JPH01167798A - Automatic rhythm device - Google Patents

Abstract

PURPOSE:To restart a rhythm sound while maintaining the continuity of a rhythm after the rhythm sound is stopped by controlling the timing of the generation of the rhythm sound according to whether or not a sound generation start indication is made by a start indicating means a prescribed time after a stop indication is made by a stop indicating means. CONSTITUTION:According to whether or not the sound generation start indication is made by the start indicating means the prescribed timing after the stop indication is made by the stop indicating means, the rhythm sound is generated correspondingly to rhythm progress at the time of the stop indication when before or from an initial state when after. Consequently, the rhythm sound can be restarted corresponding to the rhythm progress at the time of the rhythm stop before the specific time is elapsed after the stop of the rhythm sound or from the initial state the prescribed time later.

Description

[Detailed description of the invention]

"Industrial Application Field" This invention relates to an autorhythm device that automatically generates rhythm sounds. "Prior Art" In a conventional autorhythm device, the following mode is known as a mode for restarting a rhythm sound after it has been stopped for a while. ■Press the stop switch to completely turn off the rhythm sound, and then press the start switch to restart the rhythm sound from the beginning of the rhythm pattern. ■When you press the rhythm break switch, the rhythm sound will pause and the rhythm counter will continue counting. Then, the rhythm sound automatically restarts at the timing of the next bar line. ■Press the stop switch to stop the rhythm sound, and then press the keyboard to restart the rhythm sound from the beginning of the rhythm pattern. ``Problems to be solved by the invention'' By the way, in stage performances, etc., when the rhythm sound is stopped, if the audience is in good spirits, the rhythm can be played while maintaining the continuity of the rhythm from the point when it stopped. You may want to restart the sound. However, in the case of the above-mentioned modes (1) and (2), the continuity of the rhythm sound is lost, and in the case of the above-mentioned mode (2), there is a drawback that a restart is restarted even when a restart is not desired. Therefore, this invention makes it possible to restart the rhythm sound while maintaining the continuity of the rhythm after stopping the rhythm sound, and furthermore, it is possible to completely stop the rhythm sound after a certain period of time has elapsed. The purpose is to provide an autorhythm device. "Means for Solving Problems" This invention provides a rhythm sound generating means for generating rhythm sounds;
a start instruction means for instructing the start of generation of the rhythm sound; a stop instruction means for instructing the stop of the rhythm sound;
Depending on whether the sound generation start instruction by the start instruction means is before or after a predetermined time has elapsed after the stop instruction by the stop instruction means, if it is before, a rhythm sound is generated in accordance with the rhythm progression at the time of the stop instruction; If it is later, it is characterized by comprising a rhythm sound control means for generating rhythm sound from an initial state. "Operation" According to the present invention, depending on whether the start instruction by the start instruction means is after a predetermined timing has elapsed after the stop instruction by the stop instruction means or if it is an elapsed time, if it is before, the sound generation is performed in a rhythm corresponding to the rhythm progression at the time of the stop instruction. Generates a sound, and if later, generates a rhythm sound from the initial state. With this configuration, it is possible to restart the rhythm sound in response to the rhythm progression at the time the rhythm stopped, as long as the predetermined time has not elapsed after the rhythm sound stopped, and even after the predetermined time has elapsed. For example, it becomes possible to generate rhythm sounds from an initial state. "Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an electronic organ to which an autorhythm device according to an embodiment of the present invention is applied.

