JP2000003174A - Performance information playback device - Google Patents

Abstract

(57) [Problem] To provide a performance information reproducing apparatus capable of adjusting a tempo at an appropriate timing according to a tempo changing mode. When an incrementer is operated, the value of a tempo register TMP is increased or decreased by "1" in accordance with the operation (S220, S260). Event flag EVE
If NT is not "1" (S230, S270: N
O), that is, unless the preset tempo switch is operated and the preset tempo is not stored in the tempo register TMP, the down counter is immediately set based on the value of the tempo register TMP (S240, S280), and the performance information Change the playback tempo. As a result, if you operate the incrementer to increase or decrease the tempo, you can change the tempo immediately, and if you operate the preset switch to set the preset tempo, You can change the tempo.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a performance information reproducing apparatus for reproducing stored performance information.

[0002]

2. Description of the Related Art Conventionally, there has been known a performance information reproducing apparatus for performing automatic performance and automatic accompaniment based on performance information (automatic performance data and automatic accompaniment data) stored in various storage media such as a ROM and a flexible disk. ing. It is convenient if the user of the apparatus can freely change the tempo of the reproduction of such performance information (ie, automatic performance, automatic accompaniment, etc.). Therefore, conventionally, as a tempo change operator for changing the tempo of an automatic performance or an automatic accompaniment, a pair of increase / decrease buttons capable of freely increasing / decreasing the tempo, or directly changing to a preset tempo (preset tempo). Possible preset tempo switches are used.

By the way, when a tempo change is instructed by a preset tempo switch, the tempo changes irrespective of the performance up to that time, and if it is in the middle of a bar, a great sense of discomfort may occur in the progress of the rhythm. . Therefore, as described in, for example, JP-A-5-66776, even if the tempo changing operator is operated, the tempo is not immediately changed, but the automatic performance or automatic accompaniment is performed in the next bar. Techniques have been developed to set a new tempo when you reach your head. In this way, even if the tempo changes suddenly, the possibility of feeling uncomfortable can be reduced.

[0004]

However, there are various ways of changing the tempo in the original performance, and there are cases where it is desired to change suddenly or gradually. The technique of changing the tempo only at the beginning of the bar as described above is suitable when you want to change the tempo rapidly, but the subtle tempo adjustment such as gradually decreasing the tempo like ritardando is not There was a problem that it could not be performed freely.

[0005] The present invention has been made in view of the above problems, and has as its object to provide a performance information reproducing apparatus capable of adjusting the tempo at an appropriate timing in accordance with a tempo change mode.

[0006]

Means for Solving the Problems and Effects of the Invention To solve the above-mentioned problems, a performance information reproducing apparatus according to the present invention (claim 1) has a performance information storage means for storing performance information, A performance information reproducing apparatus comprising: performance information reproducing means for reproducing performance information stored in a storage means; and tempo control means for controlling a tempo of reproduction of the performance information by the performance information reproducing means. When the reproduction means reproduces the performance information at the reproduction tempo, the measure detection means detects the end of the measure in synchronization with the reproduction, and a tempo increase / decrease for instructing increase / decrease of the reproduction tempo by an external operation. An operator, and a preset tempo setting operator for setting a predetermined preset tempo as the playback tempo by an external operation. When emission ports decreasing operator is operated,
The tempo of the playback is immediately increased or decreased in response to the operation on the tempo increase / decrease operator, and when the preset tempo setting operator is operated, after the operation, the measure detecting means detects the end of the measure at a timing. A preset tempo is set as the reproduction tempo.

In the performance information reproducing apparatus according to the present invention having the above-described configuration, the performance information storage means stores the performance information, and the performance information reproduction means is controlled by the tempo control means. The performance information is reproduced at the tempo of the reproduction to be performed. When the performance information reproducing means reproduces the performance information, the measure detecting means detects the end of the measure in synchronization with the reproduction. When the tempo increasing / decreasing operator is operated, the tempo controlling means immediately increases / decreases the playback tempo in response to the operation of the tempo increasing / decreasing operator. At the timing when the means detects the end of the bar, a preset tempo is set as a reproduction tempo.

