JP2001209382A - Beat processing device of electronic instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove aural unnaturalness of produced musical sound when beating musical sound is produced by plural musical sound producing means. SOLUTION: This beat processing device is provided with a beat detection means for judging whether or not musical sound instructed to be newly produced is beat, a level detection means for detecting a level of musical sound that is in the beating relation with the musical sound instructed to be newly produced and is being produced when the musical sound instructed to be newly produced is instructed to be produced, in the case that the musical sound instructed to be newly produced is judged as beat, and a control means for controlling to change into a rapid attenuation rate an envelope for producing musical sound of the musical sound other than the maximum level of the musical sound detected by the above level detection means as well as the musical sound produced immediately before the above musical sound instructed to be newly produced, among the musical sound in the beating relation with the above musical sound instructed to be newly produced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous hit processing apparatus for an electronic musical instrument, and more particularly, to an operation of a performance operator having a predetermined pitch among a plurality of performance operators for designating a pitch. Before the generated tone signal has not completely attenuated, the same performance operator as that of the operated predetermined pitch is operated again, and the performance operator of the same pitch is continuously operated. The present invention relates to a continuous hit processing device for an electronic musical instrument which is suitable for use in a continuous hit performance.

[0002]

2. Description of the Related Art Generally, many electronic musical instruments have a plurality of tone generation channels as a plurality of tone generation means for generating a tone. Then, in response to a tone generation instruction (sound generation instruction) such as a key press operation on a keyboard having a plurality of keys as a plurality of performance operators for designating a pitch, any one of the plurality of tone generation channels is selected. A generation channel is selected, and a waveform signal based on a tone generation instruction and an envelope for generating a tone (hereinafter referred to as a “waveform envelope”) are given to the selected tone generation channel to generate a tone signal. A process for generating a desired musical tone based on the generation instruction is performed.

At this time, if the damper pedal is depressed, the damping state is maintained, and the waveform envelope is not rapidly attenuated, and the generated musical sound is attenuated. The time becomes longer and the music continues.

In the above-described electronic musical instrument, when a continuous performance is performed, that is, before a musical tone signal generated based on a key depression operation of a key having a predetermined pitch on a keyboard is completely attenuated, the musical tone signal is not fully attenuated. When the same key as the operated key having the predetermined pitch is operated again and the key having the same pitch is continuously pressed, the key generation operation is performed based on the musical tone generation instruction (sound generation instruction) of the key depression operation. A multi-assign method is known in which all the waveform data and the waveform envelope are faithfully applied to a tone generation channel.

However, in the multi-assign system, since the waveform data and the waveform envelope based on the tone generation instruction (sound generation instruction) are all faithfully applied to the tone generation channel, the damper state is maintained as described above. When this happens, a large number of pronunciations are required, and many musical tone generation channels are generating musical tones.
There is a problem that a large load is applied to the (central processing unit) and the sound source.

In order to solve such a problem, the maximum number of pronunciations is limited, and if all the tone generation channels are generating a tone, one of the tone generation channels is selected, and the selected tone generation channel is selected. A limited multi-assign electronic musical instrument in which the generation of a tone being generated in a channel is stopped (truncated), and waveform data and a waveform envelope are assigned to the truncated tone generation channel to generate a new tone. Has been proposed.

In such an electronic musical instrument, in order to generate a new musical tone, a process of selecting which musical tone generating channel is to be selected as a musical tone generating channel to be truncated from the musical tone generating channels for which a musical tone is being generated. As a method, for example, history assignment is used.

Here, the history assignment manages the history of the waveform data and the waveform envelope assigned to each tone generation channel, and is limited to the latest tone generation instruction (sound generation instruction) within the maximum number of sounds. As described above, a tone generation channel to which waveform data and a waveform envelope based on a tone generation instruction (sound generation instruction) other than the latest tone generation instruction (sound generation instruction) are assigned is used as a tone generation channel for truncating the history from the oldest. How to choose.

However, in the above-described history assignment, since the tone generation channel to be truncated is selected by history management, the tone which is originally spatially strongly pressed and depressed is muted without being maintained. There was a problem that it sounded unnaturally.

Here, regarding the above-mentioned problem, FIG.
This will be described in more detail with reference to (a) and (b).