【overall structure】

In FIG. 1, reference numeral 1 represents a keyboard, and 2 represents a key switch circuit. The key switch circuit 2 includes a plurality of key switches for detecting the on/off state of each key on the keyboard I, and an interface circuit that connects the output of each key switch to a pass line B. 3 is a rhythm selection switch, a tone selection switch, etc. provided on the panel surface,
An operator switch circuit includes an interface circuit that connects the output of each switch to a pass line, and 4 is a display control circuit that controls lighting of a display provided on the panel surface. Figure 2 is a diagram showing an example of the configuration of the panel surface. In this figure, 5 is a rhythm selection switch, 6 is a tone selection switch, 7 is a rhythm start start, 8 is a rhythm stop switch, and 9.9.9 is an effect. Setting switch, 10
are ending switches, ll-13 are fill-in switches, 14 is a tempo up switch, and 15 is a tempo down switch. Further, 17 to 20 are LEDs (light emitting diodes) for tempo display, and 21 to 24 are LEDs for switch operation display. Next, 27 in FIG. 1 is a CPU (central processing unit) that controls each part of the apparatus, 28 is a program memory in which the program of the CPU 27 is stored, and 29 is a working memory. In this working memory 29, various registers and flags, which will be described later, are set. 30 is a tempo oscillator, which outputs to the CPU 27 a pulse signal TP of a constant period, which is the basis of the tempo of the rhythm sound. This pulse signal TP causes an interrupt to the CPO 27. Further, the period of the pulse signal TP is determined according to the tempo data TD supplied from the CPU 27 via the pass line B. Reference numeral 31 denotes a rhythm pattern memory in which rhythm patterns used when generating rhythm sounds are stored. This rhythm pattern memory 3! A set of rhythm patterns is stored in advance in correspondence with each rhythm type (samba, slow rock, etc.), and one of these sets of rhythm patterns is supplied via pass line B. It is selected by the rhythm selection data RSD. Furthermore, each rhythm pattern set is composed of 48 steps, and each step is read out by tempo clock data TOLD supplied via pass line B. 32 is a rhythm sound signal generation circuit. This rhythm sound signal generation circuit 32 has a plurality of rhythm sound sources, and each rhythm sound source is driven by the rhythm pattern read out from the rhythm pattern memory 31. Rhythm sound signals output from each rhythm sound source are mixed and supplied to an amplifier 34/\. 33 is a musical tone signal generation circuit, which generates a musical tone signal based on key operations on the keyboard (■). The musical tone signal output from the musical tone signal generation circuit 33 is sent to the amplifier 3 together with the rhythm tone signal output from the rhythm tone signal generation circuit 32.
4, is amplified by this amplifier 34, and is emitted as a musical tone from a speaker 35.

[Explanation of flags and registers]

Next, the flags and registers set in the working memory 29 will be explained. (1) Rhythm run flag r (UN) This flag RUN is set when an automatic rhythm sound is generated.
This is a flag that becomes 0 when no occurrence occurs. (2) Tempo counter TCNT In this electronic organ, one measure is divided into 48 timings, and each timing is divided into rhythm pattern memory 3I.
The rhythm pattern is read out from the rhythm sound signal generating circuit 32 and supplied to the rhythm sound signal generation circuit 32. The above timing is determined by the pulse signal TP output from the tempo oscillator 30, and the tempo counter TCNT counts this pulse signal TP. This tempo counter TCNT is reset at the timing of the bar line (rO
J), and thereafter counts up to "47". (3) Rhythm break flag R) (YBK) In this electronic organ, when the rhythm sound is stopped, 1. The sound is turned off, but the tempo counter TCNT continues counting the pulse signal TP for a predetermined time, and When the time has elapsed, the tempo counter TCNT is cleared (the rhythm is completely stopped). Hereinafter, the state in which the tempo counter TCNT is counting while the rhythm sound is off will be referred to as a break state. When the start switch 7 is pressed in this break state, the rhythm sound can be restarted while maintaining rhythm continuity.The rhythm break flag RHYBK is set to "1" in the break state. (4) Break time register BKTIME The break state described above is in principle until the end of the measure. That is, for example, if the rhythm stop switch 8 is operated at time t1 shown in FIG. , the break state ends at the bar line BAR at time t3.In this case, the rhythm break flag RHYBK becomes as shown in the figure (b).The numerical value in the figure (a) is the count value of the tempo counter TCNT. However, if the break state becomes extremely short according to the above principle, that is, if the count value of the tempo counter TCNT is between 42 and 47 (
When the rhythm stop switch 8 is operated at a time (see symbol Ta), the break state continues until the next bar line BAR (time t4). In this case, the rhythm break flag RHYBK becomes as shown in FIG. Therefore, the break time register BKT is a register in which data indicating whether the break time (duration time of the break state) is shown in FIG. 3 (b) or (c) is written.
IME, and in the case of (b), register BKT I
NJ is written to ME, and in the case of (c), register B
"2" is written to KTIME. (5) Fill-in pattern register FILL fill-in pattern refers to a rhythm pattern for the introduction section. 1st
In the electronic organ shown in the figure, three fill-in patterns are stored in the rhythm pattern memory 3! When one of the fill-in switches tt-t3 is pressed, the fill-in pattern corresponding to the pressed switch is read out and output to the rhythm sound signal generation circuit 32. In this case, when the fill-in switch 11 is pressed, rlJ
However, when switch I2 is pressed, "2" is set to switch 1.
When 3 is pressed, "3" is written into each fill-in pattern register FILL, and the fill-in pattern in the rhythm pattern memory 3 is read out based on the data in this register FILL. (6) Fill-in time register FITIME The duration of the fill-in pattern is until the next bar line BAR or the next next bar line BAR, similar to the aforementioned break time. In this fill-in time register FITIME, "1" is written if the bar line is up to the next bar line BAR, and "2" is written if it is up to the next bar line BAR.

