JPH08185169A - Musical tone generator - Google Patents

Abstract

PURPOSE: To make it possible to obtain the beat synchronization of phrases and automatic accompaniment and to generate the phrases at the timing desired by a user in the case where pads are pressed in synchronization with the automatic accompaniment with an electronic musical instrument, etc. CONSTITUTION: When the pad 20 is pressed during the automatic accompaniment playing and if the timing of this time is before '24' of the value of a counter T for accompaniment, the reproduction of the phrase data corresponding to the period from the top of this beat until the pad 20 is pressed is not executed and the reproduction of the subsequent phrase data is executed in synchronization with the timing when the pad 20 is pressed. On the other hand, if the timing when the pad 20 is pressed is after '24' of the value of the counter T for accompaniment, the reproduction of the phrase data is started in synchronization with the top of the next beat of the automatic accompaniment. As a result, the beat synchronization of, for example, the phrases and the automatic accompaniment is obtd. and the start of the reproduction of the phrases at the optimum timing is possible in the case of operating the pad 20 in synchronization with the automatic accompaniment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tone generator, and more particularly to a tone generator having an automatic accompaniment function.

[0002]

2. Description of the Related Art Conventionally, there are some musical tone generators provided in electronic musical instruments and the like, which are provided with a pad type operator in addition to an ordinary performance input device (keyboard or the like). If this pad type operator (hereinafter referred to as a pad) is one that generates a phrase, for example, by pressing this pad, the phrase data corresponding to the pad information is read from the pad data memory and supplied to the tone control means. It As a result, the phrase is pronounced based on the read music data.

[0003]

By the way, in the above-mentioned conventional musical tone generating apparatus, since the phrase data is read from the beginning in synchronization with the timing of pressing the pad, the pad is pressed in accordance with the automatic accompaniment. In this case, if the pressing timing is not correct, there is a problem that the beginning of the beat of the automatic accompaniment and the beginning of the beat of the phrase are slightly deviated from each other and effective performance cannot be performed. For example, when the pad is pressed at the timing shown in FIG. 10, the phrase data is reproduced from the beginning in synchronization with the third clock from the beginning of the automatic accompaniment beat.

Conventionally, as a solution to such a drawback, there is one in which the reproduction start timing of the phrase data is set to the head of the next beat or the head of the next bar of the automatic accompaniment. When the pad is pressed at the timing shown by 10, the phrase data is not reproduced at the timing intended by the user, despite the slight operation delay with respect to the beginning of the beat of the automatic accompaniment. I have to wait until the beat or the next bar,
It wasn't always effective.

Therefore, the present invention is a musical tone generating apparatus capable of synchronizing the beat of a phrase with the automatic accompaniment when the pad is pressed in accordance with the automatic accompaniment, and generating the phrase at the timing intended by the user. Is intended to provide.

[0006]

In order to achieve the above object, a musical tone generating apparatus according to the invention of claim 1 comprises an accompaniment generating means for generating an accompaniment based on accompaniment data, and a plurality of operators.
Storage means for storing a plurality of music data, reproduction means for reading out and reproducing music data corresponding to an operated one of the plurality of operators from the storage means, and during accompaniment generation by the accompaniment generation means. Operation timing detection means for detecting the operation timing of the plurality of operators, determination means for determining whether the operation timing detected by the operation timing detection means is before the reference timing during the beat of the accompaniment, If the operation timing is determined to be before the reference timing by the determination means, the music data corresponding to the period from the beginning of the accompaniment beat to the operation timing is not reproduced and is synchronized with the operation timing. Then, a reproduction instructing means for instructing to start reproduction of subsequent music data is provided.

A preferred embodiment is, for example, claim 2
As in the invention described above, the reproduction instructing means further synchronizes with the beginning of the next beat of the accompaniment from the beginning of the music data when it is determined that the operation timing is after the reference timing. You may instruct to start reproduction. For example, like the invention of claim 3,
The musical tone generating device may be applied to an electronic musical instrument.

