JPS585793A - Electronic musical instrument with automatic performance fuction - 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] The present invention relates to an electronic musical instrument having an automatic performance function.

Some conventional musical instruments with an automatic performance function store performance information on a cassette tape in the form of digital signals for a melody played by a performer, and rewind and reproduce the cassette tape during automatic performance. This method has the disadvantage of poor operability, as it requires rewinding and rewinding the tape each time during automatic performance.

In addition, the melody played by the performer is digitally processed and the command code, dP-on time and dP-off time of each operation key are stored in the semiconductor memory, and the above-mentioned stored data is read out and played during automatic performance. be. In the case of this method, conventionally, a counter is provided, and the counting operation of the counter is started at the same time as the music starts to be played, while the ON time and OFF time of each operation key for the music being played can be obtained from the count value data of the counter. , which is stored in the semiconductor memory as a series of serial time data.

Therefore, in this method, it is necessary to use a counter with a capacity large enough to measure the entire performance time of Tokyoku.
For long-term performances, the number of counters required becomes very large, which increases the cost and also increases the number of bits of the count value data stored in a semiconductor memory, increasing the capacity of the semiconductor memory. Furthermore, as a result, LSI
There are also disadvantages that make it undesirable.

This invention was made in order to improve the above-mentioned situation, and its purpose is to provide an electronic device with an automatic performance function that enables automatic performance using extremely small-capacity timekeeping means, storage means, etc. The purpose is to provide musical instruments.

Various embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment. In Figure 1, 1 is the keyboard.

Has many keys. 2 is the switch panel.

The automatic performance mode (A
In addition to two first mode switches for specifying U'l'O)V and a second mode switch 2B for specifying the performance mode, there are various switches such as a tone specifying switch and a rhythm specifying switch.

The operation signals of each key on the keyboard 1 are given to the key control unit 3, and the signal is sent to the first mode switch 2.
Each output of the mode switch 2B is given to a VXRAM (random access memory) control section 4. Key human control unit 3
generates and outputs a large signal KF from each of the above key operation signals. The key code, key-on signal KN, and key-on signal KF are both supplied to the tone generator 5Vc in the normal performance mode, and to the tone generator 5 in the recording mode.

The above key code is given to six registers in the register section 6.

The RAM control unit 4 controls each operation of reading and writing data to the RAM 7 and controls the counting operation of the time counter 8. With the drum, RAM? In the state shown in Fig. 2, in order to create data for automatic performance, each data of the key code, on time, and off time of each operation key during the performance of the melody played by the performer in advance is collected. , 2 addresses. Then, the key code and on time are stored as a pair of data at the first location.

Also, key off code and off time are set as a pair of data.
It is memorized at address number.

Both 1 hour counter 8 is the above on time and off time? This is a counter for measuring time. For this reason, the reset input terminal of the time counter 8 is given R each time a key is pressed or released, a reset No. 1 R8 outputted from the AM control section 4, a reset number 3, and a count of the clock e. Resume operation. Further, the on time (data) and off time (data) obtained by the time counter 8 are given to the register 6B of the register section 6. On the other hand, each time a key is pressed or released,
RAM f! Fi+ # Read signal R again from part number
D is outputted and given to the register section 6, so that the key code and key-on time data or the key-off code and key-off time data are read into the registers 6A and 68 of the register section 6, respectively.

The RAM control unit 4 sends a read/write signal R/W to the RAM 7.
In addition to outputting the key-on signal KN and key-off signal KF in the memory mode, and in the automatic performance mode, both song signals eq from the matching circuit 9, which will be described later, are output.
For each input, a +1 signal is output and the address counter 10
and increments the address. In addition,
Address counter 10 output is RA as address data
Given to M7.

The matching circuit 9 is a circuit that compares the on-time data or off-time data read from the RAM 7 and the counted value data from the 1-hour counter 8 during automatic performance mode, and when the counted value data matches the on-time data. and when the count value data matches the off-time data, the coincidence signal eq is output, respectively.

The key code, on time data, off time data, and key 7 code' read out from the RAM 7 are respectively provided to the musical tone creating section 5. The musical tone creation section 5 creates musical tones based on the key code from the key control section 3 when in the storage mode.

Also, in the automatic performance mode, musical tones are created based on the above data read out from the RAM 7.

Sound is emitted from the speaker 11.

Next, the operation of the above tlcl embodiment will be explained. First.

