JPS63132296A - Electronic musical instrument - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION ``Industrial Application'' J This invention relates to an electronic musical instrument capable of automatic performance.

[Prior Art] Various electronic musical instruments capable of automatically playing have been developed in the past, and one example is described in Japanese Patent Publication No. 57-49994.

``Problems that the invention seeks to solve'' However, conventional electronic musical instruments of this type only generate musical sounds by reading performance information (pitch information, timbre information, etc.) stored in memory. As a result, the same performance sound is always generated, making the performance monotonous and uninteresting when used for demonstration performance of an electronic musical instrument, for example.

This invention was made in view of two consecutive circumstances, and its purpose is to provide an electronic musical instrument that can improve the above-mentioned monotony and provide variable automatic performance sounds.

``Means for Solving the Problems'' This invention provides an automatic performance data generation means for generating automatic performance data, a timbre switching information generation means for generating timbre switching information, and a musical tone generating means for generating musical tones based on the automatic performance data. random data generating means for randomly generating various timbre designation data; and each time the timbre switching information generating means outputs timbre switching information, the output data of the random data generating means is converted into a timbre parameter. The present invention is characterized by comprising means for converting the musical tone into a musical tone and supplying the musical tone to the musical tone generating means.

"Function" In the present invention, attention is paid to the timbre of the automatic performance sound, and the monotony of the automatic performance is improved by randomly changing this timbre as the music progresses.

``Embodiment'' Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The figure is a block diagram showing the configuration of an embodiment of the present invention. In this figure, reference numeral 1 is a keyboard, and 2 is a key press detection circuit. This key press detection circuit 2 constantly scans the key switches provided on each key of the keyboard l to check the on/off state of the key, and when a newly turned on/off key is detected, , outputs an on/off signal indicating on/off status and the key code of the key. These key codes and on/off signals are supplied to the tone generator 4 via the selector 3. Tone generator 1 is on/off indicating key-on.
When an off signal and a key code are supplied, the amplifier takes the pitch of the key code and generates a musical tone signal with a tone based on the tone parameter supplied to the terminal TN;
A sound system 5 consisting of speakers and the like is output. As a result, the musical tone of the pressed key on the keyboard l is generated. Also, on/off indicates key-off.
When an off signal and key code are supplied, the generation of musical tone signals corresponding to that key code should be set to the decay state.

Next, reference numeral 6 is an automatic performance device. This automatic performance device 6 includes performance information for automatic performance (for example, key-on/key-on/
What is this memory that stores data that indicates an off event, a key code that indicates the key, and the time between events, or data that consists of pitch information and note length information, etc., sequentially as the song progresses? The stored performance information is sequentially read out according to a predetermined tempo clock. In this case, in addition to the performance information described above, the memory also stores timbre switching data indicating timbre switching for each desired performance section (phrase), 7J'-;k.
)I? iyN+-J-t lost to town F, 1. -,”/7'l
*, (1-)nkm-j-b are also read out sequentially. Further, this automatic performance device 6 has a terminal T
When the "l" signal is supplied to S, the memory is read. Note that such an automatic performance device is disclosed in, for example, Japanese Patent Publication No. 57-119994 and Japanese Patent Application Laid-Open No. 54-118225.
A device such as that shown in the publication can be used.

The distribution circuit 7 outputs the performance information to the selector 3 when the automatic performance device 6 outputs the performance information, and outputs the pulse signal P c to the OR gate 8 when the tone switching data is output.
Go out into the world. The demonstration performance instruction circuit 9 is composed of a switch for instructing demonstration performance (automatic performance) and a circuit for converting the on/off state of the switch into an electrical signal. When the switch is turned on, a signal ST ( l” signal).

The random tone code generation circuit 10 is a circuit that randomly generates 100 types of numbers (tone codes) from "0" to "99" using a digital pseudo-random signal generator such as a maximum length counter. be. As is clear from the above tone code, the electronic musical instrument of this embodiment can generate musical tones of 1.0 different tones, and each tone is assigned a tone code of "0" to "99". It is attached. The timbre selection circuit 11 is provided with an operator for timbre selection, and when the operator selects one of the 100 types of timbres, the timbre code corresponding to the selected timbre is transmitted to the timbre change event detection circuit 12 and It is output to the selector 13. The timbre change event detection circuit I2 outputs a pulse signal P11 when the timbre code output from the timbre selection circuit 11 changes. The selector 13 selects and outputs either the timbre code output from the random timbre code generation circuit 10 or the timbre code output from the timbre selection circuit 11. The output timbre code is read into the latch 14 and outputted to the timbre parameter generation circuit 15 and the timbre display circuit I6.

