JP3119061B2 - Automatic performance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic performance device for performing an automatic performance based on performance information.

[0002]

2. Description of the Related Art Conventionally, some automatic performance devices such as sequencers have a function called "quantize". As shown in FIG. 11, this function adjusts the sounding timing of the input performance information to the just timing of the clock. By the way, the quantize function of a general automatic performance device automatically edits performance information from the beginning to the end of a song and then plays back the song after that. I couldn't adjust things.

On the other hand, according to Japanese Patent Application Laid-Open No. 3-282591, the quantization is realized in real time by setting the clock cycle for reproducing the performance information to be short near the beat timing and long otherwise. Techniques are disclosed. That is, the sounding timing of the original performance information is as shown on the horizontal axis of FIG. 12, but by controlling the clock cycle as described above, each sounding timing is controlled at the timing shown on the vertical axis of FIG. I do. This makes it possible to adjust the quantization strength and the like in real time while listening to the music. Also, conventionally, in the jazz performance, a playing technique called “swing” has been known. As shown in FIG. 6, the performance timing for a strong beat is maintained at the original timing, while the performance timing for a weak beat is slightly delayed.

[0004]

By the way, performance information is generally composed of a plurality of tracks, and by reproducing this, it is possible to perform an ensemble of various musical sounds. At this time, you may want to quantize only some of the tracks. However, according to the technique disclosed in Japanese Patent Application Laid-Open No. 3-282591, it is impossible to quantize only some of the tracks because the clock cycle itself is changed. In addition, there is an automatic performance device that automatically performs a swing on all of a plurality of tracks in the same manner, but it is not possible to independently perform a swing on each of the plurality of tracks. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and has as its object to provide an automatic performance device capable of precisely and in real time controlling the tone generation timing of musical tones.

[0005]

In order to solve the above-mentioned problems, a configuration according to a first aspect of the present invention comprises a performance information storage means for storing performance information including time data and sound generation data for a plurality of tracks, and controlling a sound generation timing. Setting means for setting control information for controlling sounding timing based on the sounding data corresponding to the track to be processed; reading means for sequentially reading each data constituting the performance information from the performance information storage means; Determining means for determining whether the read data is time data; and determining that the time data has been read by the reading means in the determining means, and the read time data is the processing target. In the case of a track, the sound data read out corresponding to the time data based on the time data and the control information. Calculating means for calculating the sound generation timing of the data, and characterized in that and a musical tone generating means for generating a musical tone based on the sound data corresponding to the sound generation timing with the advent of the computed sound generation timing.

According to a second aspect of the present invention, in the configuration of the first aspect, when the read time data does not correspond to the track to be processed, the calculation means may execute the time data. The sound generation timing of the sound generation data read corresponding to the time data is calculated based on the time data.

According to a third aspect of the present invention, there is provided a performance information storage means for storing performance information including time data and sound data for a plurality of tracks, and a sound information corresponding to the track to be processed whose sound timing is to be controlled. Setting means for setting control information for controlling the sounding timing based on the sound data, reading means for sequentially reading each data constituting the performance information from the performance information storage means, and determining whether or not the read data is time data. Determining means for determining, and when the determining means determines that the time data has been read by the reading means, the time data corresponds to the track to be processed, and
It is determined whether or not the sounding timing of the sounding data read out corresponding to the time data corresponds to a weak beat in performance progression, and the time data read out based on the determination result is the time data of the processing target. If the sounding timing of the sounding data corresponding to the track and read out in response to the time data corresponds to a weak beat in the performance progression, the sounding timing is determined based on the time data and the control information. Computing means for delaying the sounding timing of the sounding data read corresponding to the time data, and musical sound generating means for generating a musical sound based on the sounding data corresponding to the sounding timing when the sounding timing arrives. It is characterized by that.

According to a fourth aspect of the present invention, there is provided a performance information storage means for storing performance information including time data and sound data for a plurality of tracks, and a sound information corresponding to the track to be processed whose sound timing is to be controlled. Setting means for setting first control information and second control information different from the first control information for controlling the sounding timing based on each of the pieces of data constituting the performance information from the performance information storage means Reading means for sequentially reading, determining means for determining whether or not the read data is time data, and when the determining means determines that the time data is read by the reading means, the time data is read It is determined whether or not the time data corresponds to the track to be processed, and the time data read based on the determination result is And determining the sounding timing of the sounding data read out in accordance with the time data based on the time data and the first control information, or If the sounding timing of the sounding data read corresponding to the time data corresponds to a weak beat in the progress of the performance, the sound data is read corresponding to the time data based on the time data and the second control information. An arithmetic means for delaying the sounding timing of the sounding data; and a musical sound generating means for generating a musical sound based on sounding data corresponding to the determined or delayed sounding timing when the sounding timing arrives. It is characterized by that.

