JP2800429B2 - Sound image localization control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound image localization control device for controlling sound image localization of sound output from a speaker or the like.

[0002]

2. Description of the Related Art Generally, sound is output from two or more channels of speakers and the sound pressure level of the sound output from each speaker is controlled, so that the localization of a sound image in the sound field can be arbitrarily controlled. . For example, when the localization of the sound image is controlled by the sound pressure level, the sound images are localized and heard in the direction of the larger sound pressure level by changing the sound pressure levels of the left and right speakers while keeping the sound output constant. To do. At this time, a stereo panpot is used to keep the sound output constant. This stereo
The pan pot controls the magnitude of the left and right sound pressure levels so that even if the sound image is panned to an arbitrary position in the sound field, the sound output thereof becomes a constant level. Also,
Delay time (delay time) By using a delay device of 15 to 30 milliseconds to delay the input signal so that the sound output from the left and right speakers reaches the ear differently, so that the sound reaches the ear earlier. Make sound images localized and audible.

Conventionally, in an electronic musical instrument, the localization of musical tones has been arbitrarily controlled by the above-described method to improve the performance effect. That is, according to time change information from a low frequency oscillator (LFO) or an envelope oscillator (EG), press information from a keyboard, or operation information from various operators such as a modulation wheel or a pedal, the above-mentioned stereo / The localization of the musical tone has been controlled by variably controlling the panning position of the pan pot.

[0004]

When the tone localization is controlled in accordance with time change information from a low-frequency oscillator or an envelope oscillator, the ratio of the localization change (change range and change speed) becomes monotonous, and It is not possible to express sensory localization changes due to, and improvement in performance effect cannot be expected. In addition, when the tone localization is controlled in accordance with the press information from the keyboard or the operation information from various controls such as a modulation wheel and a pedal, the player can operate the keyboard and controls to perform sensory localization. Changes can be expressed, but skill is required to operate the keyboard and controls, and when operating one hand or foot switch each time the localization control is performed, one foot is restricted by the operation of the controls, and the main performance operation You will not be able to concentrate on all nerves.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a sound image in which a player can easily and intuitively control musical sound localization without operating a controller or the like. An object is to provide a localization control device.

[0006]

Means for Solving the Problems A sound image localization control device according to the present invention analyzes external sound input means for inputting a sound signal generated by an operator, and a sound signal input from the external sound input means . About the different properties of the sound
Te, and analyzing means for extracting and outputting characteristic data indicating the nature, respectively, a plurality of different control factors related to the sound image localization
Localization control coefficients corresponding to the
A is off as a localization control coefficient generating means for generating a localization control coefficients corresponding to different control factors of said plurality of in accordance with the characteristic data indicating the plurality of different nature, respectively, the sound signal to be sound image localization control Is input to the sound signal and the complex generated by the localization control coefficient
And localization control means for performing sound image localization control according to localization control coefficients corresponding to different numbers of control factors .

[0007]

When a sound signal is generated by an operator, the sound signal is input to an analysis means via an external sound input means and analyzed, and characteristic data indicating a plurality of different properties of the sound are extracted and output. Is done. Duplication about sound
The characteristic data indicating the different properties include, for example, pitch data, volume level data, formant data, and the like specific to the input sound signal. The localization control coefficient generator, respectively to generate a localization control coefficients corresponding to a plurality of different control factors in accordance with the characteristics data indicating a plurality of different properties were analyzed. Multiple different sound image localizations
The control factors include, for example,
Change speed. The localization control means inputs a sound signal to be subjected to sound image localization control, and performs sound image localization control on the sound signal in accordance with localization control coefficients corresponding to the plurality of different control factors . As a result, the sound image localization is variably controlled in real time according to the sound signal generated by the operator, and the operator can simply generate the sound signal without complicated manual operation of the operator for sound image localization control. In addition to the excellent effect of being able to freely control the sound image localization by simple operation as much as possible ,
By a simple operation of simply generating a sound signal and inputting it to the external sound input means, characteristic data showing a plurality of different properties can be obtained.
Generates data, which makes it possible to control a plurality of different sound image localization control element at a stroke respectively, it sounds different
Complex sound image localization control is possible by controlling the image localization control factor.
It has an excellent effect that it can be easily realized . As an example, the localization control means inputs a sound signal input from the external sound input means as a sound signal to be subjected to the sound image localization control. According to this, the sound image localization can be variably controlled by the sound signal itself to be subjected to the sound image localization control, and interesting sound image localization control can be performed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In the embodiment shown in FIG. 1, the performance operation means 10 is a basic operation element for music performance. In this embodiment, a keyboard provided with a plurality of keys for selecting the pitch of a musical tone to be produced is exemplified. Will be described. The keyboard has a key switch corresponding to each key and, if necessary, a touch detecting means such as a pressing force detecting device.