That is, in the performance information reproducing apparatus of the present invention (claim 1), whether the tempo of reproduction is to be changed “gradually” or “rapidly”, it is uniform. Rather than changing the tempo either "at the point where the performance has progressed to the beginning of the next bar" or "immediately (real time)", the tempo increase / decrease operator to increase or decrease the playback tempo has been operated In this case, the tempo of the playback is increased or decreased in real time based on the operation, and if the preset tempo setting operator for instructing the preset tempo operation is operated, the preset tempo is immediately changed. Instead of waiting for the next measure to start, the first time that the measure is new (ie, when the measure detection means detects the end of the measure), the preset tempo is set as the playback tempo. It is to set the tempo.

Therefore, according to the performance information reproducing apparatus of the present invention, it is possible to gradually increase or decrease the reproduction tempo in "real time" by operating the tempo increase / decrease operator, and to perform the preset tempo setting operation. By operating the child, the playback tempo can be rapidly changed to the preset tempo at the beginning of the bar without any discomfort. In other words, if you want to gradually change the tempo of playback, you can change the tempo by operating the tempo increase / decrease control, "immediately". The reproduction tempo can be adjusted at an appropriate timing in accordance with the tempo change mode, and the reproduction of performance information with a great change in tempo can be performed.

According to the performance information reproducing apparatus of the present invention, for example, by operating the tempo increasing / decreasing operator at the final part of a certain melody, "the tempo gradually decreases".
At the same time, operate the preset tempo setting operator,
From the beginning of the melody starting with the next bar, the tempo can be set to a rather high tempo, making it possible to perform very varied tempo operations. However, even after operating the preset tempo setting operator, if the tempo increase / decrease operator is operated to increase / decrease the current playback tempo, the tempo increase / decrease The child may continue to operate. Then, the performance of the next melody (that is, reproduction of performance information) is performed at a tempo different from the tempo originally desired by the user (ie, the preset tempo). Therefore, when the preset tempo setting operation element is operated, the tempo control means operates the tempo increasing / decreasing operation until the tempo control means sets the preset tempo as the reproduction tempo. What is necessary is just to provide an increase / decrease inhibiting means for inhibiting increase / decrease of the reproduction tempo according to the operation on the child. This is preferable because the erroneous operation as described above can be prevented.

By the way, the preset tempo set corresponding to the preset tempo setting operator may be set before shipment of the performance information reproducing apparatus of the present invention, or may be set before reproducing the performance information. It may be set in advance according to the user's preference. If a large number of preset tempo setting operators are provided and different preset tempos are set for each of them, it is possible to enjoy a performance with more varied tempo.

However, in general, the range of tempo values used is wide, and not all values can be set as preset tempos. Therefore, it is preferable to provide a temporary storage means for temporarily storing the preset tempo when the preset tempo setting operator is operated, and to configure the tempo control means as follows.
That is, when the preset tempo setting operator is operated, after the operation, the preset tempo stored in the temporary storage means is set as the reproduction tempo at a timing at which the measure detecting means detects the end of the measure, Then, if the tempo increase / decrease operator is further operated during a period from when the preset tempo setting operator is operated to when the preset tempo stored in the temporary storage means is set as the playback tempo, The preset tempo stored in the temporary storage means is configured to be increased or decreased according to an operation on a tempo increase / decrease operator.

In this way, if it is desired to change the tempo from the beginning of the next bar, even if the target tempo is not set as a preset tempo, the operator first operates the preset tempo setting operator. Then, by operating the tempo increase / decrease operator, the performance information can be reproduced at the desired tempo. As a result, the performance information can be reproduced at more various tempos. Furthermore, if a plurality of preset tempo setting operators are provided and different preset tempos are assigned to the respective preset tempo setting operators, the preset tempo setting operation assigned the preset tempo closest to the target tempo. By operating the tempo increasing / decreasing operator after operating the child, it is possible to improve the operability of the performance information reproducing apparatus, for example, it is possible to quickly obtain a target tempo.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electronic musical instrument to which a performance information reproducing apparatus according to one embodiment of the present invention is applied will be described below with reference to the drawings. In the electronic musical instrument according to the present embodiment, description will be made assuming that the automatic accompaniment data stored as performance information is reproduced (that is, automatic accompaniment).

FIG. 1 is a block diagram showing an electric configuration of an electronic musical instrument to which a performance information reproducing apparatus according to the present invention is applied. As shown in FIG. 1, the electronic musical instrument has a CPU 2, a ROM
4, RAM 6, timer 8, panel 10, keyboard 1
2, a tone generating circuit 14, a flexible disk drive (FDD) 18, a MIDI interface circuit (hereinafter referred to as "I / F circuit") 20, and a bus 21 connecting these components.

