JP2556640C - - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic performance device, and more particularly, to fast forward control of an automatic performance. 2. Description of the Related Art Conventionally, an automatic performance device generally has the following configuration. That is, musical tone
Combination of information and time information is stored in the sequence memory
Read the combination of information and time information. On the other hand, a time counter that tracks the progress of time
A clock signal having a constant frequency is sent to the time counter. And this
The time count value of the time counter, and the read tone information and time information.
Compare the time information of the combination with
If possible, a process based on the tone information of the combination of the tone information and the time information, for example,
Performs sound / silence processing. Further, after this processing, the set of the next tone information and time information is set.
The combination is read out and the above processing is repeated. Here, there are conventionally two types of devices for performing such fast forward of an automatic performance as described below. First, as shown in FIG. 9, a normal low frequency clock signal is
A low-speed clock generator 91 that oscillates and outputs a high-frequency clock signal
And a high-speed clock generator 92 that outputs the clock. And these low frequency
The lock signal and the high frequency clock signal are connected to the bus line via the switching circuit 93.
Then, the data is sent to the time counter 94. In the switching circuit 93, a fast-forward instruction is issued.
The high-frequency clock signal is selected when there is a
The lock signal is selected. Thus, if there is a fast-forward instruction, the time counter 9
4 is incremented at a high speed, so that the automatic performance progresses faster. As shown in FIG. 10, the clock output from the clock generator 95
The lock signal is input to a frequency divider 96, and a normal low frequency clock signal and a high frequency clock signal are input.
To a signal. Then, these low frequency clock signal and high frequency clock signal
Is transmitted to the time counter 94 via the switching circuit 97 and the bus line.
Embed. The switching circuit 97 selects a high-frequency clock signal when a fast-forward instruction is given.
Is selected and a low-frequency clock signal is selected when there is no instruction for fast-forward. This
Similarly, if there is a fast-forward instruction, the time counter 94 is incremented at a high speed.
As a result, the automatic performance progresses faster. However, in the above two devices, in addition to a normal low frequency clock signal,
A harmonic clock signal must also be output, and a plurality of clock generators 91,
92 or a frequency divider 96 are required, which complicates the circuit configuration and increases the cost.
Was the cause. The present invention has been made to solve the above-described problem, and has been made in consideration of a high-frequency clock.
No need for a circuit that generates a
It is an object of the present invention to provide an automatic performance device capable of fast-forwarding. [0007] In order to achieve the above object, the present invention provides a method for generating progress time data indicating time progress.
Is converted to a larger conversion time data value, and automatic performance is performed according to this data.
It was done. The conversion is performed, for example, at the time of the conversion in accordance with the progress time data.
Data is stored and read out or the change of the progress time data is stored.
Perform calculations to increase the rate, or record the progress time data during normal performance.
Convert to a smaller value, or convert time information in automatic performance information to a smaller value
Or to do. That is, the present invention relates to the time information in the automatic performance information.
Thus, the change rate of the progress time data is relatively increased. [0008] Thus, only by converting the time information of the progress time data or the automatic performance information,
This eliminates the need for a circuit for generating a high-frequency clock signal, thus simplifying the circuit configuration.
Can be pulled. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Overall Circuit FIG. 1 shows the overall circuit of an automatic performance device for an automatic performance piano. Panel switch group
In step 1, an automatic performance control instruction, which will be described later, is performed. This panel switch group 1
Key data indicating the operation contents of each key is temporarily stored in the input / output interface 2.
Is given to the CPU 5 via the bus line 3 to execute a process corresponding to the operation key.
Is done. The key data has the same number of bits as the number of keys of the panel switch group 1, for example.
And the bit corresponding to the operation key becomes “1”. This panel switch group 1
Even if a high-level signal is output from the voltage source through the on-key,
A key scan may be performed by a switching signal. Via the bus line 3
Data, information, address data, etc. are sent. The display 4 receives display data sent from the CPU 5 or the like via the bus line 3 and the input / output interface 2 to perform display. This display data
The data includes the operation contents of the panel switch group 1, the processing contents of the CPU 5, the performance time, and the like.
