JPS61176990A - Automatic performer - 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] [Field of Industrial Application] The present invention relates to an automatic performance device, and more specifically, to an automatic performance device, and more specifically, an automatic performance device that has an autorhythm device and records or reproduces performance information in response to key operations on a keyboard. This invention relates to an automatic performance device.

[Summary of the invention]

The present invention provides an automatic performance device of the type described above, by starting the rhythm sound generation after a delay of, for example, one measure from the start of recording or playback.
This makes it possible to start playing a song starting with ``weak'' in ``r-weak'' without feeling unnatural.

[Conventional technology]

2. Description of the Related Art Conventionally, automatic performance devices are known that are equipped with an autorhythm device and record or reproduce performance information in response to key operations on a keyboard. In such an automatic performance device, when the start switch is turned on while in recording mode, rhythm sound generation starts at the same time as recording begins, and when the start switch is turned on while in playback mode,
Rhythm sound generation starts at the same time as playback starts. Also, if you start playing the keyboard after turning on the synchronized start switch instead of turning on the start switch in the recording mode, recording and rhythm sound generation will start simultaneously in synchronization with the start of the keyboard playing.

[Problems to be Solved by the Invention] According to the above-mentioned prior art, in the recording mode, the rhythm always starts when a key is pressed, so for a piece with a weak start that you want to start playing without rhythm accompaniment, it is difficult to start playing. There was an inconvenience in that it sometimes gave a musically unnatural feel. Furthermore, in the playback mode, the rhythm sound generation starts at the same time as the playback starts, so there is a similar problem.

[Means for solving problems]

This invention has been made to eliminate the above-mentioned inconvenience, and is characterized in that rhythm sound generation starts after a certain period of time corresponding to, for example, one bar after the start of recording or playback. be.

That is, the automatic performance device according to the present invention includes a keyboard, a musical tone generating means, a recording/reproducing means, an operator, an autorhythm device, and a control means.

The musical sound generating means generates musical sound signals based on key operation information from the keyboard, and the recording/reproducing means records or reproduces performance information according to key operations on the keyboard. The device automatically generates rhythmic sounds.

The control means controls the recording/playback means and the autorhythm device, and when recording, starts generating rhythm sounds after a certain period of time has elapsed after starting recording according to the operation of the controller. During playback, the rhythm sound generation is started after a certain period of time has elapsed after the start of playback in response to the operation of the operator.

[Effect]

According to the configuration of the present invention, when the operator is operated during recording, recording is started, and rhythm sound generation is started after a certain period of delay from the start of recording. In this way, since no rhythm sound is generated during a certain period of time, even if the player starts playing a slow-starting song on the keyboard, it will not feel unnatural.

Also, during playback, since the rhythm sound generation starts after a certain period of time after the operator is operated, there is no unnatural feeling when starting playback of a song with a low rise.

〔Example〕

B l Figure 1 shows the circuit configuration of an automatic performance device according to an embodiment of the present invention.This automatic performance device can generate keyboard performance sounds, record or reproduce keyboard performances, and autorhythm with the help of a microcomputer. Sound generation etc. are controlled.

The bus 10 includes a key switch circuit 12. Tone selection switch circuit 14, rhythm control switch circuit 1B, central processing unit (cPU) 1B, program memory 20, working memory 22. Rhythm data memory 24, performance data memory 28, performance recording/playback control switch circuit 28, external recording interface circuit 30, musical tone forming circuit 32. Tempo oscillator (OSC) 34. A rhythm sound source circuit 3B and the like are connected.

The key switch circuit 12 includes a keyboard having a large number of keys and a large number of key switches each driven by the large number of keys, and acquires key operation information by sequentially and repeatedly scanning these key switches. It is now detectable.

The tone selection switch circuit 14 can be used for flute, violin,
It includes tone color selection switches for appropriately selecting the tone of an instrument such as an organ, and by scanning these tone color selection switches, operation information for each tone color selection switch can be detected.

The rhythm control switch circuit 18 includes a rhythm type selection switch for appropriately selecting a rhythm type such as march, waltz, and swi-n-goooo, a fill-in switch for selecting a fill-in rhythm, and a start switch for controlling a rhythm start. By scanning these switches, operation information for each switch can be detected.

CPU18 is ROM (read number only memory)
Various processes are executed for generating keyboard performance sounds, recording/playback control of keyboard performances, autorhythm sound generation, etc. in accordance with programs stored in a program memory 20 consisting of the following.The details of these processes are shown in FIG. 9 to 9 will be described later.

The working memory 22 is made up of a RAM (random access memory) and includes portions that function as registers, flags, counters, etc. used in various processing by the CPU 18. Details of these various functional parts will be described later.