[0009]

Embodiment A. The configuration of an electronic musical instrument according to an embodiment of the present invention will be described below with reference to FIG. In the figure, reference numeral 1 denotes a group of operators,
A keyboard, a tone control, a display, and the like operated by a player are provided. Operation information for these various controls is output via a bus 9 and information supplied via the bus 9 is displayed on a display. indicate. Further, in the operator group 1, (a) a quantize value setting switch for specifying the setting of the quantize value (the length of the beat timing for performing the quantize), and (b) the quantize strength (the sounding timing converges to the beat timing). (C) a swing rate setting switch for instructing the setting of a swing rate (swing strength), and (d) a memory switch for designating the storage of performance information. (e) RUN switch for instructing start / end of automatic performance. Note that among the above-described switches, the storage switch is a lock-type switch, and the other switches are unlock-type switches.

Reference numeral 2 denotes an automatic performance memory, which stores performance information used for automatic performance. Reference numeral 3 denotes a tone generator, which synthesizes a tone signal based on the performance information supplied via the bus 9. The synthesized tone signal is emitted via the sound system 4. 6 is a CPU,
The other components are controlled based on the control program stored in the program memory 7. 5 is a timer, C
A timer interrupt is generated for the PU 6 at predetermined time intervals.
Reference numeral 8 denotes a working memory, which is used for various processes in the CPU 6.

B. Operation of embodiment B-1. The entire operation will operation of this embodiment of the embodiment will be described. First, when the power of the electronic musical instrument of this embodiment is turned on, a main routine shown in FIGS. 3 and 4 is started. When the process is started in these figures, first, predetermined initial settings are performed in step SP1. Next, the processing of steps SP2 to SP19 is repeatedly executed.
At 8, 11, and 13, the operation states of predetermined switches (quantize value setting switch, quantize strength setting switch, swing rate setting switch, storage switch, and RUN switch) in the operator group 1 are determined.
That is, if there is a switch ON event corresponding to the execution of these steps, "YES" is determined in these steps and the corresponding processing is executed. On the other hand, if there is no ON event, “NO” is determined and the process is not executed. Other processing to be performed irrespective of the operation state of the operator group 1 is described in step SP.
Executed at 19. In the following, a description will be given of a process performed when each switch has an ON event.

Processing for an ON event of a memory switch
In the present embodiment, the performance information stored in the automatic performance memory 2 is subjected to quantization or swing. The prerequisite is that the performance information to be processed must be stored in the automatic performance memory 2. . The performance information may be input from the outside by a MIDI signal or the like, or may be input by playing the keyboard provided on the control unit group 1. In the latter case, the player sets the storage switch provided on the operator group 1 to the ON state. When the storage switch is set to the ON state, it is determined as "YES" when step SP11 has been executed, the process proceeds to step SP12, and the performance information storage process is performed. That is, in step SP12, a new performance event (event of the keyboard, tone setting operator, etc.) in the operator group 1 is detected as needed, and performance information is generated based on these events and stored in the automatic performance memory 2. Is done. Upon completion of the input of the performance information, the player turns off the memory switch. Thereby, if step SP11 is executed thereafter, “NO” is determined, and the process proceeds to step SP13.

ON / OFF of the quantize value setting switch
The processing player for the event can appropriately reproduce the performance information stored in the automatic performance memory 2 (details will be described later).
To quantize a musical tone, press the quantize value setting switch. When an ON event occurs in the quantize value setting switch, the process proceeds to step SP2.
Is determined as “YES” when the process proceeds to step S
Proceed to P3. At step SP3, the player specifies a track number for which a quantize value is to be set, and the specified value is stored in a variable TRK. In the present embodiment, it is possible to provide a maximum of "16" tracks in the performance information, and each track has a number between "0" and "1".
5 ".

Next, when the processing proceeds to step SP4, the performer sets a quantize value. The quantization value set here is one of the values shown in the left column of Table 1 below. In step SP4, the clock value in the right column of Table 1 below is a variable according to the set quantize value.
Assigned to QVCL (TRK). That is, when the number of clocks of the "quarter note" is "96", a clock value corresponding to the note length related to the quantize value is set.