Here, first, as shown in FIG. 2, a liquid crystal display panel 22, a parameter selection switch 24a,
24b, 24c,... (Hereinafter collectively referred to as “parameter selection switch 24”), preset tempo switch 26, incrementer 28, automatic performance switch 30
And the like are provided. The panel 10 also includes other operators (not shown) such as a rhythm style selection switch and other operators (parameter selection switch 24, preset tempo switch 26,
A panel scan circuit (not shown) for reading input information by the incrementer 28 and other operators is provided, and a drive circuit (not shown) for driving the liquid crystal display panel 22 is provided.

The liquid crystal display panel 22 displays the tone color, tempo, rhythm style, and other performance parameters set for the electronic musical instrument. A cursor (shown by oblique lines) is displayed on the liquid crystal display panel 22. When the user presses one of the parameter selection switches 24 to select a performance parameter to be changed, the selected performance parameter is displayed. The cursor is moved to the position where it is set. The selected performance parameter, that is, the performance parameter specified by the cursor, can be changed by operating the incrementer 28 or other operation element. This incrementer 2
Reference numeral 8 denotes a disk that can be rotated about a rotation axis by a user, and a rotation sensor (not shown) for detecting rotation of the incrementer 28 is provided on the back side thereof. Each time the rotation sensor is rotated by a predetermined angle, the rotation sensor detects the rotation operation (incremental event) of the incrementer 28 and the rotation direction thereof.
The performance parameters specified by the cursor are changed in accordance with a rotation operation on the incrementer 28.

For example, a parameter selection switch 24c for selecting "tempo of automatic accompaniment" from various performance parameters.
Is pressed, the cursor is moved to a position in the liquid crystal display panel 22 where the tempo (beats per minute in this embodiment) is displayed, as shown in FIG. In this state, when the incrementer 28 is rotated clockwise (+ direction in FIG. 2), the tempo is increased and counterclockwise (− direction in FIG. 2).
When rotated, the tempo is reduced. In other words, the tempo set at the present time is increased or decreased by operating the incrementer 28, and thereafter, the automatic accompaniment is performed at the increased or decreased new tempo,
The new tempo is displayed on the liquid crystal display panel 22.

The tempo can also be changed by a preset tempo switch 26. The preset tempo switch 26 includes a plurality of preset tempo switches 26a, 26b,..., And a preset tempo is preset for each preset tempo switch 26. For example, the preset tempo switch 26
In “a”, “120” is set as the preset tempo. When the preset tempo switch 26a is pressed, as shown in FIG. 2, "120" is displayed at the position indicating the tempo on the liquid crystal display panel 22, and thereafter, the automatic accompaniment is executed at the tempo "120". is there.

The start and end of the automatic accompaniment can be freely instructed by operating the automatic accompaniment switch 30. The automatic accompaniment switch 30 is configured as a pair of switches of an automatic accompaniment start switch (start SW) 30a for starting automatic accompaniment and an automatic accompaniment stop switch (stop SW) 30a for terminating automatic accompaniment.

Returning to FIG. 1, the description will be continued. Keyboard 1
Reference numeral 2 denotes a plurality of keys (88 in this embodiment). The keyboard 12 also includes a touch sensor that detects key event information such as a key event (ie, a key press operation and a key release operation) of each key, the strength of a key press, and a key number. A keyboard scan circuit that scans the touch sensor and transfers key event information to the CPU 2 is provided.

The tone generator 14 is capable of generating independent digital tone signals of a plurality of channels (32 channels in this embodiment) by time division multiplexing.
The tone generation circuit 14 includes an assignment memory 14a for storing various data necessary for generating a digital tone signal from each channel for each channel. The assignment memory 14a is set in the assignment memory 14a. A digital tone signal is generated based on the data. The tone generating circuit 14 is also provided with a digital signal processor (DSP) for imparting various effects such as reverb to the tone, transferring various data to the tone generating circuit 14 and effect programs and effect coefficients to the DSP. , Etc., various effects such as reverb can be applied to the generated musical tone signal.

The digital tone signal generated by the tone generating circuit 14 is supplied to a sound system 16. The sound system 16 includes a D / A converter, an amplifier, a speaker, and the like. The digital tone signal output from the tone generator 14 is converted into an analog tone signal by the D / A converter, and further converted to an amplifier. To amplify the analog tone signal to generate a tone from a speaker.