The rhythm data memory 24 is composed of a ROM, which stores duct pattern data for generating duct sounds, and also stores rhythm pattern data regarding fill-in rhythms and normal rhythms for each rhythm type. There is. The duct pattern data instructs a specific percussion instrument sound source in the rhythm sound source circuit 36 to produce sound at each sound timing corresponding to a quarter note, and the rhythm pattern data instructs a rhythm sound source at each sound timing corresponding to a 32nd note. This is to indicate whether or not a large number of percussion instrument sound sources in the sound source circuit 3B are to produce sound.

The performance data memory 26 is comprised of a RAM, and in this embodiment is used to store or reproduce performance information corresponding to key operations on the keyboard. The storage data format in the performance data memory 26 will be described later with reference to FIG.

The performance recording/playback control switch circuit 28 includes a record switch, a playback switch, a save switch, and a load switch, and by scanning these switches, operation information of each switch can be detected.

The external recording interface circuit 30 is provided to save the performance information stored in the performance data memory 26 to an external recording means, and to load the performance information from the external recording means to the performance data memory 2B. . Here, as external recording means, a memory pack 38 which has a built-in RAM and is backed up by a battery, and a cassette tape device 40 are provided.
8 is kana51. Tomoko Station 11nL Eugenic 1. It is now used for the save and load process. In other words, when you turn on the save switch, memory pack 3
If the memory pack 38 is installed, the performance information in the performance data memory 26 is saved therein, and if the memory pack 38 is not installed, the system automatically switches to the cassette tape device 40 and the performance information is saved therein. Such automatic switching operation is performed in the same way when the load switch is turned on during loading processing.

The musical tone forming circuit 32 forms a musical tone signal according to key operation information from the keyboard or data read from the performance data memory 26, and the formed musical tone signal is supplied to the speaker 44 via the output amplifier 42. converted into sound.

Tempo 03C34 generates a tempo clock signal at a period corresponding to a 32nd note, and this tempo clock signal is used to start an interwoven routine for generating rhythm sounds as described later.

The rhythm sound source circuit 36 includes a large number of percussion instrument sound sources such as a bass drum, snare drum, cymbals, maracas, etc., and generates a duct sound signal by driving an appropriate percussion instrument sound source according to the data read from the rhythm data memory 24. Or, it is designed to generate a rhythm sound signal. The duct sound signal or the rhythm sound signal is supplied to the speaker 44 via the output amplifier 42 and converted into sound.

The automatic performance device described above can operate in the recording mode when the recording switch is turned on, and can operate in the playback mode when the playback switch is turned on.

Operation in recording mode (Fig. 2) Figure 2 (A) and CB) are for explaining the operation in recording mode. (A) shows the case when the start switch is turned on, and (B) shows the case when the start switch is turned on. This shows a case where an any-key-on signal is generated in response to turning on a switch or starting to press a key on a keyboard.

First, in case (A), when the recording switch is turned on at time tl, it enters a synchronization wait state, and the recording mode display lamp (not shown) lights up.
When the start switch is turned on, a recording state is entered, and when a performance is started on the keyboard, the performance information is written into the performance data memory 26. Furthermore, the speaker 44 emits the keyboard performance sound, and at the time t.
A duct sound is produced at the timing of a quarter note during a period corresponding to 2 to 1 measure. During this duct sound generation period and during the synchronization waiting period described above, a beat lamp (not shown) lights up every beat. Then, when the duct sound generation period ends, a normal rhythm (for example, a normal waltz rhythm if waltz is selected) starts, and the speaker 44 also starts producing rhythm sounds. During the normal rhythm performance period, the beat lamp lights up at the beginning of each measure.

On the other hand, in case (B), when the recording switch is turned on at time t1, it enters a synchronization wait state and the recording mode display lamp and beat lamp light up. (A)
The same is true for . Then, if the fill-in switch is turned on at time t2, the recording state is entered, and the fill-in rhythm (for example, the waltz fill-in rhythm if waltz is selected) is played for one measure, and then the normal rhythm is played. . During the performance period of the fill-in rhythm and the normal rhythm, the beat lamp is lit at the beginning of each measure.

Also, assuming that an any key on signal is generated at time t2 (a key starts being pressed on the keyboard), the recording state is entered and the time signature lamp lights up at the beginning of each measure, which is the same as when the fill-in switch is turned on. A normal rhythm is played from time t2. That is, in case (B),
This is different from case (A) in that there is no duct sounding period and the fill-in rhythm or normal rhythm starts from time t2.

In addition, in either case (A) or (B),
Only the keyboard performance is recorded; duct sounds or rhythm performances are not recorded. Furthermore, when the recording switch is turned off, the recording state is canceled and the rhythm stops.