[0015]

[Table 1]

Turn on the quantize strength setting switch
Processing for Vent Next, if an ON event occurs in the quantizing strength setting switch, the next time step SP5 is executed, “Y
ES ”, and the process proceeds to step SP6. In step SP6, the player specifies a track number for which the quantization strength is to be set, and the specified value is stored in a variable TRK. Next, when the process proceeds to step SP7, the player sets the quantization strength QSTR (TRK) within the range of "0" to "1.0".
FIG. 5 shows how the sounding timing of the performance information converges to the beat timing according to the quantizing strength QSTR (TRK). FIG. 9A shows the beat timing when the quantize value is “quarter note” (the eighth note in the figure indicates the sound generation timing). FIG. 9C shows an example of the sounding timing of the performance information before the quantization is performed.

As will be described later in detail, if the quantization strength QSTR (TRK) is set to "0", no quantization is performed. In addition, the quantization strength QS
When TR (TRK) is set to "1.0", the tone generation timing of each piece of performance information coincides with the closest beat timing as shown in FIG. In addition, the quantization strength QST
When R (TRK) is set to “0.5”, the tone generation timing of each piece of performance information converges to the range of “beat timing ± 0.25T (where T is the cycle of the beat timing)”. When the desired quantization strength QSTR (TRK) is set in this way, the process proceeds to step SP8, and the processing proceeds to step SP8.
The loop from 2 to SP19 is repeated.

On event of swing rate setting switch
When performing a swing on the performance information, the processing player presses the swing rate setting switch in the operator group 1. When the ON event of the swing rate setting switch is detected, the process proceeds to step SP8, whereupon “YES” is determined, and the process proceeds to step SP9. In step SP9, the player specifies the track number for which the swing rate is to be set, and the specified value is stored in the variable TRK. Next, when the process proceeds to step SP10,
The swing rate SFLVL (TRK) is set within the range of "0.5" to "0.75" by the player.

Here, when the swing rate SFLVL (TRK) is "0.
A value of "5" is equivalent to no swing at all, the value increases and the sounding timing of the weak beat is delayed, and if it is "0.75", the sounding timing of the weak beat by half the beat cycle. Is late. In addition,
Details of the processing will be described later. When the desired swing rate SFLVL (TRK) is thus set, the process proceeds to step SP11, and the loop of steps SP2 to SP19 is repeated.

For the ON event of the RUN switch
When starting or stopping the automatic performance, the processing player presses the RUN switch on the operator group 1. When the ON event of the RUN switch is detected, “YES” is determined when the process next proceeds to step SP13, and the process proceeds to step SP14. In step SP14, the value of the flag RUN is inverted. Here, the flag R
UN is a flag having a value of “1” or “0”,
If it is “1”, it indicates that automatic performance is being executed.
"0" indicates that the automatic performance is stopped. Note that the flag RUN is set to “0” in the initial setting of step SP1. Next, the process proceeds to step SP
Proceeding to 15, it is determined whether or not the flag RUN is "1".

If an ON event of the RUN switch occurs during execution of the automatic performance, the flag RUN is changed from "1" to "0" in step SP14, so that "NO" is determined in step SP15. You. In this case, the process proceeds to step SP18, and an automatic performance sound muting process is performed. That is, a note-off signal is supplied to each channel of the tone generator 3.

On the other hand, when automatic performance is not performed, RU
When an ON event occurs in the N switch, step SP
Since the flag RUN is changed from "0" to "1" at 14, the determination at step SP15 is "YES" and the process proceeds to step SP16. Step SP
In step 16, initialization is performed for various variables used in the timer interrupt routine (FIGS. 7 and 8). The details will be described later. In the present embodiment, a pointer variable is set for each track, and a read address in the automatic performance memory 2 is determined by the pointer variable. Next, the process proceeds to step SP
At step 17, the pointers of all tracks are set to the start address of each track. When the above processing is completed, the processing proceeds to step SP19, and the processing proceeds to step SP2.
The loop of SP19 is repeated.

B-2. Timer Interrupt Processing In the present embodiment, a timer interrupt is generated in the CPU 6 for each "1/96" of the length of a quarter note, thereby performing an automatic performance. The details will be described with reference to FIGS. When a timer interrupt occurs, the process proceeds to step SPA1 in FIG. 7, and it is determined whether or not the flag RUN is "1". If the flag RUN is "0", it means that the automatic performance is not performed, and the process returns to the main routine (FIGS. 3 and 4) without performing any processing. If the flag RUN is “1”, “YES” is determined and the process proceeds to step SPA2. In step SPA2,
Variable TR is set to "0". Note that the variable TR indicates a track number to be processed, and is hereinafter referred to as “track number TR”.