Melody day for automatic performance! @RAM? The operation of writing to is explained. In this case, turn on the switch (second mode switch 2B on the channel Z) and set the recording mode Y. This allows the RAM control unit 4 to read/write the write command.
Write signal R/Wt - input as appropriate and provide to RAM7.

As shown in FIG. 2, when the key of the scale A1 is operated on the keyboard I as the first key of the melody, the key control section 3 produces the tone 15IA s in accordance with the key depression operation.
Outputs the instruction code indicated by f, and registers 6 of register section 6.
In addition to giving the key-on signal KN to the person and musical tone creation section 5,
V is outputted and given to the 8 person M control unit 4. Therefore, the RAM control control line number 1 (l!) is output and the address 0 address counter 1 is output.
0, and RAM 7 is addressed with that one address. Further, the AM control section 4 outputs a reset signal R8t and applies it to the time counter 8, thereby resetting the time counter 8 and starting the operation of measuring the ON time of the key of the scale As. The count data of the one hour counter 8 is stored in the register section 6.
is transferred to register 6B. Here, the musical tone generating section 6 generates a musical tone based on the scale population, and emits the sound from the speaker 11, so that the performer can confirm the musical scale As of the operation key also by hearing.

When the key of the scale As is released, the key manual control unit 3 outputs a key-off signal KF in accordance with the key release operation, and %R
It is given to the AM control section 4. Therefore, the read signal RD is output from the RAM control section 4.

The musical scale AsO pitch data and on-time data applied to the registers 6A and 6B of the register unit 6 are read, and then written to the first place of the RAM (RAM) as shown in FIG. 2, and at the same time, a +1 signal is output. address counter 1
The content of 0 is updated to "2".

After that, the RAM control unit 4 outputs a reset signal R8t-1.
The time counter 8t is reset to start counting the off time. On the other hand, a key-off code is outputted from the key control unit 3 and transferred to six registers in the register unit 6.

Is there a pause in Tsuma 9J sheet music? In this case, the counter 8 continues to measure time for one hour until the next key (in this case, scale C4>w) is pressed after a time corresponding to that length, and the musical tone creation section 5 does not create a musical tone. Does not emit sound.

When the key of scale C4 is pressed, the key manual control unit 3
A key-on signal KNt' is output from the key-on signal KNt'. For this reason, the RAM control unit 4 outputs a read signal RDt', and in response, the key-off code and key-off time data written in the register 6B of the register unit 6 are sent to R, AM 702 Honchi as shown in FIG. At the same time as the data is written, the RAM control control line number +1 signal is output, and the address counter 100
Content number 1 is updated to "3". Thereafter, the RAM control section 4 outputs a reset signal R8V, resets the one-hour counter 8V, and starts a time counting operation Y for the on-time of the scale C4. Also, the musical tone of scale C4 is created and emitted by the musical tone creation section 5 and the speaker 11.
This is done by

Thereafter, the key code, on-time data, key-off code, and off-time data of the duplicate key are sequentially written over the two locations.

Data for automatic performance is transferred to RAM7 as described above.
That is, once a melody is written, automatic performance based on this melody becomes possible from now on.

That is, when performing automatic performance 1, first, the first mode switch 2AV is turned on to set the automatic performance mode. In response to this, the ordinary person M control unit 4 thereafter outputs a read/write signal R/W@ of a read command.

Give it to RAM7.

Next, 1, for example, the automatic performance start switch (15!
(not shown), automatic performance starts. That is, R
A +1 signal is output from the AM control control line number and applied to the address counter 10 to designate the address at location 111 of the RAM 7. For this purpose, the key code and off time data of the scale As are read from the RAM 7 typ l 9Jk and given to the musical tone creation section 5, and in response to this, the musical tone creation section 5 creates a musical tone of the scale As, and outputs it from the speaker 11. emit a sound. Further, on-time data of the scale As from the RAM TE is provided to the matching circuit 9.

In both cases, when the above-mentioned +1 signal is output, a reset signal R8 is output from the AM control section 4, the one hour counter 8 is reset, and the time counting operation is started. The count value data is then given to the coincidence circuit 9 and compared with the on-time data.

Until the matching circuit 91C detects a match between both data, the musical tone of the scale As is emitted. When the coincidence of both data is detected and the coincidence circuit 9 outputs both song signals eqY and gives them to the RAM control section 4, the RAM control section 4 outputs +
1 signal and reset signal R8v are output. Therefore, the address counter 10 is incremented by 1, and thereafter, the RAM 7 is designated with an address of 211. Further, the time counter 8 is reset and the time counting operation is restarted. and RAM7
The medium-off-void and off-time data are read out from the 02 tone and given to the musical tone creation section 5, and the above-mentioned off-time data is given to the matching circuit 9.