Operation in playback mode (Figure 3) Figures 3 (A) and (B) are for explaining the operation in playback mode. (A) shows data recorded with the start switch turned on. , (B) shows the case of data recorded based on fill-in switch operation or any key-on signal.

First, in case (A), when the playback switch is turned on at time tl, it enters a synchronization wait state, and the playback mode display lamp (not shown) lights up.Assume that the start switch is turned on at time t2, then playback occurs. The keyboard performance sound is reproduced in accordance with the data read from the performance data memory 2B. In this case, neither the duct sound nor the rhythm sound is generated during the period equivalent to one measure from time E2, and if the keyboard performance sound was generated during the duct sound generation period in the case of FIG. Only the keyboard performance sound is played. During this no-rhythm period and during the synchronization wait period described above, the beat lamp lights up every beat. Then, when a period of no rhythm corresponding to one measure has passed from time t2,
The performance of the normal rhythm is started, and the time signature lamp is lit at the beginning of each bar during the performance period of the normal rhythm.

On the other hand, in case (B), when the playback switch is turned on at time t1, the synchronization wait state is entered and the playback mode display lamp and the beat lamp are turned on, as in case (A). Assuming that the start switch is turned on at time t2, the playback state is (A
), but the performance of the normal rhythm starts from time t2, and the beat lamp is lit at the beginning of each bar during the performance of the normal rhythm. That is, the case (B) differs from the case (A) in that there is no period without rhythm, and the normal rhythm starts from time t2.

In addition, in either case (A) or (B),
When the playback switch is turned off, the playback state is canceled and the rhythm stops.

Next, before going into an explanation of the various routines that enable operations in the recording mode and playback mode as described above, the details of the working memory 22 used in the various routines and the storage data format in the performance data memory 26 will be sequentially explained. Explain.

Working memory 22: The working memory 22 includes portions that function as registers, flags, counters, etc. as listed below.

(1) Rhythm type register RHYSEL This register stores rhythm type data representing the rhythm type selected by the rhythm type selection switch.

(2) Rhythm data register RHYREG This register stores pattern data (duct pattern data or rhythm pattern data) for one sound generation timing read from the rhythm data memory 24, and has bit positions corresponding to the number of percussion instrument sound sources. , for each bit position, a value of "1" indicates that a sound is to be generated, and a value of 'O' indicates that a sound is not to be produced.

(3) Recording mode flag RECMD This is set to "1" when the recording switch is turned on, and "ON" when the same switch is turned off.

(4) Recording start event flag RECEVT This flag is set to "1" when the recording switch changes from off to on.

(5) Recording end event flag RECOFFEV This is set to “1” when the recording switch changes from on to off.
is set.

(6) Playback mode flag FLYMD This is set to "1" when the playback switch is turned on, and set to "0" when the switch is turned off.

(7) Reproduction start event flag PLYEVT This is set to "1" when the reproduction switch changes from off to on.

(8) Reproduction end event flag PLYOFFEV This is set to "1" when the reproduction switch changes from on to off.

(9) Synchronization wait flag S Y CWT This is set to "l" in response to the ON operation of the record switch or playback switch, and "l" is set until the synchronization wait period ends.
“Continue the state.

(lO) Duct flag TACT This flag is set to “1” in response to the ON operation of the recording switch, and if the start switch is turned on after it is set to “1”, it will remain “1” until the duct sounding period ends. If the fill-in switch is turned on after setting "l" or an any-key-on signal is generated, the signal becomes "0" accordingly.

(11)/71J rhythm flag N0NRHY This flag is set to "l" if there is data with duct in the data stored in the performance data memory 26 in the playback mode.

(12) Rhythm run flag RHYRUN This flag is set to "1'° in response to an on operation of the start switch or fill-in switch or generation of any key on signal in recording mode or playback mode.

(13) Run event flag RUNEvT This is set to 1° when there is an event that crosses the rhythm run flag RHYRUN as described above in the recording mode or the playback mode.

(14) Any key-on flag ANYKEY This flag is set to "1" in response to generation of the any key-on signal.

(15) Fill-in flag FI LLI N This is set to "1" in response to the ON operation of the fill-in switch, and when set, it becomes "O" at the end of the measure.

(18) Start flag 5 TARTSW This flag is set to “
1" or "O" is set.

(17) Bar event flag BEVT This is set to "l" at bar breaks.

(18) First tempo counter TCNT This counts the tempo clock signal from tempo 03C34 (that is, counts the number of interludes), and takes a count value from 0 to 31, and at the timing when the count value reaches 32. will be reset.

(19) Second tempo counter 0TCNT This is the first
Each time the count value differs from the tempo counter TCNT, the same count value as TCNT is set.
Take a count value of 31.