Next, when the processing proceeds to step SPA3,
It is determined whether the variable PTM (TR) (PTM (0) at this time) is equal to or less than “0”. By the way, step SPA3
Is executed only when the flag RUN is previously set to "1" in step SP14 (see FIG. 4).
If the flag RUN has become "1", step SP1
In step 6, the variable PTM (i) (where i = 0 to 15) is set to "0". Therefore, the first step S
When PA3 is executed, “YES” is determined and the process proceeds to step SPA4.

In step SPA4, data specified by the pointer of the track number TR is read from the automatic performance memory 2. Here, first in step SP17
Is executed, the pointer is set to the head of each track number, so the first performance information of the track number “0” is read from the automatic performance memory 2 here. Next, when the process proceeds to step SPA5, the pointer is incremented so as to point to the next performance information.

Here, the format of the performance information in the present embodiment will be described with reference to FIG. The performance information is roughly divided into sound data 20, time data 30, and end data 40. The sound data 20 includes an identification code 21, a key code 22, and a sound time 23. The identification code 21 indicates that the performance information (sounding data 20) is sounding data, the key code 22 indicates a pitch to be sounded, and the sounding time 23 corresponds to the pitch. This indicates the time at which the pronunciation should be performed.

The time data 30 includes an identification code 31
And a duration 32. The identification code 31 indicates that the performance information (time data 30) is time data, and the duration 32 specifies the time from the previous sounding event until the next sounding event occurs. In addition, end data 40
Indicates that the performance information has ended for the corresponding track. In the following processing, the processing branches depending on the type of the performance information.

When the processing for reading out the sound data proceeds to step SPA6, it is determined in step SPA4 whether or not the performance information read out is end data. Assuming that the read performance information is sounding data, "NO" is determined here, and the process proceeds to step SPA7. At step SPA7, it is determined whether or not the read performance information is time data. Also in this case, the determination is “NO” and the processing is performed in step SPA.
Proceed to 16. In step SPA16, a sound generation processing subroutine shown in FIG. 9 is called.

When the process is started in FIG. 9, in step SPA51, the contents of the key code 22 are stored in the variable K.
Assigned to C. Next, in step SPA52, the content of the sound generation time 23 is substituted into a variable GT (TR).
Next, when the processing proceeds to step SPA53, the key-on signal, the variable KC (key code) and the track number TR are supplied to the tone generator 3. In the tone generator 3, a tone signal is synthesized based on these data, and the synthesized tone signal is emitted via the sound system 4.

When the above processing is completed, the processing returns to step SPA3 of the timer interrupt routine (FIGS. 7 and 8).
Here, since the variable PTM (TR) is still "0", the process proceeds to step SPA4, and the next performance information is read. Then, through step SPA5, the pointer related to the track number TR is incremented. In the example shown in FIG. 2, the time data 30 is provided immediately after the sound data 20. However, when a chord is to be generated, the time data may be provided after a plurality of sound data. In this case, the sound generation process (step SPA16) is repeated for the plurality of sound data.

Processing when time data is read If the performance information read in step SPA4 is time data, the processing proceeds to step SPA8 via steps SPA6 and SPA7, and the contents of the duration 32 are substituted into a variable TM. You. Next, when the process proceeds to step SPA9, it is determined whether or not the clock value QVCL (TR) is "0" or more. That is, when performing quantization, the clock value QVCL (TR) becomes a value equal to or more than "1" (see Table 1), and it is determined in step SPA9 whether or not to perform quantization. Here, the processing according to the determination content of step SPA9 will be described.

(A) Processing When Quantization Is Not Performed When quantization is not performed, “NO” is determined in the step SPA 9, and the processing proceeds to a step SPA 17. In step SPA17, the content of the variable TM (that is, the content of the duration 32) is added to the variable PTM (TR). As a result, the content of the variable PTM (TR) becomes “1” or more. Therefore, the next processing is step S
When the process proceeds to PA3, the determination is “NO” here, so the process proceeds to step SPA13, and the count subroutine shown in FIG. 10 is called.