FIG. 1A shows eight musical tones (tone M1 and tone M1) produced by continuous playing when the damper state is maintained.
2, tone M3, tone M4, tone M5, tone M6, tone M
7, musical tones M8) are shown in chronological order, and the first musical tone M1 and the fifth musical tone M5 with the oldest histories are musical tones generated by strongly depressing a key, and the musical tones M1 and M5 are generated. Other than M2, M3, M4, M
6. The musical sounds M7 and M8 are all musical sounds generated by a weak key depression operation.

On the other hand, FIG. 1 (b) shows eight musical tones (musical tone M1) produced by the continuous tapping performance when the damper state is maintained.
1, tone M12, tone M13, tone M14, tone M1
5, musical tone M16, musical tone M17, musical tone M18) are shown in chronological order, and the first musical tone M1 having the oldest history is shown.
1 and the eighth musical tone M18 having the newest history are musical tones generated by strongly depressing the key, and the musical tone M11, the musical tone M12 other than the musical tone M18, the musical tone M13, the musical tone M14,
The tone M15, the tone M16 and the tone M17 are all tone generated by weakly depressing the key and sequentially depressing the key strongly in chronological order.

The first tone generation channel (hereinafter, "tone generation channel" is referred to as "Voice (Voic)
e), and the “first tone generation channel” is referred to as “voice 1”. ), A second tone generation channel (hereinafter referred to as "voice 2") and a third tone generation channel (hereinafter referred to as "voice 3"), and the maximum number of sounds is set to "3". In electronic musical instruments,
One musical sound generation instruction (hereinafter referred to as “Note On (Note
on) ". With regard to ()), the one note-on is assigned to one voice, and a musical tone is generated using the one voice.

At this time, the damper state is maintained and FIG.
At the time t1, note-on 1 is assigned to the voice 1 to generate a musical tone M1 at the time t1, and at time t2, the note-on 2 is assigned to the voice 2 to generate the musical tone M2. Is generated, and note-on 3 is assigned to voice 3 at time t3 to generate musical tone M3.

In this state, when a tone M4 is generated by a new note-on 4 at time t4,
The same note for Limited Multi Assign
Since there is a sounding restriction on the number, the voice 1 to which the note-on 1 corresponding to the musical tone M1 with the oldest history is assigned is selected as the musical tone generation channel to be truncated.

As a result, the voice 1 which generates the musical tone M1 by the strong key pressing operation has the highest tone signal level, and the voice 1 generates the loudest musical tone in the sense of hearing. The rapid decay process of the assigned waveform envelope is started, and the tone M1 is muted.

Also, when the continuous performance shown in FIG. 1B is performed, a new note-on 14 at time t4 is performed in the same manner as the continuous performance shown in FIG. 1A.
To generate the musical tone M14, the voice 1 to which the note-on 11 corresponding to the musical tone M11 having the oldest history is allocated is selected as the musical tone generating channel to be truncated. The rapid decay process of the waveform envelope is started, and the tone M11 that is generating the loudest sound by a strong key operation.
Will be muted.

Therefore, in the conventional limited multi-assignment, a rapid decay process is not performed on the waveform envelope assigned to the voice 2 or the voice 3 that emits a small musical tone in the sense of hearing that is preferably truncated. There is a problem that a rapid decay process is started for the waveform envelope assigned to the voice 1 which is generating a loud musical tone in terms of hearing, and the musical tone of the voice 1 is muted.

[0019]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned various problems of the prior art. At the time of generation by the generating means, a small musical tone is generated on the auditory sense without performing a rapid decay process on the musical tone generating envelope assigned to the musical sound generating means generating the loud musical tone on the auditory sense. A continuous tapping process for an electronic musical instrument in which a rapid decay process for a tone generating envelope assigned to a tone generating unit is started, so that an unnaturalness of a tone generated by a repeated tapping performance can be removed. It is intended to provide a device.

[0020]

In order to achieve the above object, according to the first aspect of the present invention, a continuous hit detecting means for determining whether or not a musical tone newly instructed to be generated is a continuous hit. And when the musical tone newly instructed to be generated is determined to be a continuous hit by the continuous hit detecting means, the musical tone in a continuous hit relationship with the newly generated and instructed musical tone and the newly instructed musical tone is generated. A level detecting means for detecting the level of the tone being generated when instructed; and, among the tones which have a continuous tapping relationship with the newly generated tone, the tone is generated immediately before the newly generated tone. Control means for changing and controlling the musical tone and the envelope for generating the musical tone other than the musical tone having the maximum level detected by the level detecting means to a rapid decay rate.