Is shown. The floppy disk 8 stores automatic performance information API.
The automatic performance information API of each song or all songs, the floppy disk driver 9
To the RAM 6 through the input / output interface 2 and the bus line 3
And an automatic performance is performed. Conversely, the automatic performance information API in the RAM 6 is
The data may be saved on the floppy disk 8. The floppy disk 8
An M / ROM card, a magnetic tape, a magnetic disk, an optical disk, or the like can be used instead. The RAM 6 stores various data processed by the CPU 5 in addition to the automatic performance information API.
Data is also stored. A time counter 10 is also formed in the RAM 6.
This time counter 10 is a clock generated by a clock generator 11.
Incremented according to the signal φ, and the progress time data PT is counted.
. That is, the clock signal φ is supplied to the CPU 5, and the clock signal φ
Each time it reaches the bell, an interrupt process, described later, is executed.
The counter 10 is incremented by one. The time counter 10 is connected to a clock generator 11 to directly
The value may be incremented according to the lock signal φ. This clock
The frequency of the clock signal φ from the generator 11 is constant. But the Panels
It is also possible to make it correspond to the tempo data set in switch group 1.
is there. According to this, the speed of normal automatic performance and the speed of fast forward of automatic performance are also set.
It changes according to the tempo. The ROM 7 has a program corresponding to a flowchart described later and executed by the CPU 5.
Programs and programs corresponding to other processes are stored. In this ROM7
Also includes an enlarged conversion time table 12a and a normal conversion time table 12b.
I have. The enlarged conversion time table 12a stores the progress time data of the time counter 10 described above.
A large number of enlarged conversion time data ECT obtained by converting the data PT to a larger value are stored. In the normal automatic performance, the progress time data PT of the time counter 10 is normally converted.
It is executed based on the normal conversion time data NCT converted by the time table 12b.
However, the fast-forward of the automatic performance is performed by adding the progress time data PT to the enlarged conversion time table 12.
This is executed based on the enlarged conversion time data ECT converted in a. The solenoid 14 is provided below each key and each pedal of the automatic performance piano.
When the solenoids 14 are activated, the keys and pedals of the piano are turned on, and the solenoids are turned on.
When the id 14 stops, the key and the pedal are turned off. Automatic performance in the RAM 6
The performance information API is read by the CPU 5 and sent to the solenoid driver 13.
Then, the solenoid 14 is driven / stopped. This allows automatic performance of the piano
A performance is performed. The panel switch group 1 includes a rewind key 21, a play key 22, a forward key
A record key 23, a record key 24, and a stop key 25 are provided. Liwa
The Indian key 21 is a key for instructing fast rewind of automatic performance. Play key 22
Is a key for instructing a normal automatic performance. The forward key 23 is used to
It is a key for instructing feeding. The record key 24 points to recording of the automatic performance information API.
Key to show. The stop key 25 is a key for instructing the stop of the automatic performance.
. The panel switch group 1 includes a load key, a save key, and a
A work key is also provided. The load key is the automatic performance of the floppy disk 8.
A key for instructing the loading of the information API into the RAM 6, and a save key for the RAM 6.
Key for instructing the automatic performance information API 6 to be saved to the floppy disk 8.
You. In addition, the panel switch group 1 includes keys for setting the tempo,
Key group and the like are also provided. [0017] 2. FIG. 2 shows the automatic performance information API stored in the floppy disk 8 or the RAM 6. Automatic performance information API includes header HD, music information MI and
And a plurality of combinations of time information TI. The music information MI is further
Number data KN and touch data TC. Header HD is for one set
This is identification data of the musical sound information MI and the time information TI. The key number data KN is number data indicating each key of a keyboard of an automatic performance piano.
Yes, indicating pitch. This key number data KN includes key-on (“1”),
It also includes data indicating key-off ("0"). This key number data KN
Alternatively, data indicating on / off of each pedal may be stored. Touch day
The TC is also called velocity data, and is the strength or speed of the key on / off.