【motion】

Next, the operation of the apparatus having the above configuration will be explained with reference to the flowcharts shown in FIGS. 4 to 8. (1) Main Routine FIG. 4 is a flowchart showing the main routine of the CPU 27. When the device is powered on, first, initial setting processing in step Sal is performed, and the registers and flags set in the working memory 29 and the registers of each part of the device are cleared. Next step Sa2
The on/off state of each key on the keyboard L and the operating state of each switch on the operation panel are sequentially checked. Next, in step Sa3, it is determined whether an event (change) has occurred in the operation state of the keyboard key or operation switch. If the result of this determination is "NO", the process returns to step Sa2. In addition, in the case of "rYES", the process returns to step Sa2 after performing each process described below depending on the key or switch in which the event occurred. ◇Keyboard keys, tone selection switch 6, effect setting switch 9
(Step 5a4) When a keyboard key or switch 6.9 event is detected, data indicating the key code of the detected and issued key and whether it is on or off, or data indicating the type of the detected switch and the operating state is output to the musical tone signal generation circuit 33. ◇Rhythm selection switch 5, tempo up/down switch 14.15 (Step 5a5) Rhythm selection switch 5
When this event is detected, data indicating the new operating state of the rhythm selection switch 5 is outputted to the rhythm pattern data memory 31 as the rhythm selection data RSD. In addition, when an event of the tempo up/down switch 14 or 15 is detected, the operated switch 14 or 15
The period of the output pulse signal TP of the tempo oscillator 30 is changed accordingly. ◇Rhythm start switch 7 (step 5a6) When the ON event of the rhythm start switch 7 is detected, the rhythm start process shown in FIG. 5 is performed. That is, first, the process advances to step sbt, and it is determined whether the rhythm break flag RHYBK is "0" or not. If the result of this judgment is YESJ, that is, if the rhythm break state is not present, the process advances to step Sb2, where the rhythm run flag is set to "1" and the tempo counter TCNT is cleared. On the other hand, if the determination result in step sbt is rNOJ, that is, if the rhythm break state is currently occurring, the process advances to step Sb3, where the rhythm break flag RHYBK is reset and the break time register BKTIME is cleared. ◇Rhythm stop switch 8 (S a7) When the on event of the rhythm stop switch 8 is detected, the sixth
The rhythm stop process shown in the figure is performed. That is,
First, proceed to step Scl and set the rhythm run flag RUN.
It is determined whether or not is "1". If the result of this judgment is rNOJ, the process returns to step 5a2 (Fig. 4), and r
In the case of Y E S J, the process proceeds to step Sc2. In step Sc2, the rhythm break flag RHYBK is “1”.
". Next, when the process advances to step Sc3, it is determined whether the data in the tempo counter TCNT is greater than or equal to [421. If the result of this determination is "NO," the process advances to step Sc4. Break time register BK
"1" is written in TIME, and if "YESJ", proceed to step Sc5 and write the break time register BKT.
"2" is written in the IME. And step S
Return to a2. ◇Fill-in switches 11-13 (step 5a8) When any of the fill-in switches 11-13 is operated, the fill-in process shown in FIG. 7 is performed. That is, first, proceed to step Sdl, and set the rhythm run flag RU.
It is determined whether N is "1" or not. If the judgment result is rNOJ, return to step 5a2 (FIG. 4),
If rYESJ, the process advances to step Sd2. In step Sd2, it is detected which of the fill-in switches 11 to 13 has been operated. And switch! If l has been operated, the process advances to step Sd3, where data IN is written into the fill-in pattern register FILL and the LED 22 (FIG. 2) is turned on. Further, if the switch 12 is operated, step Sd
4, data "2" is written in the fill-in pattern register FILL, and if the LED 23 is lit and the switch 13 is operated, the process goes to step Sd5.
Then, data "3" is written into the fill-in pattern register FILL, and the LED 24 is turned on. Then, the process advances to step Sd6. In step Sd6, it is determined whether the data in the tempo counter TCNT is greater than "42". The result of this judgment is “YE”.
In the case of SJ, the process advances to step Sd7, where "2" is written in the fill-in time register FITIME, and "N