Therefore, according to the first aspect of the present invention, among the musical tones which have a continuous tapping relationship with the musical tone which is newly instructed, the musical tone is generated immediately before the musical tone which is newly instructed. The envelope for generating a tone other than the tone having the maximum level detected by the level detecting means and the tone detected by the level detecting means is controlled to be changed to a rapid decay rate. In the sense of hearing, a small musical tone is muted as soon as possible, and the unnaturalness of the musical tone generated by the continuous playing can be removed.

According to the present invention, as in the second aspect of the present invention, the control means may be arranged such that the attenuation rate of the musical tone generating envelope is a predetermined attenuation rate. At one time, control is performed to change the predetermined attenuation rate of the musical sound generation envelope to a first attenuation rate that is faster than the predetermined attenuation rate, and the attenuation rate of the musical sound generation envelope is reduced to the first attenuation rate. When the decay rate is equal to, the control for changing the first decay rate to the second decay rate which is faster than the first decay rate can be performed.

[0023]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a continuous hit processing apparatus for an electronic musical instrument according to the present invention.

FIG. 2 is a block diagram showing an electronic musical instrument provided with a continuous hit processing device for an electronic musical instrument according to an embodiment of the present invention.

This electronic musical instrument is configured to control its entire operation using a central processing unit (CPU) 10.

The CPU 10 has a read-only memory (ROM) 14 via the bus 12 for storing programs executed by the CPU 10 for controlling the overall operation, and the like. Random access memory (RAM) 16 as a working area in which various buffers and registers necessary for the music are set, and a tone generation instruction (note on (note on ( Note o
n)) / Keyboard 1 for performing musical tone generation stop instruction (silence instruction: note off)
8, a group of operators 20 for performing various operations, a damper pedal 22 for inhibiting the dump processing for accelerating the attenuation of the tone signal by a depressing operation, and a display 24 for displaying an operation state of the group of operators 20 and the like. And a MIDI circuit 26 for communicating a MIDI signal with an external MIDI device
And an external interface (external I / F) 28 such as a USB for performing communication of a predetermined signal with an external communication device such as a personal computer, and a key depressing operation of the keyboard 18 based on control of the CPU 10. A tone generator 30 having a plurality of tone generation channels (voices) for generating tone signals in response to a tone generation instruction / tone generation stop instruction by a key release operation is connected.

Here, the sound source 30 is provided with waveform data corresponding to a key depression of the keyboard 18 and an envelope for generating a musical tone (waveform envelope), and generates a musical tone signal based on the waveform data and the waveform envelope. For example, 24 voices for 24 channels are set.

Further, a digital signal processor (DSP) 32 for digitally processing a tone signal generated by the sound source 30 is connected to the sound source 30,
The DSP 32 has a digital / analog converter (D / A) for converting a tone signal (digital tone signal) digitally processed by the DSP 32 into an analog tone signal.
The D / A 34 is connected to an amplifier 36 for amplifying an analog tone signal. The amplifier 36 is for outputting the analog tone signal amplified by the amplifier 36 to a space as a tone. Speaker 38 is connected.

That is, in this electronic musical instrument, the sound source 30
Are output from the DSP 32, D / A 34,
Through the amplifier 36 and the speaker 38, the sound is emitted into the space as a musical sound, and the level of the musical sound being emitted and sounding in the space, that is, the magnitude of the audible sound, is determined by the waveform data and the waveform envelope. Is determined by the level of the tone signal which is the result of multiplying by.

A note output by a key pressing operation
On indicates note-on 1, note-on 2, note-on 3,... Note-on i (“i”) in time series.
Is a positive integer. ), And note-on 1,
Note On 2, Note On 3,... Note Off 1 by key release operation corresponding to each of Note On i,
Note-on 2, note-on 3, ... note-off j ("j" is a positive integer) are output.

Note that note-on 1, note-on 2,
The history of each note-on 3,... Is the same as the value of “i”, and the smaller the value of “i”, the older the history of note-on i.

Various register groups are set in the RAM 16, and the following registers are related to the embodiment of the present invention. In the following description, the contents (data and the like) of each register are represented by the same label name unless otherwise specified.

(1) Register N This register is a register in which the note-on note number of the history stored in the register H is stored.

(2) Register ML This register stores the maximum level of the waveform envelope at the same note number, and has an initial value set to "-1".