Is the data indicating The time information TI is a timing at which the tone information MI is executed.
Is information indicating These tone information MI and time information TI are stored in a floppy
It is stored on the disk 8. Further, some reference time information ST is also stored in the automatic performance information API.
You. As shown in the lower part of FIG. 8, the reference time information ST includes a reference “0” of the time information TI.
And the time information TI indicates the elapsed time from this point.
That is, the time information TI indicates not the relative time but the absolute time. Reference time information ST
Can be replaced with bar mark data. The bar mark data is
Indicates a break. The reference time information ST is stored at predetermined time intervals, for example,
Read out and executed every 500 ms.
You. At this time, the time counter 10 is cleared to "0" and the performance time data is +
0.5. The reference time information ST includes a header HD, three dummy data,
Consists of This header HD indicates that it is the reference time information ST.
. The data format of the header HD of the reference time information ST is the header of the tone information MI.
-Differs from HD data format. The automatic performance information API further includes song name data,
Song number data, tempo data, bit data, effect data, and the like can also be included. [0021] 3. RAM 6 FIG. 3 shows various registers in the RAM 6. That is, the RAM 6
Flag register 31, sequence buffer register 32, conversion time register 3
3. The address point register 34 and the above-described time counter 10 are formed.
You. The mode flag register 31 stores the rewind key 21 and the play key 22
, Forward key 23, record key 24, and stop key 25
Lag data is stored. This flag data is stored in the video corresponding to each of the keys 21 to 25.
It is "1" set in the bit. The sequence buffer register 32 sequentially reads out the automatic performance information API.
The set of musical tone information MI and time information TI are temporarily stored. Conversion time register
The data 33 includes enlarged conversion time data ECT or normal conversion time data NC described later.
T is stored. The address point register 34 stores the automatic performance information in the RAM 6.
Address data AD indicating the access address of the report API is stored. [0023] 4. Enlarged Conversion Time Table 12a FIG. 4 shows the enlarged conversion time table 12a of the ROM 7. Enlargement conversion time
“0000”, “0001”, “0002”, “0003”... Of the cable 12a.
Address “0010” is expanded to “09”, “19”, “29”, “39”.
Large conversion time data ECT is stored. These "0000", "0001",
The address data of “0002”... “0010” corresponds to the progress time data PT.
The progress time data PT is larger in the expanded conversion time table 12a.
"09", "19", "29" ...
It is converted to the enlarged conversion time data ECT of “100”. At the time of fast forward of the automatic performance, the time information TI of the automatic performance information API indicates the enlarged conversion time.
The automatic performance is performed by comparing the data with the data ECT. At the time of the normal automatic performance, the time information TI is compared with the later-described normal conversion time data NCT to perform the automatic performance. What
Note that the expanded conversion time data ECT of the expanded conversion time table 12a is as described above.
Without limitation, for example, "08", "16", "24", "32", "10",
"18", "26", "34", "42", etc. In addition, the enlarged conversion time
The data ECT takes a value from “00” to “100”, but the reference time information ST is “10”.
If stored at intervals other than 0 ", values outside this range can be taken.
, And 12 or more and 10 or less expanded conversion time data ECT are automatically transferred to the automatic performance information API.
May be stored. [0025] 5. Normal Conversion Time Table 12b FIG. 5 shows the normal conversion time table 12b in the ROM 7. Normal conversion time table
"0000", "0001", "0002", "0003" ... "01"
At the address "00", the normal change of "00", "01", "02", "03" ... "100"
Replacement time data NCT is stored. These “0000”, “0001”, “0”
002 "..." 0100 "address data corresponds to the progress time data PT.
The progress time data PT is stored in the normal conversion time table 12b.
It is converted to conversion time data NCT. In the example of FIG. 5, the normal conversion time data NCT is equal to the progress time data PT,
The normal conversion time table 12b is not used, and the progress time data PT is used as it is during normal conversion.