The timbre parameter generation circuit 15 generates a plurality of timbre parameters corresponding to the timbre code output from the latch 14 and outputs them to the tone generator 4. Further, the tone color display circuit 16 numerically displays the tone color code output from the latch 14.

Next, the operation of the electronic musical instrument having the above configuration will be explained.

(1) When performing using the keyboard 1 In this case, the performer turns off the switch of the demonstration performance instruction circuit 9, and then performs using the keyboard 1. When the switch is turned off, the signal ST becomes a "0" signal and the output of the inverter 17 becomes a "1" signal. As a result, the output of the key press detection circuit 2 is selected by the selector 3 and supplied to the tone generator 4. Also, signal S 7I
' becomes a "0" signal, the output J of the AND gate 18 is "0", the output of the inverter 19 is "1", and the OR gate 2
The output of o becomes “B”. This causes the tone selection circuit Il
is selected by the selector 13, and the latch I4
supplied to Here, when the performer selects a timbre using the timbre selection operator of the timbre selection circuit 11, the code of the selected timbre is supplied to the manual end of the latch 14 via the selector 13. At this time, a pulse signal Ph is output from the timbre change event detection circuit 12 and is supplied to the load terminal of the latch 14 via the OR gate 8. As a result, the timbre code output from the timbre selection circuit II is read into the latch 14, and the timbre parameter generation circuit 15
and is supplied to the tone color display circuit I6. As a result, the timbre parameters corresponding to the timbre selected by the performer are supplied to the 1.--generator 4, and the chord of the same timbre is displayed on the timbre display circuit 16.

In this state, when the performer performs a performance using the keyboard l, a key code and an on/off signal are sequentially output from the key press detection circuit 2 and supplied to the tone generator 4 via the selector 3.

The tone generator 4 is supplied with a key code.

A musical tone signal is formed based on the on/off signal and the tone parameter output from the tone parameter generation circuit 15, and output to the sound system 5. As a result, a musical tone having the tone selected by the tone color selection circuit 11 and having a pitch corresponding to the operation of the keyboard l is generated.

Further, when the performer switches the operator of the timbre selection circuit 11 during a performance, the timbre change event detection circuit 12 outputs a pulse signal Ph, and the timbre code after the timbre switching is read into the latch 14. As a result, the sound system 5 generates a musical tone of the switched tone.

(2) When performing a demonstration performance (automatic performance) In this case, the switch provided in the demonstration performance instruction circuit 9 is turned on. As a result, the signal s'F becomes a "1" signal. Signal S
When 'F becomes the "L" signal, the selector 3 selects the output of the distribution circuit 7 and outputs it to the 1.--n generator 4. Also, at this point, the output of the timbre change event detection circuit I2 is at the "0" signal, and the output of the inverter 22 is at the "l" signal, so when the signal S'F becomes the "l" signal, the antgame 1 -18 output or “1” signal, inverter 19
The output of the OR gate 2o becomes a "0" signal, and the tone code (hereinafter referred to as tone code) output from the random tone code generation circuit 1o is sent to the latch 14 via the selector 13. Supplied to the input end.

Further, when the signal ST becomes a "1" signal and this "l" signal is supplied to the terminal 'rS of the automatic performance device 6, from then on,
Reading of the memory within the automatic performance device 6 is performed according to a predetermined tempo clock. In this case, the first data among the data stored in the memory in chronological order is timbre switching data, and this data is first read out and supplied to the distribution circuit 7. The distribution circuit 7 receives this tone color switching data and outputs a pulse signal Pc. This pulse signal Pc is supplied to the load terminal of the latch 14 via the OR gate 8, whereby the tone code A output from the random tone code generation circuit IO is read into the latch 14. Thereafter, performance information is sequentially read out from the memory and supplied to the tone generator 4 via the distribution circuit 7 and selector 3. The tone generator 4 forms a musical tone signal corresponding to the supplied performance information and the tone code A stored in the latch 14,
Output to sound system 5. As a result, automatic performance sound is generated in the sound system 5.