The CPU 2 executes a control program (a control program for generating musical tones and other C programs) stored in the ROM 4.
The panel scan circuit scans the panel 10 according to various programs describing control procedures executed by the PU2, and various information (panel event information) associated with operation of various switches on the panel 10 (panel event). ), And causes the keyboard scanning circuit to scan the keyboard 12 to read key event information. The tone generation circuit 14 executes a tone generation process by allocating a tone generation channel (channel) used for generating a digital tone signal in the tone generation circuit 14 and controlling the assigned channel.

The CPU 2 has an interrupt input terminal I
An NT is provided, and an interrupt signal is supplied from the timer 8. On the other hand, the timer 8 is provided with a down counter for supplying an interrupt signal at predetermined time intervals. The down counter has a predetermined time interval (for example, 10
At every μsec), the value held by itself is reduced. The initial value of the down counter can be set by the CPU 2, for example, “10” as the initial value.
When “0” is set, “1” is subtracted from “100” at predetermined time intervals. When the value of the down counter becomes "0", an interrupt signal is input from the timer 8 to the interrupt input terminal INT of the CPU 2, and the value of the down counter is again reduced by "1" from "100". Go.
For example, if the above time interval is 10 μsec and “100” is set as an initial value, 1
When an interrupt signal is input every msec (= 10 μsec × 100) and “200” is set, 2
An interrupt signal is input every msec. As will be described later, the length of one beat is defined by the time required for a predetermined number of interrupts from the timer 8 to the CPU 2.
By changing the initial value of the down counter, the tempo of the automatic accompaniment can be changed.

The ROM 4 stores, in addition to the control program, automatic performance data (sequence data), automatic accompaniment data (style data), various musical sound data, and the like at the time of factory shipment. When the apparatus is set to the automatic accompaniment mode by operating the panel 10, the CPU 2 generates a musical tone signal from the musical tone generation circuit 14 based on the automatic accompaniment data and performs automatic accompaniment.

The RAM 6 is used as a work area for the CPU 2 and has a buffer for temporarily storing panel event information detected by the panel scan circuit and key event information scanned by the key scan circuit. In addition to the definition, various areas such as a register (for example, a tempo register TMP described later), a counter, and a flag are defined.

In the electronic musical instrument configured as described above,
Control processing executed by the CPU 2 will be described with reference to FIGS. When the power of the electronic musical instrument is turned on, a main routine shown in FIG. 3 is started. In the main routine, first, at step (hereinafter referred to as “S”) 10, RA
If there is any content stored in M6, clear it,
Automatic accompaniment flag RUN and event flag EVE to be described later
Initialization processing such as resetting NT to 0 and clearing the contents stored in the assignment memory 14a of the tone generation circuit 14 if they exist is performed.

Next, the panel scan circuit scans the panel 10 to check whether or not a panel event has occurred (S20). If a panel event has occurred (S2
0: YES), after performing the panel event process (S3
0), and proceed to S40. This panel event processing
As shown in FIG. 4, this is a process for performing an operation corresponding to the on / off information of each switch.

When the panel event process is started, first, it is determined whether or not the start switch 30a is turned on (S110). If it is determined that the start switch 30a is turned on (S110: YES), the clock counter C is turned on.
LOCK, beat counter BEAT, bar counter BA
R is reset to "0" and the automatic accompaniment flag RU
N is set to “1” (S120), and the process proceeds to S130. On the other hand, when it is not determined that the start SW 30a has been turned on (S110: NO), the process proceeds to S130 without executing S120. The clock counter CL
OCK, beat counter BEAT and bar counter B
AR is a counter that is incremented by a timer interrupt process described later (that is, its value is incremented by 1). The beat counter BEAT corresponds to a beat number (that is, a number indicating the number of beats in one bar), and the bar counter BAR indicates a bar number.

In S230, it is determined whether or not the stop SW 30b is turned on. If it is determined that the stop SW 30b is turned on (S130: YES), the automatic accompaniment flag RUN is set to "0" (S140). Is transmitted to the musical tone generation circuit 14 (S150), and a command to promptly mute the musical tone generated by the tone generator is transmitted to the musical tone generating circuit 14 (S16).
Move to 0. On the other hand, if it is not determined that the stop SW 30b has been turned on (S130: NO), the process proceeds to S14.
0, the process shifts to S160 without executing S150.