(3) Register MH This register stores the maximum level note-on history of the waveform envelope at the same note number stored in the register ML.
The initial value is set to “NULL”.

(4) Register CH This register stores the latest history of the same note number. The initial value is "NUL".
L ”.

The operation of the electronic musical instrument having the above configuration will be described with reference to FIG. 3 and the flowcharts of FIGS.

FIG. 3 is a waveform diagram showing an example of a waveform envelope, FIG. 4 is a flowchart showing a processing routine started by note-on, and FIG. FIG. 6 is a flowchart showing a routine for detecting the level of a musical tone being sounded.
The flowchart which shows the control processing routine of an envelope is shown.

The outline of the operation of this electronic musical instrument will now be described with reference to the waveform envelope shown in FIG. 3. In this electronic musical instrument, note-ons having the same note number n are continuously output. When a new note-on i is output in this case, the note-on i-1 preceding the new note-on i and the note-on of the tone with the highest level among the tones being sounded are output. Keeps the damper state, and the note-on i-1 before one of these new note-ons i and the notes other than the note-on of the tone with the highest level among the notes being sounded.
When it is turned on, a first-stage rapid decay process of the waveform envelope to be described later or a second-stage rapid decay process of the waveform envelope to be described later is started.

For example, note-on 1 at time t1
Is output, a note-on 2 is output at time t2, and a new note-on 3 is output at time t3, the note-on immediately before note-on 3 is a note-on. ON2, and furthermore, the level L2 of the waveform envelope of the note-on2 at time t3
Is larger than the level L1 of the waveform envelope of note-on 1 at time t3, so that note-on 2 has the highest level of the note being played.
It is also on.

Therefore, the note-on 2 retains the damper state, and the musical tone generated based on the note-on 2 is maintained, while the note-on immediately before the new note-on 3 is also held. For the note-on 1 which is not the note-on of the tone of the highest level among the tones being sounded, the first-stage waveform envelope rapid decay process is started (see the broken line from level L1 in FIG. 3). The tone generated based on note-on 1 will be muted.

A more detailed description will be given of the first-stage waveform envelope rapid decay process and the second-stage waveform envelope rapid decay process. A new note-on 4 is output at time t4. Is the note-on immediately before the new note-on 4 and is the maximum level among the tones being sounded (see level L3 'in FIG. 3).
The note-on 3, which is the note-on of the musical tone, keeps the damper state.

On the other hand, since the damper state of the note-on 2 is held for the note-on 2, the waveform at the first stage for releasing the holding of the damper state of the note-on 2 at time t4. The rapid decay process of the envelope is started, and the waveform envelope of note-on 2 is rapidly decayed (see the broken line from level L2 'in FIG. 3).

For note-on 1, the note-on
Since the holding of the damper state of ON 1 has already been released at time t3 (see the broken line from level L1 in FIG. 3).
At time t4, a second stage of rapid decay processing of the waveform envelope for changing the decay rate of the waveform envelope of note-on 1 more rapidly is started, and note-on 1 is started.
Rapidly attenuates (the level L1 'in FIG. 3).
Dash-dotted line from).

At time t5, a new note
Similarly, note-on 3 (see level L3 ″ in FIG. 3) and note-on 4
And the note-on 2
A rapid decay process of the waveform envelope in the second stage, in which the decay rate of the waveform envelope of the note-on 2 is changed more rapidly, is started, and the waveform envelope of the note-on 2 is rapidly decayed (see the dashed line from the level L2 ″ in FIG. 3). .

The processing routine started by note-on in FIG. 4 will be described. The processing routine started by note-on is an interrupt routine started when note-on from keyboard 18 is output to CPU 10. In the processing routine started by this note-on, the processing for detecting the level of the tone being generated and the processing for controlling the envelope are performed.

That is, the note number n
Is output to the CPU 10,
The processing routine started by the note-on is started. First, in the process of step S402, it is determined whether or not the damper state is held by the depressing operation of the damper pedal 22, and the damper state is not held. If it is determined that the damper state is held, the processing routine started by this note-on is terminated.
Proceed to the process of 404.

That is, if the damper pedal 22 is not depressed and the damper state is not maintained, the processing routine started by this note-on is terminated and the output note-on i is output. A tone that does not hold the damper state is generated by the sound generation process based on the tone.

It should be noted that a known technique can be used for the sound generation processing, and a detailed description thereof will be omitted.