Therefore, the musical tone creation section 5 does not perform any musical tone creation operation, and no musical tone is emitted. Further, the coincidence circuit 9 performs a comparison operation between the off-time data and the count value data, and when both data match, outputs a dispersion signal eq and supplies it to the RAM control section 4.

In response to this, the RAM control section 4 outputs a +1 signal and a reset signal R8v, so that the RAM 7 is addressed to address 3, the time counter 8 that has passed t is reset, and the counting operation is restarted.

With the above operations, the automatic performance process for a pair of musical tones of the scale As preset at addresses 1 and 2 of the RAM 7 is completed. From then on, automatic performance processing for the musical tone of scale C4 preset at addresses 3 and 4 is started, and after that, a series of data is read from the RAM 7 in the same manner as described above, and the automatic performance of the above-mentioned melody continues. be done.

Incidentally, when the keys on the middle board are operated in accordance with the automatic performance, the key code of the key operated key is outputted from the key manual control section 3 and given to the musical tone generation section 5.

Since the musical tones are created and emitted, it is possible to automatically perform musical pieces, for example, as accompaniment.

Next, a second embodiment will be described with reference to FIGS. 3 and 4. In this second embodiment, as shown in FIG.
For writing to AM.

By omitting the writing of the key-off code in the first embodiment, the RA
This allows the capacity of M to be reduced.

Although the circuit configuration is shown in Figure 3, circuits whose functions are the same or substantially the same as those in the @i embodiment shown in Figure 1 are given the same symbol, and detailed explanations thereof are omitted. .

Therefore, in FIG. 3, to explain the different components from FIG. 1, a register 6C for temporarily storing off-time data is added to the register section 6, and the input sides of registers 6B and 6C of the register section 6 A switching gate q is provided which is gate-controlled by a gate control signal g from the RAM control section 4. Then this switching game)G
is 1. For example, the gate control signal g has a double logic level IF.
71” signal, it is switched to the register 6B side, and the other side.

・When the signal is 0°, it is switched to the register 6C side.

Further, read signals RDs and RDa are output from the RAM control section number, signal RDt instructs the read operation of registers 6 and 6B, and signal RD instructs the read operation of register 6C. Note that this read signal RDst! At the time of Keyots,
RDm outputs tc when the key is turned on.

Next, the operation of the second embodiment will be explained. First.

When presetting RAM7 Hemelody.

Similarly to the first embodiment, the second mode switch 2Bv is turned on.

As a result, the read/write signal R/W of the write command is appropriately applied to the RAM 7.

Next, when the key of the first scale As is pressed, the key manual control unit 3
The key code and key-on signal vKN of the musical scale A- are output from . Therefore, +1 from RAM 11 control s4
Signal, reset signal 88 car output.

Furthermore, a gate control signal g of 1# level is output.

Therefore, the RAM 7 is designated as an address from now on, and the key code of the scale AI is applied to the six registers of the register section 6. In addition, the above key code is the sound collection creation section 5
As a result, musical tones of scale As are created and emitted. Furthermore, the time counter 8 is reset, and the operation of measuring the on-time is started.

-tL-1: By outputting the gate control signal g at the 1'' level, the switching gate G is switched to the register 6B@ during the on-time counting operation.

When the key of the scale As is released, the key control section 3 outputs a key-off signal KF, and therefore the emission of musical tones of the scale population stops.''The RAM control section 4 also outputs a read signal RDs, The key code and on-time data of the scale As are set in the registers 6A and 6B.Then, the reset signal R8 and the @O# level gate control signal g are output, respectively.

After the one-hour counter 8 is reset by the reset signal R8, it starts counting the off time of the key of the scale As. Further, the switching gate G thereafter switches the gate to the register 6C side of the register section 6.

Next, when the key of the primary scale C4 is pressed, the key control unit 3
outputs a key code of scale C4 and a key-on signal KNt-. Therefore, the musical tone creation section 5 starts creating a musical tone of scale C4.

In both cases, the RAM control unit 4 outputs a read signal RD1, and sets the count value data t to the register 60, which provides the off time of the scale As. Next, the data of registers 6 to 6C are written to one area of the RAM as shown in FIG. After that, the RAM control section 4 gives a +1 signal to the address counter 10.

As a result, RAM 7 is subsequently addressed to two locations. Furthermore, the time counter 8 is reset by the reset signal BS, and the time counting operation of the on-time of the scale C4 starts at the primary - level. In addition, a gate control signal (g) of 11 lB is applied to the switching baud (GK).