[0008]

In the present invention, when the operator is operated during automatic accompaniment, if the timing at that time is before the reference timing in one beat of the automatic accompaniment, the operator is operated from the beginning of that beat. The music data corresponding to the period up to is not reproduced, and the reproduction of the music data thereafter is started in synchronization with the timing at which the operator is operated. On the other hand, if the timing when the operator is operated is after the reference timing in one beat of the automatic accompaniment, the reproduction of the music data is started in synchronization with the beginning of the beat next to the automatic accompaniment. In this case, it goes without saying that the music data is reproduced from the beginning. Therefore, when operating the operator in accordance with the automatic accompaniment, for example, the phrase and the automatic accompaniment can be beat-synchronized, and the phrase can be started to be reproduced at an optimal timing, thereby enabling an effective performance. It will be possible.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. A. Configuration of Embodiment FIG. 1 is a block diagram showing the configuration of an electronic musical instrument having a musical sound generating device according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a keyboard, which detects a key pressing operation and a key pressing speed for each key and outputs performance information such as a key-on signal, a key number, a key-off signal, or a velocity indicating a pressing and releasing touch. Reference numeral 2 denotes a console panel of this electronic musical instrument, which is composed of various operation switches and a liquid crystal display section for displaying the setting states of these switches.

Among the operation switches provided on the console panel 2, for example, at least one pad 20 for instructing the start of phrase generation, a tone color switch for designating a tone color (not shown), and the start and stop of automatic accompaniment are provided. A start / stop switch for instructing is provided. Reference numeral 3 denotes a CPU having a function of controlling each part of the musical instrument and generating a performance tempo at the time of automatic accompaniment, and its operation will be described later. Reference numeral 4 denotes a ROM that stores various control programs loaded into the CPU 3 and various data used in these programs. 5 is CPU3
Is a RAM used as a work area for various registers / flag data. This RAM5
For example, the following flags are set in.

AF: Automatic accompaniment flag, start /
Each time the stop switch is pressed, it reverses. AF = 1: With automatic accompaniment instruction AF = 0: Without automatic accompaniment instruction PF: Pad flag, which is used to determine whether or not a pad has already been pressed. PF = 1: The pad has already been pressed and is reading or waiting for phrase data (waiting for the accompaniment to come to the beginning of the beat) PF = 0: The pad has not been pressed or has already been pressed Also, the reading of the phrase data is completed. tF: a phrase counter flag, which is used to determine the operation of the phrase counter t. tF = 1: Phrase counter t operation is possible tF = 0: Phrase counter t operation is not possible

Reference numeral 6 is a sound source configured by a well-known waveform memory reading method, and is provided with a normal sound source and an accompaniment sound source which generate a musical tone according to a normal melody performance. Reference numeral 7 is a waveform memory for storing waveform data of various tones by the ADPCM system, for example. An automatic accompaniment data memory 8 stores automatic accompaniment data composed of a plurality of chord parts such as a drum part and a bass part. Reference numeral 9 is a pad data memory for storing phrase data. Here, FIG. 2 is a diagram showing a data storage state of the automatic accompaniment data memory 8, and FIG. 3 is a diagram showing a data storage state of the pad data memory 9. As shown in FIG. 2, the accompaniment counter T of 0 to 47 corresponding to one value (0, 1, ...) Of the accompaniment beat counter C when the automatic accompaniment mode is set.
Is stored, and accompaniment data is stored corresponding to the accompaniment counter T. On the other hand, as shown in FIG. 3, when the pad 20 is pressed, phrase data (music data) is stored for the value of the phrase counter t. In this case, the phrase counter t is used as an address that specifies phrase data.