It can be used as inter-data NCT. However, the normal conversion time data shown in FIG.
When the value of the data NCT is changed with respect to the progress time data PT, the normal conversion is performed.
The time table 12b is required. For example, "01", "02", "03", "
04, 05, 06,..., 10, 11,.
Then, for example, “00”, “00”, “01”, “01”, “02”, “02”
.., “05”, “05”... Normal conversion time data NCT, “02”, “04”, “
06, "08", "10", "12" ... "20", "22" ... normal conversion time
For example, the data is converted into data NCT. The normal conversion time data NCT is smaller than the progress time data PT.
The expanded conversion time data ECT is used as the progress time data PT.
As it is or converted to a value close to the progress time data PT
Is also good. In this case, if the frequency of the clock signal φ is increased,
Can be switched between automatic performance and fast forward of automatic performance. [0028] 6. FIG. 6 shows a flowchart of an interrupt process executed by the CPU 5.
You. In this process, the progress time data PT of the time counter 10 is sequentially incremented.
(Step 12), if the automatic performance is fast-forwarding, the progress time data PT
It is converted to the enlarged conversion time data ECT (step 15), and during normal automatic performance
For example, the progress time data PT is converted into the normal conversion time data NCT (step 19).
). This processing is performed by the clock supplied from the clock generator 11 to the CPU 5.
It is executed every time the clock signal φ becomes high level. In this process, it is first determined whether or not an automatic performance is being performed (step 11). This size
Another example is the play key 22 or the forward key 23 in the mode flag register 31.
Is performed based on whether or not the corresponding bit of “1” is “1”. Next, the time counter 10
Is incremented by 1 (step 12), and it is determined whether or not the forward key 23 has been turned on.
(Step 13). This determination is made by the forward flag in the mode flag register 31.
This is performed based on whether the corresponding bit of the key 23 is “1”. If the forward key 23 is turned on, the progress time data of the time counter 10
The PT is read out (step 14), and the enlargement conversion is performed using the enlargement conversion time table 12a.
Converted to time data ECT (step 15) and set in conversion time register 33
Is performed (step 16). Thereby, the progress time data P of the time counter 10
T is incremented by one for each interrupt processing, and the progress time data PT is (10 times + 9)
Expanded to size. In step 13, if the play key 22 is turned on, the time
The progress time data PT of the counter 10 is read (step 18), and the normal conversion time data PT is read.
Is converted to normal conversion time data NCT by the cable 12b (step 19).
It is set in the time register 33 (step 16), and other processing is executed (
Step 20), returning to the original process. Thereby, the time counter 10
Is incremented by one for each interrupt processing, and the progress time data PT
Is not expanded, and is processed as is. Here, the flow of the rewind key 21 of the mode flag register 31 in step 13 is executed.
The lag data determination process is performed by selecting the enlarged conversion time table 12a or by performing the normal conversion.
Select the interval table 12b, that is, expand conversion time data ECT and normal conversion
It serves to switch and select the time data NCT. In step 19, the progress time data PT is stored in the normal conversion time table 12.
In b, the progress time data PT is not converted to the normal conversion time data NCT, but is converted as it is.
It may be set in the time register 33. In step 15, the progress time data PT is stored in the enlarged conversion time table 1.
Instead of performing the conversion in 2a, the progress time data PT has a value of “1” or more, for example, “9”.
”, And each time the clock signal φ goes high,
The value PT may be +9. Then, the enlarged conversion time table 12a becomes unnecessary.
You. Further, the normal conversion time data NCT stored in the normal conversion time table 12 b
Is a value that makes the progress time data PT smaller, for example, "1"
/ 9 ”, or in step 19, the progress time data PT is set to“ 1 ”.
, For example, “1/9”, and the clock signal φ is at a high level.
Each time the number of times is reached, "1/9" may be added to the progress time data PT. When calculating such progress time data PT, the time is calculated in step 01 described later.
The counter 10 may not be cleared. [0036] 7. FIG. 7 shows a flowchart of the automatic performance processing executed by the CPU 5.