When the process is started in FIG. 10, in step SPA61, the variable PTM (TR) is decremented by "1". Therefore, the content of variable PTM (TR) is
It becomes "TM-1". Next, when the process proceeds to step SPA62, it is determined whether or not the variable GT (TR) is equal to or less than "0". To the variable GT (TR), the content of the sounding time 23 when step SPA52 is executed first is substituted. Therefore, at this point, the variable GT (TR) is equal to or greater than "1", so that the determination is "YES", and the process proceeds to step SPA64. In step SPA64, the content of the variable GT (TR) is decremented by "1", and the process returns to the timer interrupt routine (FIGS. 7 and 8).

In step SPA14, the track number TR is incremented by "1". Since the track number TR was “0”, it is set to “1” here. Next, when the processing proceeds to step SPA3 via step SPA15, the same processing as described above is performed on the track with the track number "1". As described above, the track number is transmitted via step SPA14.
TR is incremented and the track number "1" ~
Processing is performed on each track of “15”. In step SPA15, the track number TR is set to "1".
It is determined whether or not "6" has been reached. If "YES" here, the process returns to the main routine (FIGS. 3 and 4).

Thereafter, a timer interrupt occurs at predetermined time intervals, but as described above, at steps SPA17 and SPA1.
4 is executed, the track number TR =
For “0”, the variable PTM (TR) is set to “TM−1”. Therefore, if the step SPA3 is executed when the track number TR is "0", it is determined as "NO",
Through step SPA13, the variable PTM (TR) is changed to "TM-
2 ". Thus, the variable PTM (TR) is decremented by "1" each time a timer interrupt occurs.
Then, the timer interrupt is repeated "TM" times and the variable PTM
When (TR) becomes "0", "YES" is determined in the step SPA3, and the next performance information is read out through the step SPA4. That is, the variable PTM (TR) is
This corresponds to the time (timer interrupt count) until the next performance information is read out for the track number TR. Therefore, the variable PTM (TR) is called “residual duration” and the variable TM is called “duration”.

(B) Processing for Performing Quantization On the other hand, when performing quantization, a “YES” determination is made in step SPA 9, and the processing proceeds to step SPA 10. In step SPA10, the variable QCNT1 (TR)
Is added to the duration TM. Here, the variable QCNT1 (i) (where i = 0 to 15) corresponds to step S
At P16 (see FIG. 4), each clock value QVCL (i)
Is initially set to half the value. As an example, if the quantize value is "quarter note", the clock value QVCL (TR)
Is "96", the variable QCNT1 (TR) is initialized to "48". Assuming that the duration TM is "24" (= 96/4) corresponding to "sixteenth note", in step SPA10, the variable QCNT1 (TR)
Is substituted for “72”.

In step SPA10, the remaining duration PTM (TR) is set to "TM × (1-QSTR (TR))".
Is added. As mentioned above, the residual duration PT
Since M (i) (where i = 0 to 15) is initially set to “0” in step SP16, at this time, the remaining duration PTM (TR) is set to “TM × (1-QSTR (TR)”).
) "Will be substituted. If the quantization strength QSTR (TR) is “0”, this processing is the same as that in step SPA17 described above. In this step SPA10, the quantization strength Q
The value of the remaining duration PTM (TR) is changed according to the value of STR (TR). The above example (clock value QVCL (TR) = 9
6, duration TM = 24), assuming that the quantization strength QSTR (TR) is “0.5”, the residual duration PTM (TR) is set to “12”.

In step SPA10, the quantization strength QSTR (TR) is added to the variable QCNT2 (TR). In step SP16, the multiplication result of the clock value QVCL (i) and the quantization strength QSTR (i) is assigned to the variable QCNT2 (i) (where i = 0 to 15).
The above example (clock value QVCL (TR) = 96, duration TM = 24, quantization strength QSTR (TR) = 0.5)
Is a variable before step SPA10 is executed.
The initial value of QCNT2 (TR) is “48” (= 96 × 0.5), and the variable QCN after step SPA10 is executed.
T2 (TR) becomes “60” (= 48 + 24 × 0.5).

Next, when the process proceeds to step SPA11, the variable QCNT1 (TR) is divided at the integer level by the clock value QVCL (TR), and the quotient is assigned to the variable QTT, and the remainder is assigned to the variable SRP. Is done. In the above example, the clock value QVCL (TR) is "96" and the variable
Since QCNT1 (TR) was “72”, the variable QTT becomes “0” and the variable SRP becomes “72”. Next, when the process proceeds to step SPA12, the variable QTT becomes “0”.
It is determined whether it is greater than. According to the above example, the variable
Since QTT is “0”, the determination is “NO”, and the processing advances to step SPA13 via step SPA3.