O'', the process advances to step Sd8, and rN is written into the fill-in time register FITIME. Then, the process returns to step Sa2 in FIG. In this way, when any of the fill-in switches 11 to 13 is operated, the fill-in pattern register FILL and fill-in time register FITI ME are set only when the rhythm run flag RUN is "1'." Ending switch 10 (step 5a9) When the on event of the ending switch 10 is detected, the ending pattern stored in advance in the rhythm pattern memory 3! is read out, and the rhythm sound signal generation circuit 32
Output to. As a result, a rhythm sound based on the ending pattern is generated. (2) Rhythm included processing Every time the pulse signal TP is output from the tempo oscillator 30, the CPU 27 is interrupted. Rhythm interwoven processing based on this interruption will be explained with reference to FIG. As mentioned above, the pulse signal TP has 48
A pulse is generated. First, when proceeding to step Sel in FIG. 8, it is determined whether the rhythm run flag RUN is "!". If the result of this judgment is rNOJ, the process returns to the main routine (FIG. 4), and if the result is "YES", the process proceeds to step Se2. In step Se2, it is determined whether the rhythm break flag Rt (YBK) is "1" or not. If the result of this determination is "NO", that is, if the flag RUN is "1" and , if it is not in the break state, the process proceeds to step Se3, and rhythm sound signal generation processing is performed.That is, first, if any of the data NJ to r3J is set in the fill-in pattern register FILL, the fill-in pattern register FILL is set in the fill-in pattern register FILL. The rhythm pattern is read from the rhythm pattern memory 3I based on the data in the tempo counter TCNT and the data in the tempo counter TCNT, and is output to the rhythm sound signal generation circuit 32.Also, if the fill-in pattern register FILL has been cleared, the currently set A rhythm pattern is read out from the rhythm pattern memory 31 based on the type of rhythm being played and the data in the tempo counter TCNT, and is output to the rhythm sound signal generation circuit 32. On the other hand, if the determination result in step Se2 is "NO", The process jumps to step Se3 and proceeds to step Se4. In step Se4, the tempo counter TCNT is incremented. When the process proceeds to step Se5, the tempo display LEDs 17 to 20 (FIG. 2) change to the tempo counter TCNT. is lit based on the data in, i.e.
The data in the tempo counter TCNT is rOJ ~ “11”
When , LED l 7 is on, and when it's "12" to "23", it's L
When ED 18 is "24" to "35", LED 19
However, when the number is "36J" to "47", the LEDs 20 are lit. Next, when the process advances to step Se6, the data in the tempo counter TCNT is "48" indicating a bar line.
It is determined whether or not. The result of this judgment is
If NO, return to the main routine. Further, if the judgment result in step Se6 is rY E S J, that is, if the timing of the bar line has come, step Se7
Proceed to. In step Se7, the tempo counter TCNT is cleared. Next, when the process advances to step Se8, the data in the break time register BKTIME is checked. If the data is "0", the process proceeds to step Se9, and if it is "I", the process proceeds to step 5elO. In step Sel O, break time register BK
T IME, rhythm break flag RHYBK, and rhythm run flag RUN are each cleared, and LED 1
7 to 20 are turned off. As a result, the break state ends and the rhythm sound completely stops. Also,
The data in the break time register BKT IME is “
2", the process advances to step Sel I, where the data in the same register BKTIME is rewritten to rN,
Then, the process advances to step Se9. In step Se9, fill-in time register FIT
The data in the IME is checked. If the data is "0", the process returns to the main routine, and if it is IN, the process proceeds to step 5e12. In step 5e12, fill-in pattern register F
Both ILL and fill-in time register FITIME are cleared, and LEDs 22-24 are turned off. This ends the fill-in state (introduction state). If the data in the fill-in time register FITIME is "2", the process advances to step 5e13, and the data in the fill-in time register FITIME is rewritten to IN. Then return to the main routine. As described above, in the embodiment shown in FIG. 1, when the rhythm stop switch 8 is operated, the rhythm break flag R
HYBK is set to "1" and the break time register BKTIME7! ll'y and enters the break state (see Figure 6). In this break state, the rhythm run flag RUN is at "1", but the step Se2. As is clear from Se3, rhythm sound signal generation processing is not performed. Therefore, the rhythm sound is in a stopped state, and the tempo counter TCNT continues to count up (step 5e4 in FIG. 8). Then, in this break state, the start switch 7
