JPH10116079A - Electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically conduct the process which changes the envelope related to the characteristics of the musical sounds that are set in a sound source while controlling the characteristics of the musical sounds generated by the sound source by the sound volume envelopes of external sound signals. SOLUTION: When a first mode is selected by an operator section 20, the parameters, which set a flat envelope from points P1 to P4, are read from a setting storage section 22 by a setting changing section 24 and the parameters are set into a sound source 26. Then, the flat envelope from the points P1 to P4 set in the source 26 and the sound volume envelope of the external sound signals detected by an envelope detecting section 12 are superimposed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an electronic musical instrument,
More specifically, the present invention relates to an electronic musical instrument that sends musical performance information such as pitch information, pronunciation start instruction information / tone generation stop instruction information, and timbre information to a musical sound generating means, and controls generation of musical sounds by the musical sound generating means. The present invention relates to an electronic musical instrument that controls a musical sound generating means so that a musical tone having a natural playing feeling can be generated when a change in volume due to performance is used for controlling the musical sound generating means as needed.

[0002]

2. Description of the Related Art Conventionally, various electronic musical instruments have been provided on the market. Among them, for example, an electronic musical instrument called a guitar synthesizer is known.

An electronic musical instrument called a guitar synthesizer has a pitch (pitch) of a string vibration of an input guitar.
By controlling the sound source as a musical tone generating means based on the detected input pitch and the input volume, the tone generation is started at the pitch and the volume corresponding to the input pitch and the input volume. It has been made like that.

[0004] In a guitar synthesizer, tone generation starts at a volume corresponding to the input volume. The sound source includes information on a volume change during the tone generation after the tone generation starts according to the input volume. The sound source changes the volume of the musical tone being generated in accordance with the information on the volume change set in advance for such a sound source. In other words, the volume change of the musical tone during sound generation is determined depending on the input volume at the start of sound generation, but the time change of the input volume is not directly reflected on the volume change of the musical sound being generated.

Therefore, in the above-described conventional volume control method, since information relating to a volume change indicating a complicated volume change can be set in advance in a sound source, a free volume change independent of the input volume can be realized. was there.

However, in the case where a musical tone such as a guitar tone is generated in a sound source by the conventional guitar synthesizer as described above, for example, a change in input volume due to a string vibration of the input guitar is generated. It has been known that changing the volume of the middle tone can provide a natural playing feeling corresponding to the tone of a guitar. However, the conventional volume control method as described above has a problem that such a natural feeling of performance cannot be obtained.

Further, in the above-described conventional volume control method, the input volume due to the performance of the player is reflected only at the start of tone generation, and the time change of the input volume is reflected in the tone being generated. There is also a problem that the player may feel a sense of incongruity between the performance feeling of his own performance and the change in the volume of the musical tone being actually sounded.

Therefore, as a method for solving the problems of the conventional volume control method as described above, a volume control method called "envelope follow" has been proposed.

This envelope follow reflects the change in the input sound volume with the passage of time in the sound source at any time after the tone generation of the sound source is started, and responds to the change in the input sound volume with the passage of time. Since the musical tone whose volume has been changed is generated, a characteristic that a natural playing feeling can be obtained is provided.

However, when this envelope follow is applied to a PCM sound source, which is a main sound source at present, the sound source is controlled by superimposing a time change of a preset sound volume and a time change of an input sound volume of the sound source. This causes a problem that a musical tone whose volume changes very unnaturally is generated.

That is, for example, when the envelope indicating the time change of the input volume due to the string vibration of the input guitar is the envelope shown in FIG. 1, the envelope shown in FIG. Let us consider the case where a sound source is set as an envelope showing a time change. The envelope preset in the sound source shown in FIG. 2 includes the required time from the start of sound generation to the point P1, the level of the point P1, the required time from the point P1 to the point P2, the level of the point P2, and the level of the point P2 to the point It is set by the parameters of the required time to P3, the level of point P3, and the required time from point P4 to silence.