Thereafter, when a timer interrupt occurs, the processing advances to step SPA13 via step SPA3 for the track number TR, and the remaining duration
The count operation is performed while PTM (TR) is decremented. After the remaining duration PTM (TR) becomes "0", when the sound data is read in step SPA4, the processing proceeds to step SPA16 via steps SPA6 and 7, and the sound processing for the newly read sound data is performed. Is performed. In the above example (clock value QVCL (T
R) = 96, duration TM = 24, quantization strength QSTR (TR) = 0.5), the duration T
Residual duration even though M is "24"
PTM (TR) was set to "12". Explaining with reference to FIGS. 5 (c) and 5 (d), a tone whose duration is set so as to be emitted at time t ₂ (time after “24” clock has elapsed from time t ₀ ) in the original performance information. The data is subjected to the quantization so that the time t
₁ (time after “12” clocks have elapsed from time t ₀ ). That is, sound timing of the musical tone will be converged towards the time point t ₀ is the beat timing.

After the tone generation processing in step SPA16 is performed, when the processing proceeds to step SPA8 via steps SPA3 to SPA7, the next duration TM is read from the automatic performance memory 2. According to the example in FIG. 5 (c), a time t ₆ next note timing has elapsed from time t ₂ "48" clocks. That is, the read duration TM is “48”. Next, when the processing proceeds to step SPA10 via step SPA9, the variable QCNT1
Duration TM is added to (TR). Variable QCNT1
(TR) is set to “120” here because it was previously set to “72” in step SPA18. Further, the remaining duration PTM (TR) has been set to “24” (0 + 48 × 0.5) this time because the remaining duration PTM (TR) has been set to “0” because step SPA14 has been executed a plurality of times. Also, the variable QCNT2 (TR)
Since it was set to "60" when PA10 was executed,
This time, it is set to “84” (= 60 + 48 × 0.5).

Next, when the process proceeds to step SPA11, the variable QCNT1 (TR) is divided by the clock value QVCL (TR), and the quotient is substituted for the variable QTT and the remainder is substituted for the variable SRP.
In the above example, the variable QCNT1 (TR) is "120" and the clock value Q
Since VCL (TR) is "96", the variable QTT is "1".
And the variable SRP is set to “24”. Next, when the process proceeds to step SPA12, since the variable QTT is “1”, it is determined to be “YES”, and the process proceeds to step SPA18. Thus, step SPA12
Is determined to be "YES" when the beat of the original performance information has changed at least once from a strong beat to a weak beat or from a weak beat to a strong beat.

In step SPA18, the variable QCN
The variable SRP ("24" in the above example) is assigned to T1 (TR). Next, when the process proceeds to step SPA24, the variable Q
It is determined whether TT is an odd number. The variable QTT indicates how many times the beat has changed from a strong beat to a weak beat or from a weak beat to a strong beat since the previous processing of this step was performed. Therefore,
If the variable QTT is not odd (that is, it is even), it means that the beat is the same strong and weak as when the process of this step was performed last time. In this case, the process proceeds to step SPA23. On the other hand, when the variable QTT is an odd number, it means that the beat is a strong or weak beat different from the time when the process of the previous step was performed. In this case, the process proceeds to step SPA19.

When the process proceeds to step SPA19, the contents of the flag FSFL (TR) are inverted. The flag FSFL
(i) (where i = 0 to 15) is set to “0” in step SP16. Therefore, this time the flag
FSFL (TR) is set to "1". Here, step S
The condition for executing PA 19 is that “YES” is determined in step SPA 24, that is, “the beat is switched between a strong beat and a weak beat”. Therefore, the flag
If FSFL (TR) is “0”, the next note is a strong beat,
In the case of "1", it is understood that the next pronunciation has a weak beat.

Next, when the processing proceeds to step SPA20, it is determined whether or not the flag FSFL (TR) is "1", that is, whether or not the performance information is for a weak beat. In the above example, the determination is “YES”, and the process proceeds to step SPA2.
Proceed to 1. In step SPA21, a variable SFLTM (TR) is added to the remaining duration PTM (TR). By the way, the variable SFLTM (i) (where i = 0 to 15)
In step SP16, “QVCL (i) × 2 × (SFLV
L (i) -0.5) ". In the above example, the clock value QVCL (TR) was "96", but in step SP10 (see FIG. 3), the swing rate SFL
Assuming that VL (TR) is set to “0.5”, the number of delayed clocks SFLTM (TR) is initialized to “0”.