In S160, it is determined whether any of the preset tempo switches 26 has been turned on. If it is not determined that any of the preset tempo switches 26 has been turned on (S160: NO), the process proceeds to S160.
The process proceeds to 190, but when it is determined that any of the preset tempo switches 26 has been turned on (S160: Y
ES), the preset tempo set in advance in the preset tempo switch 26 (by factory setting and by a user's setting operation) in the tempo register TMP (S170), and the event flag EVENT is set.
Is set to "1", and the routine goes to S190.

In S190, as shown in FIG. 6, if the operation of the incrementer 28 (increment event) has been performed, the incrementer corresponding processing is performed correspondingly. That is, when the incrementer corresponding process is started, first, it is determined whether or not the operation of the incrementer 28 to increase the tempo (tempo increment) has been performed, that is, whether or not the incrementer 28 has been rotated in the + direction ( S210). Here, when it is determined that the tempo is not incremented (S210: NO), the process proceeds to S250. When it is determined that the tempo is incremented (S210: YES), the tempo register TMP is increased by "1" (S220). ) And event flag E
It is determined whether or not VENT = “1” (S23)
0). If it is determined that the event flag EVENT = "1" (S230: YES), the process proceeds to S250. If it is determined that the event flag EVENT is not "1" (S230: NO), the tempo register TM is determined.
The initial value of the down counter is set based on P (24
0), and proceed to S250. Here, the tempo register T
The correspondence between the MP and the initial value of the down counter is stored in advance in the ROM 4 as a table, and the CPU 2 refers to this table and sets the initial value of the down counter according to the tempo register TMP.

In S250, it is determined whether or not the operation of the incrementer 28 to reduce the tempo (tempo decrement) has been performed, that is, whether or not the incrementer 28 has been rotated in the negative direction. Here, if it is determined that the tempo is not decremented (S250: NO), the process returns to the panel event process. If it is determined that the tempo is decremented (S250: YES), the tempo register T
MP is decreased by "1" (S260), and it is determined whether or not the event flag EVENT = "1" (S260).
270). If it is determined that the event flag EVENT = "1" (S270: YES), the process returns to the panel event process. If it is determined that the event flag EVENT is not "1" (S270: NO), the tempo register is determined. After setting the down counter based on the TMP (S280), the process returns to the panel event process of FIG.

That is, the state where the preset tempo is set in the tempo register TMP (that is, the event flag EV)
In the state of ENT = "1"), the tempo register TMP is further increased or decreased according to the operation of the incrementer 28, but the down counter is not set based on the increased or decreased tempo register TMP.

Returning to FIG. 5, after the above-described incrementer-compatible process (S190), a process for an operation on another switch on the panel 10 (S200), for example, if the tempo register TMP is changed, a new Processing such as updating the display of the tempo of the automatic accompaniment on the liquid crystal display panel 22 based on the tempo register TMP of
It returns to the main routine of FIG.

In the main routine of FIG. 3, when it is determined that no panel event has occurred as a result of the determination processing in S20 (S20: NO), the process directly proceeds to S40 without performing S30. In S40, the keyboard scanning circuit is caused to scan the keyboard 12 to check whether a key event has occurred. If it is determined that a key event has occurred (S40: YES), key-on / off information is created and stored in the RAM 6, and key-on / off information is generated.
The tone generation circuit 14 is caused to perform sound generation or mute processing based on the OFF information (S50). On the other hand, if no key event has occurred (S40: NO), the process directly proceeds to S60 without performing S50.

In S60, it is determined whether or not automatic accompaniment should be started, that is, whether or not automatic accompaniment flag RUN = "1". Then, when it is determined that the automatic accompaniment flag RUN = “1” (S60: YES), the automatic accompaniment data stored in the ROM 4 is read out, and an automatic accompaniment process for performing processing such as sound generation and mute is performed based on the data. Execute (S7
0). Processing such as sound generation and mute in the automatic accompaniment is performed with reference to a beat counter BEAT and a bar counter BAR which are incremented by an interrupt signal input from the timer 8 to an interrupt input terminal INT of the CPU 2. Next, a control process for increasing the beat counter BEAT and the bar counter BAR will be described based on a timer interrupt process shown in FIG.

