone being generated, which is a note to be continuously generated, is generated at a smaller attenuation rate (rate = b) in the envelope control process of FIG.

Thereafter, when the new pedal 6 is turned on, the damper pedal 7 is executed by the new pedal processing shown in FIG.
Are not on, all the registers D1F to DN
F is set to "0", but when the new pedal 6 is turned on while the damper pedal 7 is on as shown in FIG. 10, the register D1 is already processed by the damper pedal processing.
Since F to DNF are set to "0", in the new pedal processing of FIG. 7, the new pedal processing is terminated without setting the registers D1F to DNF to "0".

Thereafter, even if the damper pedal 7 is turned off, since the new pedal 6 is now in the on state (register NPF = "1"), the registers D1F to DN
F is not set to "1" and is maintained at "0".
As a result, in the envelope control processing of FIG.
Therefore, the sound is generated with a small attenuation rate (rate = b).

Thereafter, when a musical tone of a new short note is played while the new pedal 6 is depressed, the registers D1F to DNF corresponding to the musical tone in the new pedal processing of FIG. After the key is released, the state becomes "1". As a result, in the envelope control processing of FIG. 9, in step E8, a small attenuation rate (rate = b) is selected for the musical tone of the note to be continued which is released before the new pedal 6 is depressed. A large decay rate (rate = c) is selected for a musical tone of a note that is released when the new pedal 6 is on and should be played short.

Therefore, the musical sound of a long note is transmitted to the control unit 2.
Is attenuated at a smaller decay rate (rate = b), and the musical notes of short notes played thereafter are given a larger decay rate (r
te = c). As a result, note performance as shown in FIG. 10, which could not be performed accurately in the past, can be performed accurately, can be performed simply and easily, and a wider variety of performances can be performed. .

In this case, even if the electronic musical instrument 1 does not include the damper pedal 7, or if the electronic musical instrument 1 includes the damper pedal 7 and does not dare use the damper pedal 7, FIG. After depressing and releasing all the keys of the notes with long decay time, depress the new pedal 6,
Thereafter, by pressing a key of a note having a short decay time, the performance of the note as shown in FIG. 10 can be performed accurately. However, when the performance is performed in combination with the damper pedal 7, more accurate performance of notes can be performed more easily and easily.

In the above embodiment, the electronic musical instrument 1
However, the present invention has been described with reference to a case where a new pedal 6 and a damper pedal 7 are provided. However, the present invention is not limited to this. For example, a sostenuto pedal or a soft pedal provided in a conventional acoustic piano or electronic musical instrument is further provided. By performing in combination with the functions of these pedals, it is possible to perform even more diverse performances.

Further, in the above embodiment, the case where the present invention is applied to the piano-type electronic musical instrument 1 has been described, but it is needless to say that the present invention is not limited to this.

Further, in the above-described embodiment, the tone attenuation rate is controlled only when the damper pedal 7 and the new pedal 6 are on and off, but the invention is not limited to this. And new pedal 6
The decay rate of the musical tone may be controlled by the operation amount (depressed amount) of.
The decay rate of the musical tone can be changed more variously,
A more versatile performance can be performed.

[0075]

According to the present invention, when a key is depressed, a tone corresponding to the depressed key is generated, and the attenuation rate of the tone generated by the key depress is determined by the operating state of the operating means. Control according to. That is, when the operating means is in the OFF state, the level of the generated musical tone is attenuated at a predetermined attenuation rate after the key is released, and when there is a musical tone which has already been released and attenuated when the operating means is turned on, the The level of the musical tone is attenuated at an attenuation rate smaller than the predetermined attenuation rate. Further, the level of the tone released when the operation means is in the ON state is attenuated at the predetermined (small) attenuation rate.

Therefore, as shown in FIG. 10, when a musical tone continues to be generated and a new short musical tone is to be played, all the keys of the musical tone to be continued are depressed and the operating means is turned on. Then, press the key of the short musical tone. When the key operation and the operation of the operating means are performed, the tones to be continued are attenuated at a small attenuation rate, and the tones to be played short after that are played at a large attenuation rate (the predetermined attenuation rate). ). As a result, FIG.
Can be performed accurately, and can be performed simply and easily, so that a wider variety of performances can be performed.

Further, a damper pedal and an operating means are provided, and when the damper pedal is turned on, the level of the generated musical tone is attenuated at an attenuation rate smaller than the above-mentioned predetermined attenuation rate, and the level of the musical tone is made smaller than the attenuation rate of the operating means. If priority is given to the damping rate by the damper pedal, a more versatile performance can be performed by combining the operation of the damper pedal and the operation means.

Further, when the attenuation rate is changed according to the operation amount of the operation means or the operation amount of the damper pedal,
Even more diverse performances can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment in which the present invention is applied to an electronic musical instrument.

FIG. 2 is a diagram showing a relationship between an operation state of a new pedal and an attenuation rate of a musical sound.

FIG. 3 is a diagram showing a relationship between an operation state of a damper pedal and a musical sound attenuation rate.

FIG. 4 is a flowchart showing main processing of the electronic musical instrument of FIG. 1;

FIG. 5 is a flowchart showing detailed processing of the initialization processing of FIG. 4;

FIG. 6 is a flowchart showing a detailed process of a damper pedal process of FIG. 4;

FIG. 7 is a flowchart showing a detailed process of a new pedal process of FIG. 4;

FIG. 8 is a flowchart illustrating detailed processing of the key processing of FIG. 4;

FIG. 9 is a flowchart showing an envelope control process.

FIG. 10 is an operation explanatory view showing operating states of notes played by the electronic musical instrument of FIG. 1 and a damper pedal and a new pedal.

FIG. 11 is an explanatory diagram of a change state of a tone level corresponding to a key press and a key release operation.

FIG. 12 is a diagram showing a relationship between an operation state of a damper pedal and an attenuation rate of a musical sound.

FIG. 13 is a diagram showing a relationship between an operation state of a sostenuto pedal and an attenuation rate of a musical sound.

FIG. 14 is a diagram showing a relationship between an operation state in which a damper pedal and a sostenuto pedal are combined and a musical sound attenuation rate.

FIG. 15 is a diagram showing an example of a note that cannot be accurately played by a conventional electronic musical instrument.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic musical instrument 2 Control part 3 ROM 4 Keyboard part 5 Operation part 6 New pedal 7 Damper pedal 8 Sound source part 9 Sound system

Claims (4)

(57) [Claims] A keyboard having a plurality of keys; a musical tone generating means for generating a musical tone in response to a key depression operation by the keys; an operating means capable of being in an on state and an off state; In this case, the level of the tone generated by the tone generating means is attenuated at a predetermined attenuation rate after the key is released, and the level of the tone which has been released and attenuated when the operation means is turned on is set to the level described above. The tone generated by the tone generator when the key is depressed when the operating unit is in the on state is attenuated at an attenuation rate smaller than a predetermined attenuation rate.
Control means for attenuating the level at the predetermined attenuation rate. 2. The electronic musical instrument further comprises a damper pedal capable of being in an on state and an off state, wherein the control means controls a level of a tone generated by the tone generating means when the damper pedal is in an on state. 2. The electronic musical instrument according to claim 1, wherein the electronic musical instrument attenuates at an attenuation rate smaller than the predetermined attenuation rate, and prioritizes an attenuation rate by the damper pedal over an attenuation rate by the operation means. 3. The electronic musical instrument according to claim 1, wherein the control unit changes the attenuation rate according to an operation amount of the operation unit. 4. The electronic musical instrument according to claim 2, wherein said control means changes said attenuation rate according to an operation amount of said damper pedal.