In the above case, when the envelope follow is used, the envelope shown in FIG. 1 and the envelope shown in FIG. 2 are superimposed, and the envelope of the musical tone generated by the sound source is as shown in FIG. This figure 3
According to the envelope shown in (1), immediately after the start of the tone generation, the volume drops sharply, and a tone that changes in volume very unnaturally is generated.

For this reason, when the envelope follow is used, the envelope indicating the change in the volume set in the sound source is changed to, for example, a flat one, and only the change in the input volume is generated by the tone generator. It was desired to be reflected in this.

However, in order to change the envelope indicating the volume change set for the sound source, a number of parameters as described above (the time required from the start of sound generation to the point P1, the level of the point P1, the point from the point P1 to the point Time required to P2, level of point P2,
It is necessary to change the required time from the point P2 to the point P3, the level of the point P3, and the required time from the point P4 to the mute), so that the setting change operation becomes very complicated. Was.

In the above description, the sound volume in the characteristics of the musical tone has been described. However, an appropriate combination of the characteristic tone or pitch other than the volume, the volume, the tone, the pitch, etc. When controlling by follow-up, the same problems as above were pointed out.

[0016]

SUMMARY OF THE INVENTION According to the present invention, in the case where envelope follow is used, the setting change operation for changing the envelope relating to the characteristic of the musical tone set in the musical tone generating means as the sound source is reduced. The purpose of the present invention is to enable the setting change operation to be performed automatically and to easily change the envelope related to the characteristics of the musical sounds set in the musical sound generating means. It is an object of the present invention to provide an electronic musical instrument.

[0017]

In order to achieve the above object, according to the first aspect of the present invention, there is provided an input means for inputting an external sound signal, and an external sound signal input from the input means. A volume envelope detecting means for detecting a volume envelope of the signal at any time; generating sound generation start instruction information based on the external sound signal input from the input means; generating a musical tone according to the sound generation start instruction information; The sound generation start instruction information generating means for outputting the sound generation start instruction information to the dependent musical sound generation means for controlling a predetermined characteristic by a preset envelope, and the volume envelope detected as needed by the envelope detection means, The above-mentioned predetermined characteristic of the tone generated by the dependent tone generating means in accordance with the pronunciation start instruction information is optionally added. Control means for controlling, and setting changing means for changing the setting of the envelope relating to the predetermined characteristic of the musical tone preset in the dependent musical sound generating means to a predetermined value determined in the electronic musical instrument. It was done.

According to a second aspect of the present invention, there is provided an input means for inputting an external sound signal, and a volume envelope detecting means for detecting a volume envelope of the external sound signal input from the input means as needed. Generating sounding start instruction information based on the external sound signal input from the input means, generating a musical tone according to the sounding start instruction information, and controlling a predetermined characteristic of the generated musical sound by a preset envelope. The sound generation start instruction information generating means for outputting the sound generation start instruction information to the dependent music sound generation means, and the volume envelope detected at any time by the envelope detection means. Control means for selectively controlling the predetermined characteristic of the generated musical tone at any time; In the case where the control means performs the occasional control of the predetermined characteristic of the tone generated by the dependent tone generating means by the volume envelope, the predetermined characteristic of the tone set in advance by the dependent tone generating means is provided. If the setting of the envelope is changed to a predetermined value, and the control means does not perform optional control of the predetermined characteristic of the tone generated by the dependent tone generating means by the volume envelope, A setting change unit that does not change the envelope setting relating to the predetermined characteristic of the musical tone preset in the musical tone generating unit to a predetermined value.

Here, for example, the control means may perform the occasional control of the predetermined characteristic of the tone generated by the dependent tone generating means by the volume envelope, as described in claim 3. Switching control means for arbitrarily switching between the case where the control is not performed and the case where the control is not performed at any time. The above-mentioned predetermined characteristic control may be selectively performed at any time.