The timer interrupt processing is started each time the value of the down counter set in the timer 8 becomes "0" and an interrupt signal is input from the timer 8 to the interrupt input terminal INT. When this process is started, first, it is determined whether or not the automatic accompaniment flag RUN = "1" (S31).
0). When it is determined that the automatic accompaniment flag RUN is not "1" (S310: NO), the timer interrupt processing is immediately terminated. However, when it is determined that the automatic accompaniment flag RUN is "1" (S310: YES), the clock counter is set. CLOC
K is incremented by "1" (S320), and the clock counter C
It is determined whether or not the LOCK is “96” or more (S3)
30). If it is not determined that the clock counter CLOCK is equal to or greater than "96" (S330: NO), the timer interrupt processing is immediately terminated.
When it is determined that the LOCK is equal to or greater than "96" (S33)
0: YES), the beat counter BEAT is increased by "1" and the clock counter CLOCK is reset to "0" (S340), and the beat counter BEAT =
It is determined whether it is "4" (S350). If it is not determined that the beat counter BEAT is "4" (S350: NO), the timer interrupt processing is immediately terminated. On the other hand, when it is determined that the beat counter BEAT is "4" (S350: YES), the bar counter BAR is increased by "1" and the beat counter BEA is increased.
T is reset to "0" (S360).

That is, the clock counter CLOCK, the beat counter BEAT, and the bar counter BAR are counters which are incremented at a timing at which the timer interrupt processing is started when the automatic accompaniment flag RUN is "1". The CLOCK is incremented a predetermined number of times (in this embodiment, 96 times) and one beat (beat counter BEA)
T), and every time the beat counter BEAT is incremented a predetermined number of times (four times in this embodiment), the value of the bar counter BAR is incremented (that is, the bar is counted).

Now, at step S360, the beat counter BEA
After "0" is set to T, the flow shifts to S370 to determine whether or not the event flag EVENT = "1".
If it is not determined that the event flag EVENT = "1" (S370: NO), the timer interrupt process is immediately terminated. On the other hand, the event flag EVENT =
If it is determined to be "1" (S370: YES), the event flag EVENT is reset to "0" (S380), and the initial value of the down counter is set based on the tempo register TMP (S390).

That is, the state in which the value of the tempo register TMP has been changed by the preset tempo switch 26 (ie,
If the event flag is set to EVENT = “1”),
At the timing when the value of the bar counter BAR is incremented, the initial value of the down counter is revised based on the value of the tempo register TMP, and the tempo of the automatic accompaniment is changed.

In S70, the clock counter CLOCK and the beat counter B controlled as described above are used.
The automatic accompaniment process is performed with reference to the values of the EAT and the bar counter BAR.
Of the automatic accompaniment data stored in the. In the automatic accompaniment data, for example, a key number indicating a pitch, initial touch data indicating the intensity of a musical tone, and other data processing to be subjected to automatic accompaniment processing, and a step time indicating a timing to be processed are recorded. This step time and the clock counter CLO
CK, beat counter BEAT and bar counter BA
By comparing with a step time derived from the value of R, processing based on the automatic accompaniment data (for example,
Sound, mute, tone change, etc.). If it is determined that the two step times match and it is time to process, the process according to the read automatic accompaniment data is performed, but if they do not match, nothing is performed and the process ends. Thus, in the automatic accompaniment processing, the automatic accompaniment data and the clock counter CLOCK,
Processing is performed based on the values of the beat counter BEAT and the bar counter BAR. After S70 ends, the process moves to S80.

In S60, the automatic accompaniment flag RUN =
If it is determined that it is not “1” (S60: NO), S
The process proceeds to S80 without performing step S70. In S80,
Data input / output via the I / F circuit 20 and the FDD 18
Performs "other processing" such as reading / writing of FD by S2
Return to 0.

As described above, in the electronic musical instrument of this embodiment, when the incrementer 28 is operated, the operation is performed according to the operation on the incrementer 28 (ie, the rotation operation in the + direction or the-direction). When the tempo of the automatic accompaniment is increased or decreased and the preset tempo switch 26 is operated, the tempo of the automatic accompaniment is set as the tempo of the automatic accompaniment at the timing when the bar counter BAR advances (that is, when the end of the bar is detected). Preset tempo switch 2
The preset tempo corresponding to No. 6 is set. Therefore, according to the electronic musical instrument of this embodiment, the incrementer 28
, The tempo of the automatic accompaniment can be gradually increased or decreased in real time. By operating the preset tempo switch 26, the tempo can be changed at the beginning of the bar without discomfort. That is, the tempo of the automatic accompaniment is adjusted at an appropriate timing in accordance with the tempo change mode, so that a variety of automatic accompaniments can be performed.