On the other hand, in the processing of step S404, the note-on i-1 immediately before the output note-on i, that is, the latest history is stored in the register H, and the latest history stored in the register H is stored. History (Note on i-
The note number of 1) is stored in the register N.

When the process of step S404 is completed, the process proceeds to the process of step S406, where the note number n of the newly output note-on i and the note-on of the history stored in the register N in the process of step S404. It is determined whether or not the note numbers are equal.

As a result of the judgment processing in step S406,
Note number n of newly output note-on i
When it is determined that the note-on note number of the history stored in the register N is equal to the note-on note number in the processing of step S404, the process proceeds to step S408, while the newly output note-on i is output. Notebook
When it is determined that the number n is different from the note-on note number of the history stored in the register N in the process of step S404, the process proceeds to step S410.

In the processing of step S408, as a subroutine of this processing routine, processing for detecting the level of the musical tone being generated (see FIG. 5) is performed, and when the processing of step S408 ends, the processing of step S410 is performed. Proceed to. Note that the process of detecting the level of the musical tone being sounded will be described later with reference to the flowchart shown in FIG.

In the process of step S410, it is determined whether or not the history of the difference obtained by subtracting 1 from the value of the register H is not NULL, that is, the note number of the history which is one older than the history stored in the register H is It is determined whether or not the note is being pronounced, and if the history obtained by subtracting 1 from the value of the register H is not NULL, the note number of the history one older than the history stored in the register H is Since the sound is being generated, the process proceeds to step S412. On the other hand, if the history of the difference obtained by subtracting 1 from the value of the register H is NULL, the note / history of the history that is one older than the history stored in the register H Since the number is not sounding, step S
The process proceeds to step 416.

In the process of step S412, a difference obtained by subtracting 1 from the value of the register H is stored in the register H, and the flow advances to the process of step S414.

In the processing of step S414, the note-on note number of the history stored in the register H in the processing of step S412 is stored in the register N, and the flow returns to the processing of step S406.

Therefore, the newly output note-on i
If there is a tone that is sounding for the same note number as the note number n of step S406 → step S408 → step S410 → step S412
→ The process of step S414 is performed.

On the other hand, in the process of step S416, the envelope control process (see FIG. 6) is performed.
The processing routine started by turning on is ended, and a tone with the damper state held is generated by sound generation processing based on the output note-on i.

It should be noted that a known technique can be used for the sound generation processing, and a detailed description thereof will be omitted.

FIG. 5 shows a flowchart of a routine for detecting the level of a musical tone being sounded. As described above, the routine for detecting the level of a musical tone during sounding is as follows.
This is a subroutine executed in step S408 of the processing routine started by the above-mentioned note-on.

In the routine for detecting the level of the currently sounding musical tone, the level of the currently sounding musical tone having the same note number as the newly output note-on i is output. To detect the maximum level (the level stored in the register ML) and the note-on of the maximum level (the note-on of the history stored in the register MH).

When the routine for detecting the level of a musical tone being sounded is started, first, in the process of step S502, it is determined whether or not the register CH has an initial value of "NULL". "NULL" of value
If it is, the process proceeds to step S504, and if the register CH is not the initial value “NULL”, the process proceeds to step S506.

In the process of step S504, the history stored in the register H is stored in the register CH. When the processing in step S504 is completed, step S506 is performed.
Processing proceeds to

In the process of step S506, a comparison is made between the note-on level of the history stored in the register H and the maximum level of the same note number stored in the register ML. If it is determined that the maximum level of the same note number stored in the register ML is smaller than the level of the stored note number in the history, the process proceeds to step S508, and the stored value is stored in the register H. If it is determined that the maximum level of the same note number stored in the register ML is higher than the level of the note number of the history record, the level detection processing routine of the tone being generated is terminated. Then, the process returns to the processing routine started by note-on.

In the process of step S508, the level of the note number of the history stored in the register H is stored in the register ML, and the maximum level of note-on of the same note number stored in the register ML is stored. Is stored in the register ML.

When the processing in step S508 is completed, the routine for detecting the level of the tone being generated is terminated.
It returns to the processing routine started by note-on.

FIG. 6 shows a flowchart of an envelope control processing routine. As described above, this envelope control processing routine is a subroutine executed in step S416 of the processing routine started by the above-mentioned note-on.