The predetermined value may be, for example,
, The maximum value at a predetermined point of the envelope may be used.

Further, the predetermined characteristic may be a volume of a musical tone, a timbre, a pitch, or a combination thereof.

[0022] The setting change means may be arranged in accordance with the type of the external sound signal.
The setting of the envelope may be changed.

Further, the external tone signal may be a string vibration signal.

In the present invention, the "dependent musical tone generating means" (corresponding to the "sound source 26" in an embodiment of the invention described later) is not an essential component of the present invention, but is an electronic musical instrument. The electronic musical instrument may be integrated, or may be configured separately from the electronic musical instrument, and may be connected to the electronic musical instrument by communication according to the so-called MIDI standard.

Therefore, the "control means" in the invention according to claim 1 or 2 of the present invention not only directly controls the "dependent musical sound generation means" but also controls information such as control information. By sending it to the “dependent sound generation means”, the “dependent sound generation means” is finally transmitted.
Is also included.

Similarly, the "setting change means" in the first or second aspect of the present invention not only directly changes the setting of the "dependent musical sound generation means" but also changes the setting change information. By transmitting such a signal to the "dependent sound generation means", the envelope of the "dependent sound generation means" is finally changed.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an electronic musical instrument according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 4 is a block diagram showing an example of an embodiment of an electronic musical instrument according to the present invention. In this electronic musical instrument, for example, a string vibration of a guitar is inputted as an external sound signal, and is inputted. A pitch and a volume are detected from the external sound signal, and a sound source 26 described later can be controlled based on the detected input pitch and the input volume. More specifically, it is configured such that the volume of the sound source can be controlled according to the volume envelope of the external sound signal.

That is, the electronic musical instrument has a pitch detecting section 10 for detecting the pitch of an input external sound signal and outputting it as pitch information, and an envelope for detecting a volume envelope of the input external sound signal as needed. A detection unit 12, a sounding / stop instruction unit 14 for outputting sounding start instruction information (note-on message) and sounding stop instruction information (note-off message) according to the detection result of the envelope detection unit 12, and an envelope; An initial volume instructing unit 16 that outputs sounding initial volume instruction information (velocity) in accordance with a detection result of the detecting unit 12, and an envelope adjusting unit 18 that performs processing for adjusting the volume envelope detected by the envelope detecting unit 12 and outputs the result. And the change over time of the volume envelope of the external sound signal is reflected in the volume control of the sound source 26 as needed. An operator for selecting between the first mode and a second mode in which a change over time of the volume envelope of the external sound signal is not reflected in the volume control of the sound source 26, or an operator for selecting a tone to be set for the sound source 26 And a setting storage unit 22 in which set values of envelope parameters to be set in the sound source 26 are stored for each of the first mode and the second mode in association with each tone.
A setting change unit 24 that reads the set values of the envelope parameters stored in the setting storage unit 22 according to the operation of the operation unit 20 and outputs the set values to the sound source 26 to change the envelope set in the sound source 26; , Pitch detector 1
The pitch information output from 0, the sounding start instruction information / sounding stop instruction information output from the sounding / stop instructing unit 14, the initial sounding volume instruction information output from the initial volume instructing unit 16, and the output from the envelope adjusting unit 18. And a sound source 26 which is a PCM sound source for generating and outputting a musical tone in accordance with the set volume envelope and the envelope whose setting has been changed by the setting changing unit 24.

Here, the envelope adjusting section 18 outputs the volume envelope detected by the envelope detecting section 12 as it is, or performs compression, decompression, conversion by using a table prepared in advance, and outputs the result.

The setting storage unit 22 stores the set values of the envelope parameters set in the sound source 26 in the first mode and the set values of the envelope parameters in the sound source 26 in the second mode. The set value of the parameter of the envelope to be performed is stored. Taking the case where the timbre is a guitar as an example, the envelope set in the first mode is, for example, a flat-shaped envelope in which the volume at points P1 to P4 shown in FIG. 5 is maximized. The envelope set in the mode 2 is, for example, an envelope as shown in FIG. 2, and the setting storage unit 22 stores a set value of a parameter for setting the envelope as shown in FIGS. Is stored.

