JP2990829B2 - Effect giving device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument for generating a musical tone corresponding to the pitch of a key depressed on a keyboard by a plurality of output devices in three-dimensional sound.

[0002]

2. Description of the Related Art Conventionally, in an electronic musical instrument, for example, as disclosed in Japanese Patent Publication No. Sho 62-55158, a tone signal is synthesized by synthesizing a tone signal and a reverberation signal generated by delaying the tone signal. It is known that a reverberation sound is added and pronounced, and a reverberation effect in a performance hall or the like can be obtained. In this electronic musical instrument, a predetermined reverberation can be added according to the selected tone.

Acoustic pianos have a large number of strings corresponding to each key and a damper for individually suppressing the vibration of each string. If the key is pressed normally, only the damper of the corresponding string is opened. Only the open strings vibrate, but all or some of the strings can be turned to open strings with the pedal at the foot. Strings having a special pitch relationship, such as an octave relationship in frequency characteristics, resonate particularly, and a resonance effect as if the whole piano began to sound is obtained.

Further, for example, when one key is pressed normally while several keys are being pressed quietly, the string with the damper released by the key depression resonates with the struck sound. This phenomenon is also found in pipe organs and the like, and it is possible to obtain a rich sound effect such that the sound changes according to the performance.

[0005]

However, in the conventional electronic musical instrument, the reverberation added to the musical tone is determined by the selected timbre and the musical instrument itself. It was difficult to obtain. SUMMARY OF THE INVENTION It is an object of the present invention to obtain a rich sound effect such as a change in sound depending on performance in an electronic musical instrument.

[0006]

Means for Solving the Problems] effect applying apparatus of the present invention, the tone in stereophonic by supplying a tone signal generated in response to the generation direction of the tone to the output device of the multi <br/> number In the effect applying device, the plurality of outputs are provided.
To control the characteristics of each tone signal supplied to the input device.
A sound image localization for localizing the tone signal at a predetermined position.
Position means and each tone signal supplied to the plurality of output devices
Reverberation effect processing means for adding reverberation to the sound image,
Changing and controlling the sound image localization position of the tone signal in the first stage
At the same time, the reverberation effect processing means adds to the tone signal
Control of the sound image localization position by changing the volume level of the reverberation
By changing the time independently of the sound image
A control means for controlling the localization position and the time change of the sound image size
And a step .

[0007]

The effect imparting device of the present invention produces a tone signal by supplying a tone signal generated in response to an instruction to generate a tone by pressing a key or the like to a plurality of output devices. At this time, the sound image localization means controls each music supplied to the plurality of output devices.
By controlling the characteristics of the sound signal, the tone signal can be
The sound reverberation effect processing means uses multiple output devices.
Control means for adding reverberation to each tone signal supplied to the
Changes the sound image localization position of the tone signal in the sound image localization means.
Along with the reverberation effect processing means
The volume level of the reverberation to be added can be controlled by changing the sound image localization position.
Is time-varying independently to determine the sound image of the tone signal.
The position and the temporal change in the size of the sound image are controlled . In other words, the tone of a musical tone generated by a key press or the like is controlled in its sound image localization, and the size of the sound image changes with time from the time the key is pressed, and the sound changes according to the performance.

[0008]

FIG. 1 is a block diagram showing an embodiment of an electronic musical instrument according to the present invention. A keyboard 1 is composed of, for example, 88 keys and switches corresponding to the respective keys. The child 2 is composed of a sustain pedal and a soft pedal.

The operation detecting section 3 detects the operation state of the keyboard 1 and the operating element 2 and, by operating the keyboard 1, a key-on signal (KON) corresponding to the key release and the key corresponding to the pressed key. Touch signal (T) indicating the chord (KC) and the strength of the key press
CH), and the operation of the operating element 2 generates a pedal signal (PDL) indicating ON / OFF of the sustain pedal or the soft pedal and the amount of depression.

The setting section 4 is an input section for designating a tone color of a musical tone, a type of reverberation sound, and the like using an operation switch or the like (not shown), and a sound source parameter (TG) corresponding to the designated tone color.
An effect parameter signal (EFP) corresponding to the reverberant sound designated as P) is output.

The tone waveform generator 5 generates a tone signal (digital tone signal) (digital tone signal) based on each signal (KON, KC, TCH, PDL) from the operation detector 3 and a tone generator parameter signal (TGP) from the setting unit 4. WAVE) and outputs it to the sound image effect imparting unit 6. Note that sound source parameters (TG
P) is setting data relating to a tone such as a waveform of a generated tone signal, and generates a tone and a tone corresponding to a depressed key of the keyboard 1 and a tone signal corresponding to the tone set by the setting unit 4.