In the performance data memory 2B, as shown in FIG. 4(A), following the tone data TCD and the duct presence/absence data TAC, the key-on data KON and data corresponding to each key operation are stored. Key-off data KOF is stored sequentially. Furthermore, in such a key-on/off data array, vertical line mark data VLM is stored at the breakpoints of bars, and end mark data EM is stored at the end of the data array.

The tone color data TCD consists of 2-byte data, as shown in FIG. 4(B). In the first byte, the MSB (most significant bit) is "1", and the bits lower than this MSB represent the identification code (this is also a start mark), and in the second byte, the MSB is "0". The bits lower than the MSB represent the timbre number corresponding to the timbre name.

As shown in Figure 4(c), the duct presence/absence data TAC consists of 1 byte of data, the MSB of which is 1'',
The lower 6 bits from this MSB represent the identification code, and L
SB (least significant bit) is 1°" with duct 1MO
” indicates no duct.

The key-on data KON is as shown in Figure 4 (CD).
Consists of 4 bytes of data. The MSB of the first byte is “
1'', and the bits lower than this MSB represent the identification code, the second byte.

%J < Q Qing (“0” Ll r small MSR upper 41
The third byte indicates the key-on timing by the count value of the first tempo counter TCNT.
The SB is "OII", and the bits lower than this MSB represent the key code (octave code and note code).The MSB of the 4th byte is "O", and this MSB
By assigning a sound generation channel number to each key-on data KON in which the bits lower than B represent the sound generation channel number, each key-on data KON can be assigned to the sound generation channel corresponding to the sound generation channel number and generated.

The key-off data KOF is as shown in FIG. 4(E).
Consists of 3 bytes of data. The MSB of the first byte is “
1", and the bits lower than this MSB represent the identification code. The MSB of the second byte is O", and the bits lower than this MSB represent the identification code.
Bits lower than SB represent the key-off timing by the count value of the first tempo counter TCNT. The MSB of the third byte is "0'°, and the bits lower than this MSB represent the sound generation channel number. By assigning a sound generation channel number to each key-off data KOF, it is possible to determine whether each sound generation channel is currently sounding. The sound can be erased.

As shown in FIG. 4(F), the vertical line mark data VLM consists of 1 byte of data, the MSB of which is l'', and the bits lower than this MSB represent an identification code.

As shown in FIG. 4 (G), the end mark data EM consists of 1 byte of data, the MSB of which is "°1", and the beat 2 below this MSB is identified.

Represents a code.

Main routine 5 Next, the main routine will be explained with reference to FIG.

First, in step 50, various switches such as those described above are scanned and operation information is acquired, and in step 52
Then, various registers as described above are performed depending on the state (on or off) or change (on event or off event) of various switches.

and set flags, etc.

Next, the process moves to step 54, where control processing for generating keyboard performance sounds is performed, that is, timbre data corresponding to the operation of the timbre selection switch is supplied to the musical tone forming circuit 32 to set the timbre, and at the same time, the timbre data is set according to the operation of the timbre selection switch. Keyboard performance sound generation is controlled by supplying key-on data or key-off data corresponding to key operations to the tone forming circuit 32 to control sound generation channel assignment and the like. Then, the process moves to step 56.

In step 5B, the recording start event flag RECEV
It is determined whether there is a recording start event or a playback start event by checking whether T or the playback start event flag PLYEVT is 1". As a result of this judgment, there is an event (
Y), the process moves to step 58.

In step 58, the recording mode flag RECMD is set to “l”.
”, it is determined whether it is the recording mode. If the result of this determination is that it is the recording mode (Y), step 80
Then, the tone data (start data) TCD is stored in the performance data memory 26.

In the determination at step 58, it is not the recording mode (N)
If so, it is the playback mode, so the process moves to step 62.
Tone color data TCD is read from the performance data memory 2B and supplied to the musical tone forming circuit 32 to set the tone color.

When step 60 or 62 is completed, the process moves to step 64, where the tempo 03C34 is controlled to allow intermixing. Also, the first and second tempo counters TCNT and 0TCNT are reset, and the bar event flag BEVT is reset. These processes are necessary as initial settings at the start of recording or playback. After this, the process moves to step 6B. Note that step 56
In the determination, if there is no event (N), the process moves to step 6B without going through steps 58-64.

In step 68, the recording end event flag RECOF
FEVT or playback end event flag PLYOFFEV
By checking whether T is "l", it is determined whether there is a recording end event or a playback end event. As a result of this determination, if there is an event (Y), the process moves to step 68.