When the predetermined phrase is automatically played, the tone color switching data is read out from the memory again. As a result, the pulse signal Pc is output from the distribution circuit 7, and the timbre code (hereinafter referred to as timbre code B) output from the random timbre code generation circuit IO at that time is read into the latch 14. Thereafter, the performance information is sequentially read out from the memory again, and thereby the sound system 5 generates a musical tone, or in this case, the tone changes from the tone color or tone color code to the tone color of tone color code B.

In this way, during automatic performance, each time the tone color switching data is read from the memory, the tone color of the generated musical tone changes randomly.

Further, during this automatic performance, when the tone color selection operator of the tone color selection circuit 11 is operated, a pulse signal Ph (a "1" signal) is outputted from the tone color change event detection circuit 12. As a result, the output of the AND gate 18 becomes "0", the output of the OR gate 20 becomes "1", and the timbre code output from the timbre selection circuit 11 is supplied to the latch 14 via the selector 13. At this time, the pulse signal Ph is supplied to the load terminal of the latch 14 via the OR gate 8.
As a result, the tone color code output from the tone color selection circuit II is read into the latch I4.

In this way, in the electronic musical instrument described above, even during automatic performance, by operating the operator of the tone selection circuit 11, the tone from that point until the next tone change data is read is manually set. You can freely select the tone you want to hear.

Although the above embodiments are applied to demonstration performances, it goes without saying that the present invention can also be applied to normal automatic performances.

In addition, in the above embodiment, an example was shown in which the tone switching data is stored in chronological order along with the performance information and read out sequentially, but the measure unit is detected by counting the reading tempo clock, The timbre switching data may be outputted at intervals (1 bar, 2 bars, 4 bars, etc.).

In addition, in the above embodiment, if the pulse signal Pc is not supplied to the latch 14 at the start of automatic performance (and for a predetermined period thereafter), the player can
Automatic performance can be started using the tone specified in .

Further, in the above embodiment, the storage method of key information etc. is changed to an event l.
- Although the storage method is used, other methods such as storing pitch and note length information may be used.

Further, the present invention may be applied to a performance recording and reproducing device that can record and reproduce the performance of a performer.

Alternatively, the player may be able to specify a phrase for generating tone color switching data.

In addition, although the above embodiment is based on hardware,
Each process may be performed by software using a microcomputer.

``Effects of the Invention'' As explained hereinafter, according to the present invention, it is possible to randomly change the timbre of automatic performance as the song progresses, thereby improving the monotony of automatic performance. This makes it possible to perform performances rich in content. Further, according to the present invention, each tone color is automatically and sequentially sounded, albeit randomly, so that an effect can be obtained in which the image of each tone color can be grasped.

[Brief explanation of the drawing]

The figure is a block diagram showing the configuration of an embodiment of the present invention. 4... Tone generator, 6... Automatic performance device, 7... Distribution circuit, IO... Random tone code generation circuit, 14... Latch, 1
5...Tone parameter generation circuit.

Claims (3)

[Claims] (1) automatic performance data generation means for generating automatic performance data; timbre switching information generation means for generating timbre switching information; musical tone generation means for generating musical tones based on the automatic performance data; and various timbre specification data. random data generation means for randomly generating timbre switching information, and each time the timbre switching information generation means outputs timbre switching information, the output data of the random data generation means is converted into timbre parameters, and the converted data is supplied to the musical tone generation means. An electronic musical instrument comprising means and. (2) The automatic performance data generating means and the tone color switching information generating means store the automatic performance data in the order of progression of the music, and also have a memory in which the tone color switching information is stored in chronological order, and the data in the memory. 2. The electronic musical instrument according to claim 1, further comprising reading means for sequentially reading out the information in accordance with a predetermined clock. (3) The timbre switching information generating means counts clocks corresponding to the tempo of automatically played music, and generates timbre switching information based on the count result. Electronic musical instruments listed.