In this process, the automatic performance information API is read (steps 06 and 02),
When the time information ST is read, the process waits (steps 03 and 04), and sets the tone information MI and
If the time information TI is read, an event is generated at a timing corresponding to the time information TI.
Is executed (steps 07 and 08). In this case, the expansion conversion time in step 07
Since the data ECT is usually enlarged more than the conversion time data NCT,
The event runs as fast as possible. This processing is performed in the key processing in the main routine.
Alternatively, the operation is started by turning on the forward key 23. The main routine is power
Key processing is turned on, and key processing is repeated after initialization processing.
Is done. In the initialization processing, the RAM 6, the input / output interface 2, and the
Clearing of all data in the solenoid driver 13 is performed. In this case, the automatic performance information
If the start address of the load destination of the report API into the RAM 6 is not "00 ... 0", the RAM
6 of the address point register 34 is the same as the start address.
The same value. First, when the play key 22 is turned on, an initialization process is performed (step
01). In this initialization process, the time counter 10 of the RAM 6 is changed.
The switching time register 33, the mode flag register 31, etc. are cleared, and the mode flag
Flag data of "1" is set in the corresponding bit of the play key 22 of the register 31, etc.
Is done. Further, even if the forward key 23 is turned on, the initialization process is performed (
Step 01). In this initialization processing, the time counter 10, the conversion time register 33, the mode flag register 31 and the like are cleared, and the mode flag register
The flag data of “1” is set in the corresponding bit of the forward key 23 of the
It is. The time counter 10 is provided to the CPU 5 from the clock generator 11.
Each time the obtained clock signal φ becomes high level, it is incremented by one. This +1 is above
This is performed as one of the interrupt processing. Next, the address specified by the address data AD of the address point register 34 is
The information of the automatic performance information API in the RAM 6 is read out, and the sequence buffer
It is set in the register 32 (step 02). Here, the reference time information ST is read.
If it is issued (step 03), the expanded conversion time data ECT or the normal conversion
Until the replacement time data NCT becomes “100”, that is, according to the reference time information ST.
It waits until the same timing is reached (step 04). Enlarged conversion time data E
CT or the normal conversion time data NCT is stored in the conversion time register
33 is set. If the conversion time data ECT, NCT becomes "100"
, The time counter 10 is cleared (step 05), and the performance time data is set to +0.
5, the address point register 34 is incremented by +4 (step 06). In step 02, if the tone information MI and the time information TI are read out,
, The time information TI and the expanded conversion time data ECT or the normal conversion time data.
Is compared with the data NCT (step 07). Conversion time data ECT, NCT
If it is still smaller, just wait. Time elapses and conversion time data ECT
, NCT become equal to or greater than the time information TI,
An event corresponding to the sound information MI is executed (step 08). And
, The address point register 34 is incremented by 4 (step 06). In this case, if the forward key 23 has been turned on,
The progress time data PT of the timer 10 is expanded to (10 times + 9).
Therefore, in step 07, when the enlarged conversion time data ECT is the automatic performance information API,
The time required to exceed the interim information TI is shortened, and the next event is advanced earlier. Thus, even if the frequency of the clock signal φ is not increased,
You can fast-forward your performance. The above-described event execution processing does not involve driving a key or a pedal, but simply
Preparation for reading out the data, accumulation of performance time data, and the like. Drive keys and pedals
Is performed in a reproduction process in step 10 described later. This playback process is fast forward for automatic performance
At other times, it is not executed. Therefore, the fast forward of the automatic performance proceeds without sound. Fast forward
This is because the drive of the solenoid 14 does not follow the fast-forward of the automatic performance at the time of resumption.
Of course, the process of step 09 is omitted, and the key or pedal is driven at the time of fast forward of the automatic performance.
Action may be taken. In step 07, the time information TI and the normal conversion time data NCT are
Are compared, the normal conversion time data NCT has the same value as the progress time data PT.
Therefore, in step 07, the normal conversion time data NCT is stored in the automatic performance information API.