At step 8, it is determined whether it is a recording end event by checking whether RECOFFEVT is "1". If the result of this determination is affirmative (Y), recording has ended, and the process moves to step 70, where the end mark data EM is stored in the performance data memory 2B. Then, the process moves to step 72. Note that if it is not a recording end event (N) in the determination of step 8, it is a playback end event, so the process moves to step 72 without going through step 70.

In step 72, the tempo 03C34 is controlled to prohibit intermixing. This is a necessary process because recording or playback has ended. After this, the process moves to step 74.

In addition, in the determination of step 6B, if there is no event of either the end of recording or the end of reproduction (N), the process moves to step 74 without going through steps 68 to 72.

Step 74 is an autoplay subroutine for executing various processing related to recording or reproduction, which will be described in detail later with reference to FIG. 7. When the process of step 74 is completed, the process returns to step 50 and the above process is repeated.

Interwoven routine (Figure 6) Next, referring to FIG. 6, for generating rhythm sounds.

Explain interwoven routines.

This interwoven routine has a tempo of 0 as described above.
It is started every time the 5C34 generates a tempo clock signal (ie, every 32nd note timing). First, in step 80, the rhythm data register RH
The pattern data for one sound generation timing that has already been read out to YREG is output to the rhythm sound source circuit 3B. As a result, if the pattern data instructs one or more percussion instrument sound sources to produce sound, the instructed percussion instrument sound source generates a percussion instrument sound signal, and the speaker 44 generates a percussion instrument sound. Note that reading pattern data to the rhythm data register RHYREG will be described later with reference to FIG.

After this, in step 82, the first tempo counter TC
The count value of NT is incremented by 1, and then the process returns to the main routine of FIG.

Autoplay Subroutine 7 Next, the autoplay subroutine will be explained with reference to FIG.

First, in step 90, it is determined whether the playback start event has been completed by checking whether PLYEVT is "1". If the result of this determination is negative (N), the process moves to step S2, and it is determined whether there is a recording start event by checking whether RECEVT is "1".

As a result of this judgment, if there is a recording start event (Y),
The process moves to step 94.

In step 94, the synchronization wait flag sycwT is set to “
At the same time, the duct flag TACT is set to “1”.
”.Then, step 8B sets RECE
After setting VT to "O", the process moves to step 88. Note that if the determination result in step 82 is negative (N), the process moves to step 88 without passing through steps 94 and 86.

At step 3, it is determined whether the synchronization wait state is established by checking whether 5YCWT is "1". When step 94 is passed as described above, it is determined that the synchronization wait state is reached (Y), so the process moves to step 100, and a start control subroutine as shown in FIG. 8 is executed.

In the subroutine of FIG. 8, in step 102,
It is determined whether a key press on the keyboard has started by checking whether the any key-on flag ANYKEY is 1". If the result of this determination is negative (N), the process moves to step 104, and it is checked whether the fill-in flag FI LLIN is 1'. It is determined whether the fill-in switch is on. If the result of this determination is negative (N), the process moves to step 10B, and it is determined whether the start switch is on by checking whether the start flag 5TARTSW is "1". If the result of this determination is negative (N), the process returns to the subroutine of FIG. 7, and step 108 is executed.

In step 108, it is determined whether the rhythm run flag RHYRUN is "1". As mentioned above, when all the determination results in step 100 are negative, R)IY
Since it is determined that RUN is not "1" (N), the process returns to the main routine of FIG.

When the start switch is turned on while the synchronization wait state continues after the recording start event occurs as described above (this corresponds to the case in Figure 2 (A))
, the 5TARTSW is set to "1°". Therefore, the determination result at step 106 in FIG. 8 is positive (
Y), and steps 110, 112, and 114 are executed sequentially.

Step 110 sets RHYRUN to 1", step 112 sets RUNEVT C5 event flag to 1", and step 114 sets RHYRUN to 1".
Set “Opa” to YCWT.

Then, the process returns to the subroutine of FIG. 7, and in step 108 it is determined whether RHYRUN is 1''. As a result, it is determined that the angle is 1" (Y), so the process moves to step 11B.

°Step 118 is a subroutine for reading rhythm data, and is for reading pattern data etc. from the rhythm data memory 24 to the rhythm data register RHYREG to enable the generation of rhythm sounds etc. by the above-mentioned interwoven. will be described later with reference to FIG. After completing the process in step 11B, the process moves to step 118.

In step 118, the recording mode is determined by checking whether RECMD is "1". In the current example, it is determined that the mode is recording (Y).

Proceeding to step 120, it is determined whether RUNEVT is "1". Since RUNEVT was previously set to "1" in step 112 (FIG. 8), the determination result is affirmative (Y
), and the process moves to step 122.