Although FIG. 4 shows the entire structure including the sound source 26, the sound source 26 has an external structure.
The electronic musical instrument according to the present invention and the sound source 26 are so-called MIDI
They may be connected by communication according to a standard or the like. At this time, the operation unit 20, the setting storage unit 22, and the setting change unit 24 illustrated above the sound source 26 in FIG. 4 have a configuration on the electronic musical instrument side according to the present invention, not the configuration on the sound source 26 side. is there. In the embodiment of the present invention, the setting storage unit 22 stores the first
In this configuration, both the set values of the envelope parameters set in the sound source 26 in the second mode and the set values of the envelope parameters set in the sound source 26 in the second mode are stored. (That is, the change over time of the volume envelope of the external sound signal is
It is not always necessary to store the set values of the envelope parameters set in the sound source 26 in the mode in which the sound source 26 is not reflected in the sound source 26. Of course, a configuration may be used in which the parameter values are stored together with the corresponding waveform information, and the set values of the parameters of the corresponding envelope are set based on the tone color selected by operating the operating section 20. In this case, it is necessary to provide a configuration for transmitting information (a program change in MIDI) of the timbre selected by operating the operating section 20 to the sound source 26.

FIG. 6 shows a detailed configuration of the sound source 26. The sound source 26 includes the pitch information output from the pitch detection unit 10 and the sound output from the sound / stop instruction unit 14. A waveform is generated by the generator 10a based on the start / stop instruction information, and a TVA
An envelope set based on the initial sound volume instruction information output from the initial volume instruction unit 16 and the parameter output from the setting change unit 24 is added by a (Time Variant Amplifier: time-varying amplifier) 10b, and further, the envelope adjustment unit 18 The volume 10c is adjusted according to the volume envelope output from the device, and a musical tone is output.

In the above configuration, the operation of the above-described electronic musical instrument will be described. First, a case will be described in which the operating section 20 is operated to select the guitar as the timbre and the first mode. In this case, the parameter indicating the envelope shown in FIG. 5 is read from the setting storage unit 22 by the setting change unit 24 and output to the sound source 26, so that the envelope shown in FIG. As the external sound signal, a signal indicating the envelope shown in FIG. 1 due to the string vibration of the guitar is input, and the envelope adjusting unit 18 outputs the volume envelope detected by the envelope detecting unit 12 as it is. I do.

When an external sound signal is input to the electronic musical instrument set as described above, the pitch detecting unit 10 detects the pitch of the external sound signal, and the pitch detecting unit 10 transmits the pitch information to the sound source 26. Is output, and a volume envelope of the external sound signal is detected by the envelope detection unit 12.
And output to the envelope adjuster 18 to generate the sound source 26
To output the sound generation start / stop instruction information, the initial sound volume instruction information, and the volume envelope.

When the tone generation start instruction information is output from the tone generation / stop instruction unit 14, the sound source 26 sounds at the pitch specified by the pitch information and the initial volume specified by the initial sound volume instruction information. Is started, and when sound generation stop instruction information is output from the sound generation / stop instruction unit 14, the sound source 26 stops sound generation.

At this time, as shown in FIG. 6, the volume of the musical tone being generated is an envelope obtained by superimposing the envelope set on the sound source 26 and the volume envelope of the external sound signal output from the envelope adjusting section 18 to the sound source 26. Will be specified by Here, the envelope set in the sound source 26 by the setting change unit 24 is the envelope shown in FIG. 5 and is a flat envelope in which the volume of each of the points P1 to P4 is maximized. Even when the volume envelope of the external sound signal shown in FIG. 1 output from FIG. 1 and the flat envelope shown in FIG. 5 are superimposed, the volume change of the musical tone during sounding is very similar to the volume envelope shown in FIG. A volume change controlled by the envelope shown in FIG. 7 can be obtained. Note that the envelope shown in FIG. 7 is the same as the envelope shown in FIG. 1 from point P1 to point P4, and is a so-called envelope from sound generation stop instruction to mute.
Only the shape of the release part is slightly different.