Time exceeding the time information TI is not shortened, and a normal automatic performance is performed.
. After step 06, it is determined whether or not the forward key 23 has been turned on.
(Step 09). This determination is based on the forward key in the mode flag register 31.
This is performed based on whether or not the corresponding bit of 23 is “1”. Forward key 23 is off
If so, the process returns to step 02, and the automatic performance process is repeated. In step 09, if the play key 22 is turned on, the reproduction process
It is executed (Step 10). This reproduction process is performed by the key number of the music information MI.
To the input line of the solenoid driver 13 corresponding to the touch data TC.
This is the process of sending the same data. As a result, the key corresponding to the key number data KN is stored.
Alternatively, the pedal is driven at a speed or intensity corresponding to the touch data TC. In the above-described automatic performance processing, when the stop key 25 is turned on, the reading of the program corresponding to the automatic performance processing is unconditionally stopped, and the processing ends. Note that
Sequence buffer register 32 and address point register 34
Is turned on, the play key 22, the forward key 23, the rewind key 2
1. If the stop key 25 is turned on, it is not cleared. Of course, these keys 21,
It may be cleared by turning on 22, 23 and 25. Then, these keys 21,
The processing corresponding to the operations 22, 23 and 25 is executed from the beginning or end of the music. Further, the following processing is executed between the above-mentioned steps 03 and 07
Is also good. That is, as in step 09, the on / off of the forward key 23 is determined.
If the forward key 23 is turned on, the
If the time information TI is converted to a smaller value and the play key 22 is turned on,
Proceed to step 07 without doing anything. The conversion of the time information TI has the same configuration as that of the enlarged conversion time table 12a.
Alternatively, a memory storing a value obtained by reducing the time information TI may be used.
The information TI may be multiplied by a value equal to or less than “1”, for example, “1/9”. Even in this case,
Similarly, fast-forwarding of the automatic performance can be performed. Note that the play key 22 is turned off.
If it is, the time information TI is converted by the normal conversion time table 12b and
The process may proceed to step 07. The automatic performance process of FIG. 7 is repeatedly executed until the stop key 25 is turned on.
You. However, only when the forward key 23 or the play key 22 is turned on,
7 is performed, and if “NO” in the step 07, the process may return to the next process.
No. In this case, after Step 16 of the above-described interrupt processing, Step 02 is performed.
Then, the processing of steps 02 to 10 is performed, and “NO” is determined in step 07 of the processing.
If so, the process returns to the original process. The automatic performance process shown in FIG. 7 can be executed with the following contents. Up
If "NO" in step 07, the processes of steps 13 to 16 and 18 to 19 of the interrupt process in FIG. 6 are performed, and the process returns to step 07. Then interrupt
No processing is required. However, the increment of the time counter 10 in step 12 is performed.
Only processing is required. [0052] 7. Example of Fast Forward of Automatic Performance FIG. 8 shows an example of fast forward of automatic performance. In the figure, “e1”, “e2”.
, Music information MI, and “ST” indicates reference time information ST. Now, music
The information MI and the reference time information ST are stored in an absolute time format as shown in the lower part of FIG.
Have been. The tone information MI of “e1”, “e2”, and “e3” in FIG.
It is assumed that the performance is executed and the forward key 23 is turned on at the point A. Then, all the data sent to the solenoid driver 13 is cleared.
, Key and pedal are turned off, and the conversion time register 33 and the time counter 10
It is cleared (step 01). At this time, the musical tone information MI of “e4” is
It is set in the buffer register 32 and waits for the execution timing. The progress time data PT of the time counter 10 cleared to “00” is
Is converted to the expanded conversion time data ECT of “09” in the expanded conversion time table 12a.
(Step 15). Then, the time information TI of “e4” is “8” (
Step 07), the tone information MI of "e4" is immediately executed (step 08),
The next tone information MI and time information TI of "e5" are read (step 02).