Returning to FIG. 1, reference numeral 10 is a D / A conversion unit for performing D / A conversion and outputting the musical sound signal W output from the sound source 6 after filtering the sound signal W to give a sound effect. 11
Is an amplifier that amplifies the analog musical tone signal supplied from the D / A conversion unit 10 and causes the speaker SP to generate a musical tone. When the pad information is generated by operating the pad 20, the CPU 3 reads the phrase data from the pad data memory 9 and outputs the phrase data to the D / A converter 10. Further, the CPU 3 reads the automatic accompaniment data from the automatic accompaniment data memory 8 and outputs it to the D / A conversion unit 10. In this case, as shown in FIG. 4, the CPU 3 controls the performance of the automatic accompaniment at a timing with one beat of 48 clocks, and when it is detected that the pad 20 is pressed during this control, the timing is 24. If it is judged that it is before the clock, if it is judged that it is after that, the phrase data is reproduced from the next beat, and if it is judged that it is before 24 clocks, the pad is pressed from the beginning of the phrase data. Deletes the data up to the point when it was played, and plays from the middle.

B. Operation of Embodiment Next, the operation of the embodiment having the above configuration will be described with reference to FIGS.
Will be described with reference to. Here, the operation of the main routine will be described as a general operation, and then the operations of various processing routines called in the main routine will be sequentially described. (A) Operation of Main Routine First, when the electronic musical instrument according to the present embodiment is powered on,
The CPU 3 loads a predetermined control program from the ROM 4 and executes the main routine shown in FIG.
The process proceeds to 2. In step SA2, various registers and flags set in the RAM 5 are reset and the sound source 6 is instructed to clear the tone generation channel register to zero. The tone generation channel register is a register provided inside the tone generator 6 and temporarily stores the tone parameter assigned to each tone generation channel under the instruction of the CPU 3.

When the initialization for initializing the various registers is completed, the CPU 3 advances the processing to the next step SA4, performs the switch processing according to the various switch operations of the console panel 2, and then advances to the step SA6, whereupon the clock is set. Performs accompaniment sound generation processing in which the accompaniment sound is generated in synchronization with. After that, the process proceeds to step SA8, for example, switch scanning is performed to detect various switch operations on the console panel 2, and pad processing is performed according to the switch setting status detected by this switch scanning. Then, subsequently, in step SA10, other processing such as updating display of the liquid crystal display unit is performed. After this, C
PU3 returns the process to step SA4, and then step S4.
By repeating A4 to SA10, the tone generator 6 is instructed to generate a musical tone according to the contents of the pad operation and the switch operation.

(B) Operation of Switch Processing Routine First, the CPU 3 determines the state of the mode switch in step SB2. In this determination, if it is determined that the normal mode is set, the process proceeds to step SB4, and normal performance processing is performed. That is, a sounding process is performed by simply playing a key on the keyboard 1. On the other hand, when it is determined that the mode switch is set to the automatic accompaniment mode, the process proceeds to step SB6, and it is determined whether or not the start / stop operation is performed. Start at this judgment /
When it is determined that the stop operation has been performed, step SB
In step 8, the value of the automatic accompaniment flag AF is inverted. That is, if the value of the automatic accompaniment flag AF is "1", it is inverted to "0" when the start / stop button is pressed. After performing the process of inverting the value of the automatic accompaniment flag AF,
In step SB10, other switch processing is performed, and then the processing ends.

(C) Automatic accompaniment processing routine After the switch processing is completed, the automatic accompaniment processing is started. First, in step SC2, it is determined whether the value of the automatic accompaniment flag AF is "1", that is, whether there is an automatic accompaniment instruction. In this determination, the value of the automatic accompaniment flag AF is "0".
That is, if it is determined that there is no automatic accompaniment instruction, the processing directly ends. On the other hand, when it is determined that the value of the automatic accompaniment flag AF is "1", that is, there is an automatic accompaniment instruction, the process proceeds to step SC4, and it is determined whether or not the previous value of the automatic accompaniment flag AF is "0". . That is, it is determined whether the automatic accompaniment instruction is the first time or the second time or later. If it is determined in this determination that the automatic accompaniment instruction is the first time, the process proceeds to step SC6, and the values of the accompaniment counter T and the accompaniment beat counter C are set to "0".