Next, a case will be described in which the operating section 20 is operated to select the guitar as the timbre and the second mode. In this case, the parameter indicating the envelope shown in FIG. 2 is read from the setting storage unit 22 by the setting change unit 24 and output to the sound source 26, so that the envelope shown in FIG. As the external sound signal, a signal indicating the envelope shown in FIG. 1 due to the string vibration of the guitar is input, and the envelope adjusting unit 18 outputs the volume envelope detected by the envelope detecting unit 12 as it is. I do. However, in the second mode, as will be described later, the volume envelope output from the envelope adjusting unit 18 is not particularly used for musical tone control, so that the envelope adjusting unit 18 may not be driven.

When an external sound signal is input to the electronic musical instrument set as described above, the pitch detecting unit 10 detects the pitch of the external sound signal, and the pitch detecting unit 10 transmits the pitch information to the sound source 26. Is output, and a volume envelope of the external sound signal is detected by the envelope detection unit 12.
And output to the envelope adjuster 18 to generate the sound source 26
To output the sound generation start / stop instruction information, the initial sound volume instruction information, and the volume envelope.

When the tone generation start instruction information is output from the tone generation / stop instruction unit 14, the sound source 26 sounds at the pitch specified by the pitch information and the initial volume specified by the initial sound volume instruction information. Is started, and when sound generation stop instruction information is output from the sound generation / stop instruction unit 14, the sound source 26 stops sound generation.

Here, in the second mode, at this time, the volume 10c of the sound source 26 shown in FIG. 6 is set to a fixed value such as the highest level, regardless of the volume envelope output from the envelope adjuster 18. To be done. To this end, although not shown in the configuration of FIG. 4,
For example, a line for transmitting mode information from the operation unit 20 to the sound source 26 is provided, and when the second mode is selected by the operation unit 20, the above setting is automatically performed on the sound source 26. What should I do? Alternatively, although not shown in the configuration of FIG. 4, for example, a line for transmitting mode information from the operation unit 20 to the envelope adjustment unit 18 is provided, and the second mode is selected by the operation unit 20. The same result can be obtained by outputting a certain envelope to the sound source 26 instead of the volume envelope detected by the envelope detector 12 in the envelope adjuster 18.

As will be described later, the original operation of the envelope adjusting unit 18 is different from that described above, so that the envelope detected by the envelope detecting unit 12 is used as it is separately from the envelope adjusting unit 18. Of course, it is also possible to add a block that functions to switch between sending or sending a certain envelope instead of the detection envelope to the sound source 26 according to the selected mode, as a configuration before or after the envelope adjusting unit 18. Good.

With the above arrangement, the volume of the musical sound being generated is specified only by the envelope set in the sound source 26. That is, the volume of the musical tone being sounded is not affected by the change in the volume envelope of the input external sound signal.

In the first mode, the envelope adjusting section 18 outputs the volume envelope detected by the envelope detecting section 12 as it is.
Although the volume envelope of the input external sound signal may be used as it is, the envelope may be compressed and expanded by the envelope adjusting unit 18, converted by a prepared table, or the like, and output. In some cases, a musical tone with a more natural playing feeling can be obtained.

For example, when an external sound source (hereinafter, referred to as an “external sound source”) connected by communication according to the MIDI standard or the like is used as the sound source 26 in the electronic musical instrument, the sound is detected by the envelope detection unit 12. If the volume envelope is transmitted to an external sound source as it is, a musical tone with an emphasized attack may occur. this is,
This is a phenomenon that occurs because the curve of the volume change between the sending side and the receiving side is different. In order to prevent such a phenomenon, it is preferable that the envelope adjuster 18 corrects the curve of the volume envelope on the sending side so that the volume envelope on the receiving side changes naturally.