In the envelope control processing routine, the note-on having the same note number as the note-number n of the newly output note-on i and the note-on newly output are For the note-on which is not the latest history note-on i-1 and which is not the maximum level note-on in the tone being generated, the damper state of the note-on is maintained. The first-stage waveform envelope rapid decay process to be canceled and the second-stage waveform envelope rapid decay process to more rapidly change the note-on waveform envelope decay rate are performed.

When this envelope control processing routine is started, first, in the processing of step S602,
The difference between the value of the register CH minus one, that is, the register C
A history one older than the latest history stored in H is stored in the register H, and the note-on note number of the history stored in the register H is stored in the register N.

When step S602 is completed, the process proceeds to step S604, in which the note number n of the newly output note-on i is different from the note number of the history stored in the register N in the process of step S602. If it is determined that the note number n of the newly output note-on i is different from the note number of the history stored in the register N in the process of step S602, the process proceeds to step S602. The process proceeds to S606. On the other hand, when it is determined that the newly output note number i of the note-on i is equal to the note number of the history stored in the register N in the process of step S602, The process proceeds to step S610.

In the processing of step S606, it is determined whether or not the history of the difference obtained by subtracting 1 from the value of the register H is NULL, that is, the note number of the history one older than the history stored in the register H is changed. It is determined whether the sound is being generated or not, and the history of the difference obtained by subtracting 1 from the value of the register H is NU.
If it is not LL, the note number of the history that is one older than the history stored in the register H is being sounded.
The process proceeds to step S608.
If the history of the difference obtained by subtracting 1 from the value of is NULL, the note number of the history that is one older than the history stored in the register H is not being sounded, so that this envelope control processing routine is executed. And returns to the processing routine started by note-on.

In the process of step S608, the difference obtained by subtracting 1 from the value of the register H is stored in the register H, and the note-on note number of the history stored in the register H is stored in the register N. Then, the process returns to step S604 to repeat the process.

On the other hand, in the process of step S610, the history stored in the register H and the same note stored in the register MH in the process of step S508 are stored.
It is determined whether or not the history of the maximum level note-on in the number is equal, and the history stored in the register H and the maximum level note in the same note number stored in the register MH in the processing of step S508 are determined.・ If it is determined that the on history is equal,
Proceeding to the process of step S606, when it is determined that the history stored in the register H and the maximum level note-on history of the same note number stored in the register MH in the process of step S508 are different. Proceeds to the process of step S612.

Therefore, step S610 → step S6
When the processing proceeds to 12, the history stored in the register H is a note-on having the same note number as the note-number n of the newly output note-on i and a new output. The recorded note-on i is not the note-on i-1 of the latest history, and is the note-on history that is not the note-on of the maximum level among the tones being sounded.

Upon completion of the process in step S610, the flow advances to the process in step S612 to determine whether or not the note-on of the history stored in the register H is held in the damper state, and is stored in the register H. If it is determined that the history note-on is in the damper state, the process proceeds to step S614. On the other hand, the history note-on stored in the register H is not in the damper state. If determined to be, the process of step S616 is performed.

In the process of step S614, a process of releasing the holding of the note-on damper state of the history stored in the register H is performed. Therefore, for the note-on of the history stored in the register H, the first-stage waveform envelope rapid decay process for releasing the holding of the note-on damper state is started.

On the other hand, in the processing of step S616, the note-on velocity (key pressing speed data) of the history stored in the register H and the newly output note-on velocity are stored.
A comparison is made with the velocity of the on-i (key-depression velocity data), and the newly output note-on i is compared with the note-on velocity (key-depression velocity data) of the history stored in the register H. Velocity (key pressing speed data)
Is smaller, the process returns to step S606, and the velocity of the newly output note-on i (key depression) is compared with the note-on velocity (key depression velocity data) of the history stored in the register H. If the speed data is large, the process proceeds to step S618.

In the process of step S618, the process of changing the attenuation rate of the note-on waveform envelope of the history stored in the register H more rapidly, more specifically, the waveform envelope is completely attenuated (waveform envelope level). Is reduced to ０) (off-envelope time), and the process returns to step S606 when the process in step S618 ends.

Therefore, in the processing of step S618, for the note-on of the history stored in the register H, the waveform envelope of the second stage for changing the attenuation rate of the note-on waveform envelope more rapidly is changed. The rapid decay process is started.