After performing this processing, the process proceeds to step SC8, and the accompaniment data is read out based on the values of the accompaniment counter T and the accompaniment beat counter C to give an automatic accompaniment instruction. If it is the first time, the accompaniment data corresponding to the value of the accompaniment beat counter C of "0" and the value of the accompaniment counter T of "0" is read. If it is determined in step SC4 that the automatic accompaniment instruction is the second or later, the process proceeds to step SC10, and it is determined whether the value of the previous accompaniment counter T and the value of the current accompaniment counter T are the same. Do. That is, it is determined whether or not the value of the accompaniment counter T is incremented in the interrupt processing routine described later. In this determination, if it is determined that the value of the accompaniment counter T has been incremented in the interrupt processing routine, the process proceeds to step SC8, and the accompaniment data is read based on the values of the accompaniment counter T and the accompaniment beat counter C to give an automatic accompaniment instruction. . On the other hand, if the interrupt processing routine determines that the value of the accompaniment counter T has not been incremented, the processing is terminated.

(D) Pad Processing Routine After the above automatic accompaniment processing is completed, the processing shifts to pad processing. First, in step SD2, it is determined whether or not there is a new pad on. If it is determined in this determination that a new pad is on, the process proceeds to step SD4, and it is determined whether or not the value of the automatic accompaniment flag AF is "1", that is, whether or not there is an automatic accompaniment instruction. In this determination, if it is determined that there is no automatic accompaniment instruction, the processing directly ends. On the other hand, if it is determined that there is an automatic accompaniment instruction, the process proceeds to step SD6.

In step SD6, it is determined whether or not the value of the pad flag PF is "1", that is, it is determined whether or not the pad has already been pressed and the phrase data is being read or is on standby. . In this determination, if it is determined that the value of the pad flag PF is not "1", the process proceeds to step SD8, and if it is determined to be "1", step S8.
Proceed to D10. When it is determined that the value of the pad flag PF is "1" and the process proceeds to step SD8, the value of the pad flag is set to "1". That is, since the pad flag is not set to "1" when the pad is turned on for the first time, it is set to "1" to read the phrase data.

After setting the value of the pad flag to "1",
In step SD12, it is determined whether or not the value of the accompaniment counter T is "24" or more, that is, it is determined whether or not it is the latter half of the accompaniment beat. In this determination, if the value of the accompaniment counter T is “24” or more, that is, the latter half of the accompaniment beat, the process is directly terminated. On the other hand, if it is determined that the value of the accompaniment counter T is "24" or less, that is, the first half of the accompaniment beat, the process proceeds to step SD14, and the value of the accompaniment counter T is set to the phrase counter t. Next, at step SD16, the phrase counter flag tF
Set the value of to "1". After making this setting, the process proceeds to step SD18, the phrase data designated by the value of the phrase counter t is read out, an automatic performance instruction is given, and then the process is terminated.

On the other hand, if it is determined in step SD2 that the pad is not on, the process proceeds to step SD20 and it is determined whether the value of the pad flag PF is "1". If it is determined in this determination that the value of the pad flag PF is "1", that is, that the pad has already been turned on (during phrase data reading or standby), the process proceeds to step SD10 described above. On the other hand, when it is determined that the value of the pad flag PF is not "1", that is, the phrase data is not being read or waiting, the process is terminated.

In step SD10, it is determined whether or not the value of the phrase counter flag tF is "1", that is, whether or not the phrase data is being read. In this judgment, phrase data is not being read,
That is, if it is determined that the accompaniment is on standby, the process proceeds to step SD22, and it is determined whether or not the value of the accompaniment counter T is "0", that is, whether or not the accompaniment is the beginning of the next beat. In this determination, if it is determined that the accompaniment is not yet at the beginning of the next beat, the process is terminated. On the other hand, if it is determined that the accompaniment is at the beginning of the next beat, the process proceeds to step SD24, and the value of the phrase counter t is set to "0". After making this setting, the process proceeds to step SD16 described above, and the phrase counter flag tF
Is set to "1", then the process proceeds to step SD18, the phrase data designated by the value of the phrase counter t is read out, an automatic performance instruction is given, and then the process is exited.