In step 122, it is determined whether TACT is "1". T
Since ACT was previously set to "1" in step 84, the 1 determination result is affirmative (Y), and the process moves to step 124. In this step 124, as shown in FIG. 4(A), duct presence data (with/without duct data TAC with LSB set to "°l") is stored next to the tone color data TCD. Then, in step 12B, RUN
After setting EVT to "O", the process moves to step 128.

The stave 12B stores key-on data KON or key-off data KOF in the performance data memory 28 in response to key operations on the keyboard, and then returns to the main routine shown in FIG.

After this, when the subroutine of FIG. 7 is entered again, step 90. ! 32.98 judgment results are all negative (N)
Therefore, the determination result on the 10th day is affirmative (Y), and the process moves to step 118 via step 1ift. The determination result at step 118 is positive (Y) as in the previous step, so the process moves to step 120 and the RUN
Since the EVT is "1", RUNEvT4t, first step 126 is "O", the determination result is negative (Y) and the process moves to step 128.

At step 128, as before, key-on data KON or key-off data KOF corresponding to the key operation on the keyboard is stored, and the process returns to the main routine shown in FIG.

After this, the same process as described above is repeated every time the subroutine shown in FIG. , key-off data KOF, vertical line mark data I, VM, and other performance data are stored.

By the way, if you turn on the fill-in switch or generate any key-on signal instead of turning on the start switch (this corresponds to the case in FIG. 2(B)), the fill-in flag FILLIN or any key-on flag ANYKEY is activated. 1°° is set. Therefore, the determination result at step 102 or 104 in FIG. 8 becomes affirmative (Y), and the process moves to step 130.

Step 13 (In l, set TACT to "0".

This is different from the case of turning on the start switch described above. After this, steps 110, 112.

After executing steps 114 in sequence, the process moves to step 10B in FIG.

Step 108. liG, 118, 120 are the mΔshih jiang [demi chum seven pattern suei] when the start switch is turned on.
When it is determined in step 122 whether TACT is "1", since TACT was previously set to "0" in step 130, the determination result becomes negative (N) and the process moves to step 132.

In step 132, as shown in FIG. 4A, ductless data (with/without ducting data TAC with LSB set to "O") is stored next to the tone color data TCD. Then, in step 126, RUNEVT is set to “
0" and then execute step 128. Note that each time step 128 is executed, the performance data corresponding to the key operation is stored in the performance data memory 2B, as in the case of turning on the start switch described above. .

The above-mentioned processing is mainly related to the recording mode, but the processing related to the playback mode is as follows.

In step 90, if it is determined whether PLYEVT is "1", the determination result is affirmative (Y), and step 1
Move to 4G. In this step 140, "l" is set in sycw"r. Then, in step 142, P
After setting LYEVT to "O", the process moves to step 144.

In step 144, it is determined whether data with ducts is included in the data stored in the performance data memory 26. If this determination result is affirmative (Y), move to step 14B,
Set the non-rhythm flag N0NRHY to "1".

Then, the process moves to step 98. Note that if the determination result in step 144 is negative (N), step 14
Proceed to step 98 without going through B.

In step 98, it is determined whether 5YCWT is "1". When step 140 is passed as described above, it is determined that the value is "1" (Y), so the process moves to step 100.

At step +00, step 102, 104, 10ft (8th
(Figure) are executed sequentially, but all judgment results are negative (
If the answer is N), the process returns to the subroutine shown in FIG. 7 and executes step 10.

In step 108, it is determined whether RHYRUN is "l", but if all the determination results in step 100 are negative as described above, RHYRUN is "O", and the process returns to the main routine of FIG. do.

When the start switch is turned on while the synchronization wait state continues after the playback start event occurs as described above, "1" is set in 5TARTSW.

Therefore, in the same manner as described above regarding the recording mode, the determination result at step 106 in FIG. 8 becomes affirmative (Y), and steps 110, 112, and 114 are sequentially executed. As a result, RHYRUN and RUNEVT both become "1" and 5YCWT becomes "O" (synchronization wait state released).

Next, in step 108 of FIG.
When it is determined whether is “l”, it is “1”, so step 1
Move to 1B. In this step 11B, pattern data and the like are read out from the rhythm data memory 24 to RHYREG to enable generation of rhythm sounds by the above-mentioned interwoven, which will be described in detail with reference to FIG. 9 later. After this, the process moves to step 118.

In step 11B, it is determined whether RECMD is "I 11". In the present example, since the mode is playback mode, the determination result is negative (N) and the process moves to step 148.

In step 14, the playback mode flag FLYMD is set to °
Determine whether it is “1”. Since this determination result is affirmative (Y), the process moves to step 150.

At step 150, performance data is read from the performance data memory 2B and supplied to the musical tone forming circuit 32 to control musical tone generation. As a result, reproduction of the keyboard performance is started. When step 150 is completed, the process returns to the main routine of FIG.