As described above, in the continuous hit processing apparatus for an electronic musical instrument according to the present invention, a new note-on i is output when a note-on of the same note number n is continuously output. And (a) the damper state of the note-on i-1 before one of the new note-on i is maintained, and (b) the note-on of the tone of the maximum level among the tones being sounded. (C) The note-on i-1 immediately before the newly output note-on i and the note-on other than the note-on at the highest level among the tones being sounded. (D) when the note-on damper state is held, the first stage of rapid decay of the waveform envelope for canceling the note-on damper state is started; Without being held damper state of the note-on, and the note-on velocity (depressing velocity data) note-on i which is newly output
When the velocity is lower than the velocity of the key-on (key pressing speed data), the second stage of rapid decay processing of the waveform envelope for changing the decay rate of the note-on waveform envelope is started more quickly. , The loud musical tone is preferentially maintained, and the small musical tone is muted as soon as possible in the sense of hearing, so that the unnaturalness of the musical tone generated by the continuous playing can be removed.

Further, since synthesis in the space of the same waveform generated in different phases is avoided, it is possible to suppress the roughness of the performance sound caused by synthesis in the space of the same waveform generated in the different phases.

Further, in the continuous processing apparatus for an electronic musical instrument according to the present invention, the number of voices of the sound source 30 for which the rapid decay processing of the waveform envelope has not been started is limited to "3" at the maximum. , Can save the number of pronunciations.

[0083]

Since the present invention is constructed as described above, when a plurality of musical sound generating means generate continuous musical tones, the musical sound generating means generates a loud musical sound in terms of audibility. The rapid decay process is not performed on the tone generation envelope assigned to the tone generation envelope assigned to the tone generation unit that emits a small tone in the sense of hearing without performing the rapid decay process on the tone generation envelope assigned to the Thus, it is possible to remove the unnaturalness of the musical sound generated by the repeated hit performance.

[Brief description of the drawings]

FIG. 1A shows eight musical tones (musical sound M1, musical sound M2, and musical sound M) produced by continuous performance when the damper state is maintained.
3, tone M4, tone M5, tone M6, tone M7, tone M
FIG. 8B is an explanatory diagram showing chronological order of FIG. 8B. FIG. 8B shows eight musical tones (musical sound M11, musical sound M12, musical sound M13, and musical sound M1) produced by continuous playing when the damper state is held.
4, Tone M15, Tone M16, Tone M17, Tone M1
FIG. 8B is an explanatory diagram showing chronological order.

FIG. 2 is a block diagram of an electronic musical instrument provided with a continuous hit processing device for an electronic musical instrument according to an example of an embodiment of the present invention.

FIG. 3 is a waveform chart showing an example of a waveform envelope.

FIG. 4 is a flowchart showing a processing routine started by note-on.

FIG. 5 is a flowchart showing a routine for detecting the level of a musical tone being sounded;

FIG. 6 is a flowchart showing an envelope control processing routine.

[Explanation of symbols]

Reference Signs List 10 Central processing unit (CPU) 12 Bus 14 Read only memory (ROM) 16 Random access memory (RAM) 18 Keyboard 20 Operator group 22 Damper pedal 24 Display 26 MIDI circuit 28 External interface (External I / O) F) 30 sound source 32 digital signal processor (DS)
P) 34 Digital / analog converter (D / A) 36 Amplifier 38 Speaker

Claims (2)

[Claims] 1. A continuous hit detecting means for judging whether or not a musical tone newly instructed to be generated is a continuous hit, and when the musical tone newly instructed to be generated is determined to be a continuous hit by the continuous hit detecting means. Level detecting means for detecting the level of the tone being sounded when the newly generated musical tone is instructed to generate a continuous hit with the newly generated musical tone; and Among the musical tones that have a continuous tapping relationship with the generated musical tones, the musical tone generated immediately before the musical tone newly instructed to be generated and the envelope for generating a musical tone other than the musical tone whose level detected by the level detecting means is the maximum are generated. A continuous hit processing device for an electronic musical instrument having control means for changing and controlling a rapid decay rate. 2. The continuous hit processing device for an electronic musical instrument according to claim 1, wherein said control means is configured to control a predetermined envelope of the musical sound generation when the attenuation rate of the musical sound generation envelope is a predetermined attenuation rate. Is controlled to change the decay rate to a first decay rate that is faster than the predetermined decay rate, and the decay rate of the musical sound generation envelope is set to the first decay rate.
A continuous hit processing device for an electronic musical instrument, which performs control to change the first decay rate to a second decay rate that is faster than the first decay rate when the decay rate is equal to the first decay rate.