The sound image effect imparting section 6 adds a reverberation signal to the tone signal (WAVE) input from the tone waveform generating section 5 to output tone signals (L _OUT , R _OUT ) of both left and right channels. Tone signal (L _OUT , R
_OUT ) are output to the speakers 10L and 10R via the D / A converters 8L and 8R and the amplifiers 9L and 9R, respectively, and the musical sound is output in stereo.

The effect control section 7 sends an effect control parameter to the sound image effect applying section 6 based on the effect parameter signal (EFP) from the setting section 4 and the key-on signal (KON) and pedal signal (PDL) from the operation detecting section 3. Signal (EFCP)
Is output. Thereby, the sound image effect imparting section 6 changes the level of the tone signal of each of the left and right channels, and also changes the level of the reverberation signal of each of the left and right channels to be added to the tone signal of both the left and right channels. The sound image is changed according to the level of the reverberation signal.

FIG. 2 is a block diagram of the sound image effect imparting section 6 and the effect control section 7. The sound image effect imparting unit 6 includes multipliers 61L and 61R for adjusting the levels of the tone signals (WAVE) for both the left and right channels, a reverberation effect processing unit 62 for generating reverberation signals corresponding to the left and right channels from the tone signals,
Multipliers 63L and 63R for adjusting the level of the reverberation signal from the reverberation effect processing unit 62;
Adders 64L and 64R for adding reverberation signals from L and 63R to respective tone signals from multipliers 61L and 61R, respectively.
It has.

The effect control unit 7 includes a level / localization coefficient generation unit 71 for setting the levels of the tone signal and the reverberation signal, a reverberation parameter generation unit 72 for specifying the characteristics of the reverberation signal, and an envelope for setting the envelope of the reverberation signal. A generator (EG) 73 and multipliers 74L and 74R for changing the level of the reverberation signal in accordance with the envelope are provided.

The effect parameter (EFP) input to the effect control unit 7 is volume / localization setting data (VOLPA) for setting the overall volume and the volume distribution of the left and right channels.
N), reverberation signal setting data (REV
P) and envelope setting data (EGP) relating to the envelope of the reverberation signal.

In the sound image effect imparting section 6, the input tone signal is multiplied by predetermined coefficients by multipliers 61L and 61R to generate tone signals of both left and right channels.

The reverberation effect processing unit 62 is, for example,
It is composed of a well-known reverberation sound adding device similar to that disclosed in -55158, and generates a reverberation signal by a number of delay circuits and multipliers. In order to make this reverberation signal a stereo output corresponding to both the left and right channels, the output position of the delay circuit may be changed to generate a reverberation signal having a phase shift corresponding to both the left and right channels.

The reverberation signal from the reverberation effect processing unit 62 is multiplied by coefficients by multipliers 63L and 63R.
4L and 64R, respectively, are added to the tone signals of both the left and right channels, and tone signals (L _OUT , R
_OUT ) is output from the adders 64L and 64R.

On the other hand, in the effect control section 7, the level / localization coefficient generation section 71 generates a multiplication coefficient for determining the volume and the localization based on the volume / localization setting data (VOLPAN) of the effect parameter (EFP), and performs the multiplication. Multiply coefficient by multiplier 6
Output to 1L and 61R. The multipliers 61L, 6L
The localization of the sound image is set by the multiplication coefficient of 1R. Further, the level / localization coefficient generation section 71 outputs a multiplication coefficient for determining the reference of the level of the reverberation signal to the multipliers 74L and 74R.

The reverberation parameter generator 72 detects a key-on signal (KON) when the depression of the pedal of the operating element 2 is detected in response to the pedal signal (PDL), and based on the reverberation signal setting data (REVP). The reverberation effect parameter (EFTP) thus generated is output to the reverberation effect processing unit 62. Note that this reverberation effect parameter (E
(FTP) is a delay time of a delay circuit in the reverberation effect processing unit 62, a multiplication coefficient of a multiplier, and the like, and characteristics of the reverberation signal are set by the reverberation effect parameter (EFTP).

The envelope generator (EG) 73
Is constituted by a known envelope generator similar to that disclosed in, for example, Japanese Patent Publication No. 58-9958, and determines the amount of pedal depression detected by envelope setting data (EGP) and pedal signal (PDL). A time change signal (E) is generated based on the time change signal. This time change signal (E)
Is generated by detecting a key-on signal (KON),
It is output to the multipliers 74L and 74R as a time-varying multiplication coefficient.