. Since the time information TI of "e5" is "9" (step 07), the time information TI
The tone information MI of "e5" is also executed (step 08). Thus, "e4
Next, when the progress time data PT of the time counter 10 becomes “01”, the musical tone information MI of “e5” is successively executed.
The row time data PT is an enlarged conversion time data of "19" in the enlarged conversion time table 12a.
Is converted to the data ECT (step 15). Then, similarly, the tone information MI of "e6", "e7", "e8", and "e9" is successively executed (steps 07 and 0).
8, 06, 02). Thus, even if the frequency of the clock signal φ is not increased,
You can fast-forward a dynamic performance. Next, it is assumed that the play key 22 is turned on at the point B in FIG. Then, Soleno
All data sent to the guide driver 13 is cleared, and the keys and pedals are turned off.
And the conversion time register 33 and the time counter 10 are cleared.
Step 01). At this time, the tone information MI of “e10” is stored in the sequence buffer register.
It is set in the master 32 and waits for the execution timing. The progress time data PT of the time counter 10 is cleared to “00”.
The sequence buffer register 32 stores the time information T of “21” of “e10”.
Since I is set, until the progress time data PT becomes "21",
The sound information MI is not executed. When the progress time data PT becomes "21" (step
Step 07), the tone information MI of "e10" is executed (step 08), and the next "e10"
The music information MI and the time information TI of 11 ″ are read (step 02).
Thereafter, normal automatic performance is continued. In the example of FIG. 8, the automatic performance is not fast forwarded beyond the reference time information ST,
The fast forward of the automatic performance is performed over the reference time information ST.
It is, of course, possible. The fast-forward of such an automatic performance is stored in the absolute time system shown in the lower part of FIG.
It can be executed only for the automatic performance information API. However, in the upper part of FIG.
As for the automatic performance information API stored in the relative time system,
There's nothing you can't do. In this case, the time information TI of the relative time method is obtained in step 02.
Is accumulated each time data is read out, the accumulated time information TI and the expanded conversion time data E
CT or the normal conversion time data NCT will be compared in step 07.
You. Then, the processing of steps 03 to 05 in FIG. 7 is omitted. The present invention is not limited to the above embodiments, but may be variously modified without departing from the spirit of the present invention.
It is possible. For example, the present invention can be applied to an electronic musical instrument. This place
In step 08, the tone information MI is executed in the tone generation
Or to the MIDI interface. Also, the floppy disk 8
The automatic performance information API is detected by a key sensor by a key operation of the automatic performance piano.
Data stored in the memory or data input by a computer.
No. Further, in converting the progress time data PT in the steps 15 and 19,
The conversion may be performed based on a specific arithmetic expression. This operation expression is, for example, ECT = a (
PT) ± b, a (PT) 2 ± b, b / {a (PT)} (a, b: constant, PT: hexadecimal
Row time data, ECT: enlarged conversion time data). In addition, automatic performance information
The API is a RAM / ROM card other than the floppy disk 8 and the RAM 6,
The information may be stored on a magnetic tape, a magnetic disk, an optical disk, or the like. As described in detail above, according to the present invention, the progress time data indicating the progress of time is
Converted to a conversion time data value, and an automatic performance is performed according to this data.
It is. This conversion is performed, for example, in correspondence with the conversion time data.
Data and read it out or change the rate of change of the above-mentioned progress time data.
Perform calculations that increase the time, or reduce the progress time data during normal performance.
To a smaller value, or to convert the time information in the automatic performance information to a smaller value.
It is to be. Therefore, the time information of the progress time data or the automatic performance information is converted.
And a circuit for generating a high-frequency clock signal is not required. As a result,
This has the advantage that the circuit configuration can be simplified.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall circuit diagram of an automatic performance piano. FIG. 2 shows automatic performance information AP stored in a floppy disk 8 or a RAM 6.