By the above operation, the middle chord and on time of the first key (scale As) for the first key in RAM 7 are determined.

The writing process of a block of data during the off time is completed.

Then, in the same manner as described above, 2
Each key code and on time for the 1st key, 3rd key, etc.

Off time i:J(- is written sequentially as data in - blocks, respectively.

When performing automatic performance using the data written in the RAM 7 as described above, first, the first mode switch 2AY is turned on to set the automatic performance mode. As a result, from now on, the RAM
) is given a read/write signal R/W.

Next is the start switch? When turned on, automatic play starts at 6x. That is, the RAM control control unit 1 signal and the reset signal R8Y are respectively output. For this reason, address color y
10 is incremented by 1, and from then on, the RAM 7 is designated with a unique address, and the time counter 8 is reset, starting a timekeeping operation.

On the other hand, from the first place of RAM7 to the middle court of the scale As,
The on-time and off-time data are read out and given to the musical tone creation section 5, so that the musical tone creation section 5 will henceforth perform the scale A.
The musical tone I is created for a time equal to the above-mentioned ON time, and after the passage of the above-mentioned ON time, the above-mentioned ON time is equaled to the OFF time, and each operation of stopping the musical tone creation operation for one hour is started.

That is, the ON time of the scale As read from the RAM address 701 is first given to the coincidence circuit 9 and compared with the count value data of the one hour counter 8. Then, when both data match, both song signals eq are outputted and given to the RAM control unit SHIKU. For this reason, RAM 11! The control unit 4 receives a reset signal R.
8t/ is output to reset the time counter 8 and restart the timekeeping operation. Also, depending on the ξ angle, the matching circuit 9 subsequently receives the following information.
From 11) in RAM 7, input the off time data for scale A. Incidentally, at this point, the emission of the musical tone of the musical scale ginseng stops.

Next, when the next song signal aq is output from the matching circuit 9,
In response, the R, AM control section 4 outputs a +1 signal and a reset signal R89. Therefore, from now on, the second address of the RAM 7 is designated and the process of producing the musical tone vc of the first pitch 04 is started and executed in the same manner as described above.

Even in the case of the second embodiment, it is of course possible to perform an IK performance in conjunction with the above-mentioned automatic performance.

As explained above, when automatic performance data is written into the storage means by key operations on the +-board, the timer is reset each time the key is pressed or released. The on-time and off-time data for the key code of the above-mentioned key are obtained, and the key code, on-time, and off-time data written in the storage means are used for automatic performance. Since an electronic musical instrument with an automatic performance function is provided, the capacity of the timekeeping means can be greatly reduced compared to the conventional one, and the storage capacity of the storage means can also be reduced accordingly.

Therefore, it has the advantage of contributing to cost reduction.

It is also advantageous for LSI conversion! 1. Another advantage is that it can contribute to miniaturization of the device.

[Brief explanation of drawings]

1 and I@2 show a first embodiment of the invention,
Figure 111 is a block circuit diagram of the same example, No. 25! J is R, A
Figures 3 and 4 are diagrams showing an example of the storage state of M7. l! FIG. 3 is a block circuit diagram of the same example, and FIG. 4 is a diagram showing an example of the storage state of RAM γ. 1... Battle board, 2... ◆ Switch panel, 2A.
...First mode switch, 2B...Second mode switch. 3... Key manual control section, 4... RAM control section,
・Musical tone creation section, 6...Register section, 7-RAM%8-
・Time IVI fz f) yri%9...matching circuit, 1
0... Address callan p, Q... switching gate. Patent applicant Casio Computer Co., Ltd. Figure 2 A-11

Claims (1)

[Scope of Claims] A key human control means for outputting a key code of a skeleton operation key, a dP-on signal and a 1-off signal in response to key depression and key release operations of a key on a keyboard, and key presses of the key. A clock means that is reset each time a key is operated or released, and measures the on time and off time of the key. Storage means for storing the 10 on-times and off-times counted by the timekeeping means together with the key dispute code; and a timekeeping operation of the timekeeping means and operations of de-reading and data writing of the 6 storage means. and during automatic performance, the key code, on time and off time of a series of operation keys for a predetermined piece of music stored in advance in the storage means by the key operation are controlled by the control means. 11-41. An electronic musical instrument with an automatic performance function, comprising a musical tone generating means for generating and outputting a musical tone based on the key code, on time and off time when sequentially read out.