The multipliers 74L and 74R add the time-varying signal (E) from the envelope generator (EG) 73 to the multiplication coefficient set by the level / localization coefficient generator 71.
, And the multiplied values from the multipliers 74L and 74R are output as multiplier coefficients to the multipliers 63L and 63R of the sound image effect imparting unit 6.

FIG. 3 is a diagram showing an example of a time change of a signal and a time change of a sound image in the embodiment.
ON) at the rising edge (when the key is pressed) of the tone signal (WAV
E) and a time-varying signal (E) are generated. The tone signal gradually attenuates and abruptly attenuates by the fall of the key-on signal (at the time of key release), and the time change signal (E) gradually increases from the rise of the key-on signal and attenuates by the fall of the key-on signal. As a result, the reverberation component of the tone output in stereo gradually increases from the time of key depression, and the sound image becomes blurred as the reverberation component increases. Therefore, the sound image, which has a substantially point shape immediately after the key is depressed, gradually expands, and the sound effect changes.

As described above, the sound image of the musical tone generated by the key depression is gradually expanded from the time of the key depression, and, for example, a sound similar to the resonance effect of the piano can be obtained, and a rich acoustic effect can be obtained.

In the above example, the sound image is gradually expanded from the time of key depression. For example, as shown in FIG. 4, the time change signal (E) is gradually attenuated from the rise of the key-on signal, and immediately after the key depression. However, an interesting sound effect can be obtained even if the sound image is widened and gradually focused to a point-like sound image.

Further, as shown in FIG. 5, the time change signal (E) may be changed in a wave form from the rise of the key-on signal so that the size of the sound image is expanded while oscillating. Alternatively, the sound image may be focused while being vibrated.

In the above embodiment, the sound image is changed by adding a reverberant sound to the musical sound. However, other effects such as a chorus for changing the delay time of the musical sound signal and a fuzz shift for changing the phase are provided. Alternatively, the sound image may be changed.

[0029]

According to the effect imparting device of the present invention as described above, according to the present invention, to provide a musical tone signal generated in response to the generation direction of the musical tone by pressing or the like to a plurality of output devices
Ri to generate musical tones with stereophonic, this time, a plurality of output instrumentation
Adds reverberation to each tone signal supplied to the
The reverberation volume level to change the sound image localization position.
By changing the time independently of the control
The sound image localization position and the time change of the sound image size
The sound image localization position of the tone signal and the size of the sound image.
It is possible to control the temporal change in the, for example, such that the sound image a substantially point shape key pressing changes spread gradually
It gives a sound similar to the resonance effect of a piano, or gradually converges from a wide sound image when a key is pressed to a point-like sound image, or
It is possible to obtain a rich sound effect in which the sound changes according to the performance, for example, the size of the sound image vibrates.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of an electronic musical instrument according to the present invention.

FIG. 2 is a block diagram of a sound image effect imparting unit and an effect control unit according to the embodiment of the present invention.

FIG. 3 is a diagram illustrating an example of a temporal change of a signal and a temporal change of a sound image in the embodiment of the present invention.

FIG. 4 is a diagram illustrating a second example of a temporal change of a signal and a temporal change of a sound image in the embodiment of the present invention.

FIG. 5 is a diagram illustrating a third example of a time change of a signal and a time change of a sound image in the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... keyboard, 2 ... operation element, 3 ... operation detection part, 4 ... setting part,
5 musical tone waveform generating section, 6 sound image effect applying section, 7 effect control section, 10L, 10R speaker.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G10H 1/00 G10K 15/00-15/12 H04S 1/00-7/00

Claims (1)

(57) [Claims] 1. An effect imparting device for generating a musical sound by stereophonic sound by supplying a musical sound signal generated in response to a musical sound generation instruction to a plurality of output devices , wherein the musical sound signal is supplied to the plurality of output devices. Control the characteristics of each tone signal
The sound signal is localized in a predetermined position by controlling the tone signal.
Sound image localization means for reverberating each tone signal supplied to the plurality of output devices.
Reverberation effect processing means to be added, and a sound image localization position of the tone signal in the sound image localization means
And the reverberation effect processing means.
The reverberation volume level added to the tone signal is determined by the sound image localization.
By changing the time independently of the position change control,
The sound image localization position of the tone signal and the time change of the sound image size
An effect imparting device , comprising: control means for controlling .