When the preset tempo switch 26 is operated, the preset tempo is temporarily stored in the tempo register TMP, and the preset tempo stored in the tempo register TMP is stored at the subsequent timing when the bar counter BAR is incremented. The tempo of the automatic accompaniment is set. If the incrementer 28 is operated before the preset tempo stored in the tempo register TMP is set as the tempo of the automatic accompaniment,
In response to the operation on the incrementer 28, the value of the tempo register TMP (ie, the preset tempo) is immediately
Increase or decrease. Therefore, if you want to quickly change the tempo from the next bar, even if the target tempo is not set as a preset tempo, after operating a preset tempo setting operator with a preset tempo close to it, By operating the tempo increasing / decreasing operator, the performance information can be reproduced at more various tempos, which is preferable.

In this embodiment, the incrementer 2
8 corresponds to a tempo increase / decrease operator, and the preset tempo switch 26 corresponds to a preset tempo setting operator. Further, the ROM 4 corresponds to the performance information storage means, and S210,
S220, S240 to S260, S280 and S37
The processing of 0 to S390 corresponds to processing as tempo control means, and the processing of S230 and S270 corresponds to processing as increase / decrease prohibition means. Further, the tone generating circuit 14, the assignment memory 14a, the sound system 16 and the S70
Constitutes the performance information reproducing means, and S310 to S36
0 and the timer 8 constitute bar detecting means,
60, the processing of S170 and the tempo register TMP constitute temporary storage means.

As described above, one embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and can take various aspects. For example, in the performance information reproducing apparatus of the above embodiment, the description has been made assuming that the incrementer 28 is used as the tempo increasing / decreasing operator. However, the present invention is not limited to this. For example, a so-called bender wheel, a data slider, a pair of buttons Up-down switches composed of switches may be used.

In the above embodiment, the performance information (automatic accompaniment data) stored in the ROM 4 has been described. However, the present invention is not limited to this.
D may be read out through the FDD 18 and played back, or the I / F circuit 20
The MIDI data read via the CPU may be reproduced.

In the performance information reproducing apparatus of the above embodiment, when the clock counter CLOCK is increased to a constant value ("96" in this embodiment), the beat counter BE
The AT is increased by "1", but is not limited to this. For example, a clock counter CLOCK required to increase the beat counter BEAT by "1" based on performance information to be reproduced or an input to the panel 10.
May be set. The same applies to the relationship between the beat counter BEAT and the bar counter BAR. In this embodiment, when the beat counter BEAT is increased to a constant value (“4” in the embodiment), the bar counter BAR increases by “1”. For example, based on performance information to be reproduced or an input to the panel 10,
The value of the beat counter BEAT necessary to increase the bar counter BAR by "1" may be set.

In the above embodiment, the end of the bar is detected based on the beat counter BEAT stepped by the operation of the timer 8. However, the present invention is not limited to this.
When information indicating the end timing of a measure is recorded in the performance information, the end of the measure may be detected by detecting the information.

In the performance information reproducing apparatus of the above embodiment, the tempo register TMP set by the pressed preset tempo switch 26 is not changed until the bar changes for the first time after the preset tempo switch 26 is pressed.
Has been described as being able to be increased or decreased by the incrementer 28. And the tempo register TMP which is the increase / decrease result
, The initial value of the down counter is set to change the tempo of the automatic accompaniment. However, the present invention is not limited to this, and instead of the incrementer corresponding processing shown in FIG.
For example, processing as shown in FIG. 7 may be performed. Hereinafter, the incrementer correspondence processing shown in FIG. 7 will be described.

When the incrementer corresponding processing is started, it is first determined whether or not tempo increment has been performed (S410). Here, if it is determined that the tempo is not incremented (S410: NO), the process proceeds to S450. If it is determined that the tempo is incremented (S410: YES), the event flag EV is further increased.
It is determined whether ENT = "1" (S420).
Here, when it is determined that the event flag EVENT = "1" (S420: YES), the process proceeds to S450, but when it is determined that the event flag EVENT = "1" is not (S420: NO), the tempo register is determined. TMP
Is increased by "1" (S430), and the initial value of the down counter is set based on the tempo register TMP (S440), and the flow shifts to S450.