When is operated, a rhythm sound based on the current tempo counter TCNT is generated (see step Sb3 in FIG. 5).
. On the other hand, when the start switch 7 is operated when the rhythm run flag RUN is not in the break state, that is, when the rhythm run flag RUN is "0", the tempo counter TCNT is cleared as shown in step Sb2 of FIG. As a result, the rhythm sound starts from the initial state. In the above embodiment, the restart from the break state is performed based on the operation of the start switch 7, but instead of this, the restart from the break state is performed based on the operation of the fill-in switch If-13. You can. In this case, the rhythm start process shown in FIG. 5 is only RUN4-1"TCNT←"0," while the fill-in process shown in FIG. 7 is as shown in FIG. 9. The process in FIG. 9 differs from the process in FIG. 7 in step Sd9. Processing of SdlO, i.e.
The difference is that clearing processing of the rhythm break flag RHYnK and break time register BKTIME is added. Further, in the above embodiment, the tempo counter TCNT continues counting in the break state, but instead, the tempo counter TCNT does not count up after the stop switch 8 is operated. The count value at the time the stop switch 8 was operated may be held as is. In this case, when the start switch 7 is operated in the break state, the rhythm sound restarts from the previous stop point. In this specification, "in response to" in the sentence "in response to the rhythm progression at the time of the stop instruction" refers to the case where the tempo counter TCNT continues to count up in the break state, and the case where the up-count stops. This shall include both cases. Furthermore, the restart of the rhythm sound is not limited to the start switch or the fill-in switch, but may be performed by, for example, a pad switch (hand percussion switch), a rhythm variation switch, or the like. Alternatively, the break state may be entered at the time when the rhythm performance based on the ending pattern is completed. "Effects of the Invention" As explained above, according to the present invention, there is provided a rhythm sound generating means for generating a rhythm sound, a start instruction means for instructing the start of generation of the rhythm sound, and a start instruction means for instructing the stop of the rhythm sound. A stop instruction means and a rhythm sound corresponding to the rhythm progression at the time of the stop instruction depending on whether the start instruction by the start instruction means is before or after a predetermined time period has elapsed as a stop instruction by the stop instruction means. Since the present invention is provided with a rhythm sound control means that generates a rhythm sound from an initial state if it is later generated, it is possible to restart the rhythm sound while maintaining the continuity of the rhythm after the rhythm sound has been stopped. After a certain period of time has elapsed, the rhythm sound can be completely stopped. As a result, it is possible to obtain the effect that the playing effect of rhythm sounds can be improved more than before.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
FIG. 2 is a diagram showing the configuration of the panel surface in the same embodiment;
FIG. 3 is a diagram showing the timing of the rhythm break flag RHYBK, FIGS. 4 to 8 are flowcharts for explaining the operation of the same embodiment, and FIG. 9 is a flowchart for explaining a modification of the same embodiment. It is. 7...Rhythm start switch, 8...
・Rhythm stop switch, 27 ・Old...cPU, 28
・Old...Program memory, 29...Working memory, 32...Rhythm sound signal generation circuit,

Claims (1)

[Scope of Claims] Rhythm sound generation means for generating a rhythm sound; start instruction means for instructing the start of generation of the rhythm sound; stop instruction means for instructing the stop of the rhythm sound; and sound generation by the start instruction means. Depending on whether the start instruction is before or after a predetermined period of time has elapsed after the stop instruction by the stop instruction means, if it is before, a rhythm sound is generated in accordance with the rhythm progression at the time of the stop instruction, and if it is after, the rhythm sound is generated from the initial state. An autorhythm device comprising: a rhythm sound control means for generating;