After this, the subroutine shown in FIG. 7 is entered again.

The determination results of steps 90, 92, and 98 are both negative (N), and the determination result of step 108 is positive (Y
), and then step 11 via step 11B.
Moving on to step 8, the result of this judgment is the same as last time, because the answer is Bichukan (N), so Su ÷ 1. In step 148, it is determined that the reproduction mode is in effect (Y) as in the previous time, so the process moves to step 150. In step 150, as in the previous step, performance data is read from the performance data memory 2θ and supplied to the musical tone forming circuit 32 to control musical tone generation.

Then, the process returns to the main routine shown in FIG.

Thereafter, the same processing as described above is repeated each time the subroutine shown in FIG. 7 is entered, and the keyboard performance reproduction proceeds based on the data stored in the performance data memory 2B.

Note that if the recording switch is turned off after recording has started, or if the playback switch is turned off after playback has started, interwoven is prohibited at step 72 in FIG. 5, so rhythm sound generation is stopped, and step 118 in FIG. Since the determination results of 148 and 148 are both negative (N), recording or reproduction is stopped.

Subroutine for reading rhythm data (FIG. 9) Next, the subroutine for reading rhythm data will be explained with reference to FIG.

First, in step 160, the first tempo counter TC
It is determined whether the count values of NT and the second tempo counter 0TCNT are equal. The count value of TCNT increases by 1 when entering the interwoven routine shown in FIG. This is a determination of whether the timing is other than immediately after.

If the result of this determination is that the timing is other than immediately after interwoven (Y), the process returns to the subroutine of FIG. 7 without performing the processing described later.

On the other hand, the determination result in step 180 is negative (N).
If so, the timing is immediately after interwoven, so the process moves to step 162. In this step 1B2, T
It is determined whether the count value of CNT is larger than that of 0TCNT. The count value of TCNT changes from 31 to 0 at the end of each bar, and is smaller than the count value 31 of 0TCNT, so the determination in step 1B2 is, in other words, a determination of whether the timing is other than the end of a bar. As a result of this determination, if the timing is other than the end of the measure (Y), step 16
4, the bar event flag BEVT is set to "0".

Next, the process moves to step 18B, and the count value of TCNT is set to 0TCNT. As a result, the count value of 0TCNT becomes equal to that of TCNT. After this, the process moves to step 188.

In step 188, it is determined whether TACT is "1". Here, it is determined that TACT is "1" (Y) when the start switch is turned on in the recording mode (as shown in FIG. 2 (A)). ), and if it is determined like this,
Proceed to step 170.

In step 170, duct pattern data for one sound generation timing is read out from the rhythm data memory 24 based on the count value of TCNT and transferred to RHYREG.

If the duct pattern data at this time instructs a specific percussion instrument sound source to produce sound, a duct sound is generated from the speaker 44 through the next interwoven process. When the processing of the stave 270 is completed, the process returns to the subroutine shown in FIG. Note that by executing step 170 every time the subroutine shown in FIG.
It is possible to generate duct sounds at each diacritic timing.

If the determination result in step 168 is negative (N), the process moves to step 172. In this step 172,
Determine whether N0NRHY is "l". Here, N0NRH
Y is determined to be "l" (Y) when data with a duct is detected from the stored data in the playback mode and the start switch is turned on (corresponding to Fig. 3 (A)).
If it is determined in this way, the process moves to step 174.

In step 174, data RHYR of all pits 0''' is
Transfer to EG. If all bits of RHYREG are set to "°0" in this way, no rhythm sound will be generated when the next interwoven is applied. After completing the process of step 174, the process returns to the subroutine shown in FIG. 7. Note that FIG. By executing step 174 each time the subroutine is entered, the rhythmless state described above can be continued.

If the determination result in step 172 is negative (N), the process moves to step 176. In this step 17B,
Determine whether the fill flag FILLIN is "l". Here, it is determined that FILLIN is "1" (Y) when the fill-in switch is turned on in the recording mode or the reproduction mode, and when it is determined in this way, the process moves to step 178.

In step 178, the rhythm type is selected.
Based on the rhythm type data and the count value of TCNT, fill-in rhythm pattern data for one sound generation timing regarding the selected rhythm type is read out from the rhythm data memory 24 and transferred to RHYREG. If the fill-in rhythm pattern data at this time instructs the sound generation of one or more percussion instrument sound sources, the percussion instrument sound of the percussion instrument sound source whose fingers are left out is generated from the speaker 44 by the next interwoven process. When the processing of step 17 is completed, the process returns to the subroutine shown in FIG. In addition,
By executing step 17B each time the subroutine of FIG. 9 is entered, it is possible to perform a fill-in rhythm as described above with respect to FIG. 2(B), for example.