When it is determined in step SD10 that the value of the phrase counter flag tF is "1", that is, when it is determined that the phrase data is being read, the process proceeds to step SD26 and the accompaniment counter of this time is determined. It is determined whether the value of T is the same as the previous value. That is, it is determined whether or not the value of the accompaniment counter T has been incremented in the interrupt processing routine. In this determination, if it is determined in the interrupt processing routine that the value of the accompaniment counter T has not been incremented, the process is terminated. The phrase data designated by the value of the counter t is read out and an automatic performance instruction is given. That is, step SD1
The processing of 8 is performed every time the value of the accompaniment counter T is incremented in the interrupt processing routine.

Here, the pad processing is divided into cases as follows. (B) Reproduction of phrase when pad is pressed at timing timing TA shown in FIG. 4 When the pad is pressed during automatic performance, if the value of the pad flag PF is not "1" at this time, this value is set. After setting to "1", it is determined whether or not the value of the accompaniment counter T is "24" or more. If it is "24" or less, the value of the accompaniment counter T is set to the phrase counter t. . Then, the phrase counter t is activated and the phrase data designated by the value of the phrase counter t is read. As a result, reproduction of the phrase when the pad is pressed at the timing TA shown in FIG. 4 is started. This reproduction is performed every time the value of the accompaniment counter T is incremented in the interrupt processing routine until the value of the phrase counter t reaches the final value.

(B) Timing shown in FIG. 4 Timing T
Reproduction of a phrase when the pad is pressed in B When the pad is pressed during automatic performance, if the value of the pad flag PF is not "1" at that time, it is set to "1", and then in step SD12. Step SD2, step SD20, step SD until the start of the next beat is reached, that is, the value of the accompaniment counter becomes “0”
The process of the route shown in 10, step SD22, and step SD2 is repeated. When the value of the accompaniment counter T becomes "0", the value of the phrase counter t is set to "0" and the phrase data designated by the value is read. As a result, reproduction of the phrase when the pad is pressed at the timing TB shown in FIG. 4 is started.

(E) Interrupt Processing Routine The interrupt processing routine is performed at predetermined time intervals while the above processing routines are being performed. First,
In step SE2, it is determined whether or not the value of the automatic accompaniment flag AF is "1", that is, whether or not the automatic accompaniment is being performed. In this determination, if the automatic accompaniment is not in progress, the process directly ends. On the other hand, if it is determined that the automatic accompaniment is being performed, the process proceeds to step SE4, and the value of the accompaniment counter T is incremented by "1" in order to read the next accompaniment data.
Next, at step SE6, the value of the accompaniment counter T is "4.
It is determined whether it is 7 "or more. In this determination, when it is determined that the value of the accompaniment counter T is "47" or less, the process proceeds to step SE10. On the other hand, if it is determined that the value of the accompaniment counter T is “47” or more, the process proceeds to step SE8, where the value of the accompaniment counter T is set to “0” and the value of the accompaniment beat counter C is set to “1”. "increase. That is, when the value of the accompaniment counter T becomes "47" or more, the value of the accompaniment counter T is set to "0" and the value of the accompaniment beat counter C is set to "1" in order to read the accompaniment data of the next beat. "increase. After doing this process,
Go to step SE10.

In step SE10, it is determined whether or not the value of the phrase counter flag tF is "1". That is, it is determined whether or not the phrase counter t is counting. If it is determined in this determination that the phrase counter t is not counting, the process directly ends. On the other hand, if it is determined that the phrase counter t is counting, the process proceeds to step SE12 and the value of the phrase counter t is incremented by "1". Next, at step SE14, the value of the phrase counter t becomes "EN.
D ", that is, it is determined whether or not it is the last value. If it is determined in this determination that the value of the phrase counter t is not the final value, the process is terminated. On the other hand, if the value of the phrase counter t is the last value, the process proceeds to step SE16, where the value of the phrase counter flag tF is set to "0" and the value of the pad flag PF is set to "0".
Set to.