Further, for example, when controlling a filter, it is preferable to output a certain value even when the volume is 0, based on the volume envelope detected by the envelope detection unit 12. In some cases, a reverse curve can produce interesting effects.
As described above, it is effective to adjust the curve of the volume envelope by performing compression, decompression, conversion using a prepared table, or the like in accordance with the parameters to be controlled.

The envelope shown in FIG. 8 is a limiter applied to the audio signal with respect to the volume envelope shown in FIG. 1 detected by the envelope detector 12 (the limiter compresses a signal having a threshold level or higher at a set compression rate. This is an example of a case where the same compression processing as that described above is performed. When such an envelope as shown in FIG. 8 is used for the tone of a guitar, it is possible to obtain an effect as if an external compressor were connected.

When the volume envelope detected by the envelope detector 12 is used for controlling the sound source 26 (first mode), the optimum setting of the sound source 26 differs depending on the characteristics of the external sound signal to be input. Is preferable. That is, by changing the envelope set in the sound source 26, particularly the shape of the rising edge thereof, in accordance with the tone color input as the external sound signal, it is possible to obtain a musical tone with a more natural playing feeling. Note that a section (point P1 to point P4) from when the envelope rises to when it falls may have a flat shape.

Here, as an example, a case where a tone with a gradually increasing volume is produced will be described. When a string vibration of a guitar is used as an external sound signal to be input, the volume is gradually increased by playing the guitar. Since it is difficult to move the sound source 26, an envelope having a gentle rising as shown in FIG. 9 may be set for the sound source 26, and a gentle rising of the volume may be formed on the sound source 26 side.

However, when a human voice is used as an external sound signal to be input, it is possible to generate a volume envelope whose volume gradually changes by utterance. May be set, and it is not necessary to form a gradual rise in volume on the sound source side.

In the above-described embodiment, the control of the sound volume among the characteristics of the musical tone generated by the sound source 26 has been described. However, the characteristic tone or pitch, the volume, the timbre, and the like of the musical tone other than the volume are described. It goes without saying that the present invention may be applied when controlling an appropriate combination such as a pitch.

For example, a description will be given of the control of the pitch among the characteristics of the musical tones generated by the sound source 26. In the case of a drum tone, the pitch changes according to the envelope, but the pitch varies according to the envelope detected by the envelope detector 12. By controlling the envelope related to the change in the pitch set in the sound source 26, the phenomenon in which the pitch changes according to the envelope can be faithfully simulated.

The control of the timbre in the characteristics of the musical tones generated by the sound source 26 will be described. If the envelope of the filter is controlled by the volume envelope detected by the envelope detector 12, an effect like an auto wah can be obtained. Can be.

[0054]

Since the present invention is configured as described above, when controlling the characteristics of the musical sound generated by the musical sound generating means by the volume envelope of the external sound signal, it is set in the musical sound generating means. Since it is possible to automatically perform processing for changing the envelope related to the characteristic of the musical tone being played, it is possible to easily change the envelope setting related to the characteristic of the musical tone set in the musical sound generating means. It has excellent effects.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an envelope showing a time change of an input sound volume due to a string vibration of an input guitar.

FIG. 2 is an explanatory diagram of an envelope showing a time change of a volume set for a sound source.

FIG. 3 is an explanatory diagram of an envelope in which the envelope shown in FIG. 1 and the envelope shown in FIG. 2 are superimposed.

FIG. 4 is a block diagram showing an example of an embodiment of an electronic musical instrument according to the present invention.

FIG. 5 is an explanatory diagram of an envelope set in a first mode.

FIG. 6 is an explanatory diagram showing a detailed configuration of a sound source.