FIG. FIG. 3 is a diagram showing various registers of a RAM 6; FIG. 4 is a diagram showing an enlarged conversion time table 12a of a ROM 7; FIG. 5 is a diagram showing a normal conversion time table 12b of a ROM 7; FIG. 6 is a diagram showing a flowchart of an interrupt process. FIG. 7 is a diagram showing a flowchart of an automatic performance process. FIG. 8 is a diagram showing an example of fast forward of an automatic performance. FIG. 9 is a circuit diagram showing a conventional example. FIG. 10 is a circuit diagram showing a conventional example. [Description of Signs] 1 ... Panel switch group, 5 ... CPU, 6 ... RAM, 7 ... ROM, 8 ... Floppy disk, 10 ... Time counter, 11 ... Clock generator, 12a ... Enlarged conversion time table, 12b ... Normal conversion time Table, 14 ... solenoid, 21
... Rewind key, 22 play key, 23 forward key, 24 record key, 25 stop key, 31 mode flag register, 32 sequence buffer register, 33 conversion time register, 34 address point register.

Claims (1)

Claims: 1. A storage means for storing a plurality of combinations of tone information and time information, and an information reading means for reading out combinations of tone information and time information from the storage means in the order of performance. An automatic performance device comprising: a time tick means for counting the progress of time; and time data conversion means for converting the progress time data engraved by the time tick means to a larger value when fast-forwarding an automatic performance. Switching selecting means for switching and selecting the conversion time data converted by the time information converting means and the progress time data engraved by the time notching means; Comparing means for comparing any of the time data with the time information read by the information reading means; And performing a process based on the musical tone information read out by the information readout unit in accordance with the comparison result of the above, thereby providing a fast sounding automatic performance or a normal automatic performance. Automatic performance device. 2. The time data conversion means includes: conversion data storage means for storing a conversion time data group obtained by converting the progress time data engraved by the time engraving means into a larger value; 2. The automatic performance apparatus according to claim 1, further comprising conversion data reading means for reading conversion time data corresponding to the progress time data engraved by said time tick means. 3. The automatic performance apparatus according to claim 1, wherein said time data conversion means performs an operation for increasing the rate of change of the progress time data carved by said time carving means. 4. An automatic performance comprising: storage means for storing a plurality of combinations of tone information and time information; and information reading means for reading out combinations of tone information and time information from the storage means in the order of performance. In the apparatus, time tick means for tickling the progress of time, and the progress time data carved by this time tick means, during normal automatic performance,
Time data converting means for converting to a smaller value; switching time means for switching and selecting conversion time data converted by the time data converting means; Means for comparing one of the conversion time data and the progress time data switched and selected by the means with the time information read by the information reading means; and reading the information in accordance with the comparison result of the comparing means. An automatic performance device for performing a process based on the musical tone information read by the means to perform a fast forward automatic performance or a normal automatic performance. 5. A conversion data storage means for storing a conversion time data group obtained by converting the progress time data engraved by the time notch means into a smaller value. 5. The automatic performance apparatus according to claim 4, further comprising conversion data reading means for reading conversion time data corresponding to the progress time data engraved by said time tick means. 6. The automatic performance apparatus according to claim 4, wherein said time data converting means converts the rate of change of the progress time data engraved by said time engraving means to a smaller value. 7. The automatic performance apparatus according to claim 1, wherein said tone processing means executes the tone information after the already executed tone information when fast-forwarding is instructed. 8. An automatic performance comprising storage means for storing a plurality of combinations of tone information and time information, and information reading means for reading out combinations of tone information and time information from the storage means in the order of performance. In the device, the time information read by the information reading means is detected by a fast-forward instruction.
Time information conversion means for converting to a smaller value at the time of fast-forwarding of an automatic performance according to the above, switching time information converted by the time information conversion means, and time information read by the information reading means. Switching selection means, time increment means for incrementing the time, and comparing one of the conversion time information and the time information switched and selected by the switching selection means with the progress time data engraved by the time increment means. By performing processing based on the musical sound information read by the information reading means in accordance with the presence / absence of a fast-forward instruction and the comparison result of the comparing means, the fast-forwarding of the automatic performance is performed silently or normally. An automatic performance device comprising: a tone processing means for performing an automatic performance of a sound with sound .