If the determination result in step 17B is negative (N), the process moves to step 180. In this step 180,
Based on the rhythm type data in RHYSEL and the count value of TCNT, normal rhythm pattern data for one sound generation timing regarding the selected rhythm type is read out from the rhythm data memory 24 and transferred to RHYREG.

If the normal rhythm pattern data at this time instructs the sound generation of one or more percussion instrument sound sources, the percussion instrument sounds of the instructed percussion instrument sound sources are generated from the speaker 44 through the first interwoven process. When the process of step 180 is completed, the process returns to the subroutine shown in FIG. In addition,
By executing step 180 each time the subroutine of FIG. 9 is entered, it is possible to perform a normal rhythm as described above with respect to FIG. 2 or 3.

When the determination result in step 162 is negative (N), the timing is at the end of the bar, so the process moves to step 182, and the bar event flag BEVT is set to "l". When BEVT is set to "1" after the start of performance recording, vertical line mark data VLM is written in the performance data memory 26 based on this, and is used to know the number of bars.

Next, in step 184, TACT is set to "0" and N0NRHY is set to "0". As a result, in the recording mode, the duct sounding period ends in one measure, and in the playback mode, the no-rhythm period ends in one measure. It ends with.

Note that in the above embodiment, the keyboard performance sounds are produced by one sound system during recording or playback, but one
For example, a plurality of sound systems corresponding to the left and right sides may be provided, as well as a plurality of recording/playback systems, and one recording/playback system and the sound system for the right side may be used to produce keyboard performance sounds, while the other recording/playback system and the sound system for the left A sound system may be used to generate accompaniment sounds such as chords. In this way, a stereo effect can be obtained, and
You can play the accompaniment sounds while playing the keyboard.

〔Effect of the invention〕

As described above, according to the present invention, since the rhythm sound generation is started after a certain period of delay from the start of recording or playback, the rhythm accompaniment may cause an unnatural sound when recording or playing back a song with a low onset. This has the effect of eliminating the need to give

Furthermore, if the duct sound is generated for a certain period of time before the rhythm starts during recording, it is possible to smoothly perform the keyboard performance in time with the duct sound.

Furthermore, during recording, information indicating that an operator (start switch in this embodiment) has been operated is recorded together with performance information, and during playback, a rhythm sound is generated with a certain period of delay only when the information indicating that an operator has been operated is detected. By starting the rhythm sound generation automatically at the same time as playback starts when no information indicating the operation is detected (that is, when recording is started in response to another operation). It is very convenient.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing the circuit configuration of an automatic performance device according to an embodiment of the present invention, FIG. 2 (A) and CB) are time charts for explaining the operation of the recording mode, and FIG. A) and (B) are time charts for explaining the operation of the playback mode, Figures 4 (A) to (G) are format diagrams of stored data in the performance data memory, and Figure 5 is a diagram of the main routine. Flowchart showing processing; FIG. 6 is a flowchart showing an interwoven routine for rhythm sound generation; FIG. 7 is a flowchart showing an auto play subroutine; FIG. 8 is a flowchart showing a start control subroutine. FIG. 9 is a flowchart showing a subroutine for reading rhythm data. 10---Bus, 12---Single key switch circuit, 14
---One note selection switch circuit, 1G-111 rhythm control switch circuit, 18--1 central processing unit, 20--
--Program memory, 22---Working memory, 24---Rhythm data memory, 2B---One performance data memory, 28---Performance recording/playback control switch circuit, 32---One musical tone Formation circuit, 34---tempo oscillator, 3B---rhythm sound source circuit.

Claims (1)

[Claims] 1. (a) a keyboard; (b) musical tone generating means for generating musical tone signals based on key operation information from the keyboard; and (c) performance in response to key operations on the keyboard. a recording/reproducing means for recording or reproducing information; (d) an operator; (e) an autorhythm device for automatically generating rhythm sounds; and (f) controlling the recording/reproducing means and the autorhythm device. The control means starts generating the rhythm sound after a certain period of time has elapsed after starting recording in response to the operation of the operator during recording, and starts generating the rhythm sound in response to the operation of the operator during playback. An automatic performance device comprising: a device that starts generating the rhythm sound after a certain period of time has elapsed after starting playback in response to an operation. 2. The automatic performance device according to claim 1, wherein the control means causes the autorhythm device to generate a duct sound during the certain period of time during recording. Automatic performance device. 3. In the automatic performance device according to claim 1, the control means records operation information along with the performance information according to the operation of the operator during recording, and records the operation information together with the performance information during playback. The automatic performance device is characterized in that, on the condition that the operation information is detected, the generation of the rhythm sound is started after the predetermined period of time has elapsed.