FIG. 7 is an explanatory diagram of an envelope in which the envelope shown in FIG. 1 and the envelope shown in FIG. 5 are superimposed.

8 is a limiter applied to an audio signal with respect to the volume envelope shown in FIG. 1 detected by the envelope detection unit (the limiter performs a process of compressing a signal having a threshold level or higher at a set compression ratio).
FIG. 10 is an explanatory diagram of an envelope when the same compression processing as that described above is performed.

FIG. 9 is an explanatory diagram of an envelope formed with a gentle rise.

FIG. 10 is an explanatory diagram of an envelope formed with a sharp rise.

[Explanation of symbols]

 Reference Signs List 10 pitch detecting section 12 envelope detecting section 14 sounding / stop instructing section 16 initial volume indicating section 18 envelope adjusting section 20 operation section 22 setting storage section 24 setting changing section 26 sound source

Claims (7)

[Claims] 1. An input unit for inputting an external sound signal, a volume envelope detecting unit for detecting a volume envelope of the external sound signal input from the input unit as needed, and the external sound signal input from the input unit The tone generation start instruction information is generated based on the tone generation start instruction information, and the sound generation start instruction information is sent to dependent tone generation means that controls a predetermined characteristic of the generated tone by a preset envelope. The sound generation start instruction information generating means for outputting the tone generation instruction information, and the predetermined volume of the tone generated by the dependent musical sound generation means according to the sound generation start instruction information is controlled as needed by the envelope detection means. Control means; and a preset musical tone set in said dependent musical tone generating means. It said predetermined configuration of said envelope related characteristics, an electronic musical instrument characterized by having a setting changing means for changing the predetermined value determined in the electronic musical instrument. 2. An input unit for inputting an external sound signal, a volume envelope detecting unit for detecting a volume envelope of the external sound signal input from the input unit as needed, and the external sound signal input from the input unit The tone generation start instruction information is generated based on the tone generation start instruction information, and the sound generation start instruction information is sent to dependent tone generation means that controls a predetermined characteristic of the generated tone by a preset envelope. Means for outputting sound generation start instruction information, and the volume envelope detected at any time by the envelope detection means for controlling the predetermined characteristic of the tone generated by the dependent tone generation means in accordance with the sound generation start instruction information. Control means for selectively performing, and the control means controls the volume envelope. When the predetermined characteristic of the tone generated by the dependent tone generating means is to be controlled as needed, the setting of the envelope related to the predetermined characteristic of the tone set in advance by the dependent tone generating means is determined by a predetermined method. To the value of
If the control means does not perform the occasional control of the predetermined characteristic of the tone generated by the dependent tone generating means by the volume envelope, the predetermined tone of the tone set in advance by the dependent tone generating means is not controlled. An electronic musical instrument comprising: a setting change unit that does not change a setting of the envelope relating to the characteristic of the envelope to a predetermined value. 3. The electronic musical instrument according to claim 2, wherein the control means performs occasional control of the predetermined characteristic of the tone generated by the dependent tone generation means by the volume envelope, and performs the occasional control. Switching control means for arbitrarily switching between and no selection, and wherein the control means selects the predetermined tone of the tone generated by the dependent tone generation means by the volume envelope according to the switching selection of the switching selection means. An electronic musical instrument characterized by selectively performing control at any time with the characteristic of (1). 4. The electronic musical instrument according to claim 1, wherein the predetermined value is a maximum value at a predetermined point of the envelope. 5. The predetermined characteristic includes a volume of a musical sound, a timbre,
The electronic musical instrument according to any one of claims 1, 2, 3, and 4, wherein the electronic musical instrument is a pitch or a combination thereof. 6. The apparatus according to claim 1, wherein said setting change means changes the setting of said envelope according to a type of said external sound signal.
An electronic musical instrument according to claim 5. 7. The electronic musical instrument according to claim 1, wherein the external sound signal is a string vibration signal. .