Therefore, in the above example, step SP
At A21, the substantial process is not performed, and the process proceeds to step SPA23. In step SPA23,
Clock value QV for residual duration PTM (TR)
The result of multiplication of CL (TR) and the quantization strength QSTR (TR) is added. That is, the residual duration PTM (TR) is
It is set to “72” (24 + 96 × 0.5). When the above processing ends, the processing proceeds to step SPA3.
Return to Explaining with reference to FIGS. 5 (c) and 5 (d), the sounding whose duration is set so as to sound at time t ₆ (time after “48” clocks have elapsed from time t ₂ ) in the original performance information. By performing the quantization, the data is generated at time t ₇ (time after “72” clocks have elapsed from time t ₁ ). That is, sound timing of the musical tone will be converged towards the time t ₁₀ is a beat timing closest.

Processing for Swing In the above example, the swing rate SFLVL (TR) is "0.
5 ", so that steps SPA20 to SPA22 are executed.
In step S, substantially no processing was performed.
In P10, if a swing rate SFLVL (i) (i = 0 to 15) exceeding "0.5" and not more than "0.75" is set, a swing effect is applied to the performance information here. You. The details will be described below.

First, after the swing rate SFLVL (TR) is set, when step SP16 is executed, the variable SFLTM
(i) (where i = 0 to 15) is expressed as "QVCL (i) x 2 x (SFLV
L (i) -0.5) ". For example, swing rate SFLVL
Assuming (TR) is set to "0.6", "QVCL
(i) × 2 × (SFLVL (i) -0.5) ”is“ 19.2 ”(96 × 2
× (0.6−0.5)). However, step SP1
In 6, the fractional part of the delay clock number SFLTM (TR) is rounded off, and as a result, the delay clock number SFLTM (TR)
Is set to “19”.

Next, a timer interrupt routine (FIGS. 7 and 8)
At step SPA20, the flag F
Based on the SFL (TR), it is determined whether the next pronunciation is a strong beat or a weak beat. By the way, since the first beat of the music is a strong beat, the change of the beat that occurs first is a change from a strong beat to a weak beat. Therefore, step SPA2
0 is determined as “YES”, and the process proceeds to step SP.
Proceed to A21. In step SPA21, the number of delay clocks SFLT is calculated with respect to the remaining duration PTM (TR).
M (TR) is added. As a result, the tone generation timing of the weak beat is delayed by a time corresponding to the number of delay clocks SFLTM (TR).

Next, when the beat changes from a weak beat to a strong beat, "YES" is determined again in step SPA12, and the flag FSFL (T
R) is set to “0”. Therefore, the processing is performed in step S
The process proceeds to step SPA22 via PA20. In step SPA22, the delay clock number SFLTM (TR) is subtracted from the remaining duration PTM (TR). That is, while the number of delayed clocks SFLTM (TR) was added to the remaining duration PTM (TR) when step SPA21 was first executed, this time it is subtracted, so that the tone generation timing of the musical tone is It turns out that it returns. As described above, by the processing of steps SPA20 to SPA22, the original beat is generated at the original beat timing on a strong beat, and at a timing delayed by the delay clock number SFLTM (TR) on a weak beat.
A pronunciation process is performed.

As described above, in the present embodiment, the "quantize" or "swing" effect can be appropriately applied to the musical tone, and by using both of them, an even more interesting automatic performance can be performed. . By the way, it is common for a player to perform automatic performance by first setting parameters such as quantization strength and swing rate, but during the performance, the performance is unnatural because these parameters are inappropriate. It is also possible. In such a case, various parameters may be changed by appropriately operating the corresponding operator in the operator group 1. When parameters are changed, the next time a timer interrupt occurs, various processes are performed based on the changed parameters, so that the performer can quickly judge whether the changed parameters are right or wrong. It is. Furthermore, in this embodiment, since various parameters relating to "quantize" and "swing" can be set for each track of the performance information, extremely precise musical tone control can be performed.

C. Modifications The present invention is not limited to the above-described embodiments, and various modifications are possible, for example, as follows. In the above embodiment, duration-type performance information (information including sound data, time data, etc., as shown in FIG. 2) is used, but event-type performance information (note-on data,
Information including time data, note-off data, etc.) may be used. In the above embodiment, the processing in step SPA23 is performed after the processing in steps SPA20 to SPA22 is performed. That is, when "quantize" and "swing" are used together, "quantize" is performed after "swing" is performed. However, the step SPA23 may be executed immediately after the step SPA19, and the "swing" may be performed after the "quantize".