As described above, according to this embodiment, when the pad is pressed during the automatic accompaniment performance, if the timing at that time is before "24" of the value of the accompaniment counter T, the beat starts from the beginning. The phrase data corresponding to the period until the pad is pressed is not reproduced, and the subsequent phrase data is reproduced in synchronization with the timing at which the pad is pressed. On the other hand, if the timing at which the pad is pressed is after the value "24" of the accompaniment counter T, the reproduction of the phrase data is started in synchronization with the beginning of the beat next to the automatic accompaniment. In this case, it goes without saying that the music data is reproduced from the beginning. Therefore, when operating the pad in time with the automatic accompaniment, for example, the phrase and the automatic accompaniment can be synchronized with the beat, and the phrase can be started to play at an optimal timing, which enables an effective performance. become.

In the above embodiment, the accompaniment counter T.
Although a part of the phrase data is deleted and the rest is played back or the phrase data is played back from the beginning of the next beat based on the value "24" of, the value is not limited to "24". It is optional. Further, this reference value may be set arbitrarily. Further, in the above embodiment, the phrase is generated by pressing the pad, but a drum sound or the like may be generated. Also,
Although the above-mentioned embodiment is an example applied to an electronic musical instrument, it may be applied to computer music by music software in addition to this.

[0031]

According to the present invention, when an operator is operated during automatic accompaniment, if the timing at that time is before the reference timing in one beat of automatic accompaniment, the operator is operated from the beginning of that beat. The music data corresponding to the period up to when it is operated is not played back, but the subsequent music data playback is started in synchronization with the timing at which the operator is operated, while the timing when the operator is operated If is after the reference timing in one beat of the automatic accompaniment, the music data is started to be reproduced in synchronization with the beginning of the next beat of the automatic accompaniment.
When operating the controls along with the automatic accompaniment, for example, the phrase and the automatic accompaniment can be synchronized with the beat, and the phrase can be started to play back at an optimal timing, which enables an effective performance. Become.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an electronic musical instrument including a musical sound generating device according to an embodiment of the present invention.

FIG. 2 is a memory map for explaining a data storage pattern in the same embodiment.

FIG. 3 is a memory map for explaining a data storage pattern in the same embodiment.

FIG. 4 is a timing chart explaining a reproduction timing of phrase data in the embodiment.

FIG. 5 is a flow chart for explaining the operation of the main routine in the embodiment.

FIG. 6 is a flowchart for explaining the operation of a switch processing routine in the embodiment.

FIG. 7 is a flowchart for explaining the operation of an automatic accompaniment processing routine in the embodiment.

FIG. 8 is a flowchart for explaining an operation of a pad processing routine in the embodiment.

FIG. 9 is a flowchart for explaining the operation of an interrupt processing routine in the same embodiment.

FIG. 10 is a timing chart for explaining reproduction timing of phrase data in an electronic musical instrument equipped with a conventional musical tone generating device.

[Explanation of symbols]

1 keyboard 2 console panel 3 CPU (accompaniment sounding means, reproducing means, operation timing detecting means, judging means, reproduction instructing means) 4 ROM 5 RAM 6 sound source (accompaniment sounding means, reproducing means) 7 waveform memory 8 automatic accompaniment data memory 9 Pad data memory 10 D / A converter 11 Amplifier 20 Pad (operator)

Claims (3)

[Claims] 1. An accompaniment generating means for generating an accompaniment by accompaniment data, a plurality of operators, a storage means for storing a plurality of music data, and a corresponding one of the plurality of operators operated. Reproduction means for reading out music data from the storage means and reproduction, operation timing detection means for detecting operation timing of the plurality of operators during accompaniment generation by the accompaniment generation means, and operation detected by the operation timing detection means Determination means for determining whether or not the timing is before the reference timing in the accompaniment beat; and when the operation timing is determined by the determination means as before the reference timing, from the beginning of the accompaniment beat The music data corresponding to the period up to the operation timing is not reproduced, and the subsequent music data is synchronized with the operation timing. And a reproduction instructing means for instructing to start reproduction of the data. 2. The reproduction instructing means further reproduces from the beginning of the music data in synchronization with the beginning of the beat next to the accompaniment when it is determined that the operation timing is after the reference timing. The musical tone generating apparatus according to claim 1, wherein the musical tone generating apparatus is instructed to start. 3. The musical sound generating device according to claim 1, which is applied to an electronic musical instrument.