In S450, it is determined whether or not tempo decrement has been performed. Here, if it is determined that the tempo is not incremented (S450: NO), the process returns to the panel event process. If it is determined that the tempo is decremented (S450: YES), the event flag EVENT = "1" is further set. It is determined whether or not (S46)
0). If it is determined that the event flag EVENT = "1" (S460: YES), the process returns to the panel event process. If it is determined that the event flag EVENT is not "1" (S460: NO), the tempo register TMP is set. Is decreased by "1" (S470), the initial value of the down counter is set based on the tempo register TMP (S480), and the process returns to the panel event process. That is, in the incrementer-adaptive processing of FIG. 7, when the preset tempo switch 26 is pressed and the preset tempo is set in the tempo register TMP, the performance proceeds to the beginning of the next bar and the tempo register TMP Until the initial value of the down counter is set based on the value (that is, the preset tempo is set as the playback tempo), the tempo register TMP cannot be increased or decreased by the incrementer 28. Even in this case, the operation of the tempo increase / decrease operator is erroneously continued despite the movement to the next bar, and the performance information is reproduced at a different tempo from the preset tempo originally desired by the user. Can be prevented.

In this modified example, the processing of S420 and S460 corresponds to the processing as increase / decrease inhibiting means, and S410, S430 to S450, S470 and S470
The process of 480 corresponds to the process as tempo control means.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an electrical configuration of an electronic musical instrument to which a performance information reproducing device according to an embodiment of the present invention is applied.

FIG. 2 is an explanatory view showing a panel of the electronic musical instrument according to one embodiment.

FIG. 3 is a flowchart illustrating a main routine executed by the electronic musical instrument according to the embodiment.

FIG. 4 is a flowchart illustrating a panel event process executed by the electronic musical instrument according to the embodiment.

FIG. 5 is a flowchart illustrating an incrementer-compatible process executed by the electronic musical instrument according to the embodiment;

FIG. 6 is a flowchart illustrating a timer interrupt process executed by the electronic musical instrument according to the embodiment;

FIG. 7 is a flowchart illustrating an incrementer-compatible process performed by an electronic musical instrument according to a modified example.

[Explanation of symbols]

2 CPU, 4 ROM, 6 RAM, 8 timer, 1
4 ... tone generation circuit, 14a ... assignment memory, 16
... Sound system, 26 ... Preset tempo switch, 28 ... Incrementer, TMP ... Tempo register.

Claims (3)

[Claims] 1. Performance information storage means for storing performance information; performance information reproduction means for reproducing performance information stored in the performance information storage means; and control of a tempo of reproduction of performance information by the performance information reproduction means. A performance information reproducing device comprising: a tempo control means for reproducing the performance information at the tempo of the reproduction, wherein the performance information reproducing means detects the end of the measure in synchronization with the reproduction. Means, a tempo increase / decrease manipulator for instructing increase / decrease of the reproduction tempo by external operation, and a preset tempo setting manipulator for setting a predetermined preset tempo as the reproduction tempo by external operation And the tempo control means increases the tempo of the reproduction immediately upon operation of the tempo increase / decrease operator when the tempo increase / decrease operator is operated. Then, when the preset tempo setting operator is operated, a preset tempo is set as the reproduction tempo at a timing when the measure detecting means detects the end of the measure after the operation. apparatus. 2. The performance information reproducing means according to claim 1, wherein when the preset tempo setting operation element is operated, after the operation, the tempo control means sets a preset tempo as the reproduction tempo. A performance information reproducing apparatus comprising: an increase / decrease inhibiting means for inhibiting the tempo control means from increasing / decreasing the tempo of the reproduction in response to an operation on the tempo increasing / decreasing operator during a period. 3. The performance information reproducing apparatus according to claim 2, further comprising: temporary storage means for temporarily storing a preset tempo when the preset tempo setting operator is operated, wherein the tempo control means comprises: When the preset tempo setting operator is operated, after the operation, the preset tempo stored in the temporary storage means is set as the reproduction tempo at a timing at which the measure detecting means detects the end of the measure. After the preset tempo setting operator is operated and before the preset tempo stored in the temporary storage means is set as the reproduction tempo, if the tempo increase / decrease operator is further operated, the temporary storage means A performance information reproducing apparatus, which increases or decreases the preset tempo stored in the control element according to an operation of the tempo increase / decrease operator.