[0053]

As described above, according to the automatic performance device of the present invention, it is possible to change the tone generation timing of a musical tone in real time or to delay the tone generation timing of a musical tone in a weak beat in real time. . further,
In any case, since the tone generation timing is calculated according to the track, the tone generation timing of the musical tone can be controlled precisely and in real time.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an embodiment.

FIG. 2 is a diagram showing a format of performance information in one embodiment.

FIG. 3 is a flowchart of a main routine of one embodiment.

FIG. 4 is a flowchart of a main routine of one embodiment.

FIG. 5 is a time chart of one embodiment.

FIG. 6 is an explanatory diagram of a swing effect.

FIG. 7 is a flowchart of a timer interrupt routine according to one embodiment.

FIG. 8 is a flowchart of a timer interrupt routine according to one embodiment.

FIG. 9 is a flowchart of a sound generation subroutine of one embodiment.

FIG. 10 is a flowchart of a count subroutine of one embodiment.

FIG. 11 is an explanatory diagram of a quantization effect.

FIG. 12 is an operation explanatory view of a conventional automatic performance device.

[Explanation of symbols]

 2 Automatic performance memory (performance information storage means) 3 Tone generator (reproduction means) 6 CPU (readout means, calculation means, reproduction means)

Claims (4)

(57) [Claims] 1. Performance including time data and pronunciation data
A performance information storage means for a plurality of tracks storing information, the track of the processing target to be controlled Pronunciation timing
Control the sounding timing based on the corresponding sounding data
Setting means for setting control information for performing the performance information, and data for configuring the performance information from the performance information storage means.
Reading means for sequentially reading data, and determining whether or not the read data is time data.
Means, and said time data is read by said reading means in said determination.
It is determined that the data has been read, and the read time data
If the time corresponds to the track to be processed,
Data and the control information.
Calculates the sounding timing of the sounding data read accordingly
Calculation means for performing the sound generation timing, and
Generates musical tones based on pronunciation data corresponding to
Automatic performance apparatus comprising: the musical tone generating means, a to. 2. The automatic performance device according to claim 1, wherein said arithmetic means outputs the read time data to a processing unit.
If it does not correspond to the track of the elephant,
Read out corresponding to the time data based on the
An automatic performance device for calculating the sounding timing of the generated sounding data . 3. Performance including time data and pronunciation data
A performance information storage means for a plurality of tracks storing information, the track of the processing target to be controlled Pronunciation timing
Control the sounding timing based on the corresponding sounding data
Setting means for setting control information for performing the performance information, and data for configuring the performance information from the performance information storage means.
Reading means for sequentially reading data, and determining whether or not the read data is time data.
Means for reading the time data by the reading means in the determining means.
If it is determined that the data has been read out,
Der is, or but those corresponding to the track of the processing target
And sound data read out corresponding to the time data.
Whether the sounding timing of the sound corresponds to the weak beat in the performance progress
Is determined, and the time data read based on the determination result is
Data corresponds to the track to be processed,
And the sound data read out corresponding to the time data.
When the sound timing of the data corresponds to the weak beat in the performance progress
Based on the time data and the control information,
The sound data of the sound data read out corresponding to the time data
An arithmetic means for delaying the imaging; and
Tone generation that generates a tone based on the corresponding pronunciation data
An automatic performance device comprising: a live means . 4. Performance including time data and pronunciation data
A performance information storage means for a plurality of tracks storing information, the track of the processing target to be controlled Pronunciation timing
Control the sounding timing based on the corresponding sounding data
Control information and the first control information for performing
Setting means for setting different second control information; and each data constituting the performance information from the performance information storage means.
Reading means for sequentially reading data, and determining whether or not the read data is time data.
Means for reading the time data by the reading means in the determining means.
If it is determined that the data has been read out,
Time data corresponding to the track to be processed;
Is determined based on the determination result.
Time data corresponds to the track to be processed
Based on the time data and the first control information
Of the sound data read out corresponding to the time data
Determine the sounding timing, or
Pronunciation timing of pronunciation data read corresponding to data
If the time corresponds to a weak beat during the performance,
Time data based on the data and the second control information.
The sounding timing of the sounding data read in accordance with
Calculating means for delaying, the determined or delayed sounding timing
Sounding data corresponding to the sounding timing
Automatic performance apparatus characterized by comprising a, a musical tone generating means for generating a musical tone based on the over data.