The performance operation detecting means 11 is a
(Whether or not there is a pressed key), that is, the on / off state of each key switch in the performance operation detecting means 11. For example, a scanning circuit for scanning each key switch in order, A key-on signal KON indicating that the key has been pressed, a key code KC indicating that the key has been pressed, a key-off signal indicating that the key has been released, and the like. . Further, the performance operation detecting means 11 determines the key-depressing operation speed at the time of depression based on the output from the key switch as necessary, and outputs initial touch data. The pressing force is detected from the output of the pressing force detecting device when the pressing is continued, and after-touch data is output. In the present embodiment, the initial touch data and the after touch data are indicated as touch data TD.

The controls 12 include various controls for selecting, setting, and controlling the tone, volume, pitch, effect, etc., and include various natural musical instruments such as pianos, organs, violins, brass instruments, and guitars. A tone color selection switch for selecting a tone color corresponding to, and other various tone colors, for example, a modulation wheel for outputting a signal of 128 steps, a pitch bend wheel for outputting a signal indicating positive / negative directionality, and localization control by a localization control means 18. Input signal selection switch for selecting a signal to be transmitted.

The operating element detecting means 13 detects the operating state of the operating element 12 and sends a tone selection signal TC indicating the tone selected by the tone selection switch to the tone signal generating means 15 and an operating indication indicating the operation amount of the modulation wheel or the like. The amount signal MD is output to the localization control coefficient generator 18 and the selection signal SI of the input signal selection switch is output to the input selector 16. The parameter generating means 14 outputs parameter data for designating a tone to be generated by the tone signal generating means 15 to the tone signal generating means 15 and is required by the localization control coefficient generating means 18 to set a localization control coefficient to be generated. Various kinds of parameter data PD are output to the localization control coefficient generator 18.

The tone signal generating means 15 is capable of simultaneously generating tone signals on a plurality of n channels, and includes a key-on signal KON, a key code KC, and a touch data of a key assigned to each channel provided via a data line. TD,
The timbre selection signal TC, parameter data and other data are input, and a tone signal is generated based on these various data. In this embodiment, the number n of channels that can be sounded simultaneously
Is described as 16. The input signal selection means 16 selectively outputs either the tone signal of the tone signal generation means 15 or the external tone signal to the localization control means 19,
It is controlled by the selection signal SI of the operation element detecting means 13.

The external sound analyzing means 17 outputs an external sound signal as
For example, by inputting the voice of the player himself and analyzing the voice, the pitch (pitch) data PI of the voice is obtained.
D, volume level data LD, formant data for characterizing the sound (four formant center frequency data PFD and its level PLD), and the like are output. The external sound analysis means 17 outputs the analysis results (pitch data PID, volume level data LD, formant data PFD, P
LD or the like may be output directly, or may be output after some processing. In the embodiment described below, the external sound analysis means 17 obtains the amount of variation of the formant center frequency and outputs it to the localization control coefficient generation means 18, and the pitch data PID and the volume level data LD are directly transmitted to the localization control coefficient generation means. 18 will be described separately.

The analysis method of the external sound analysis means 17 is as follows.
Fast Fourier Transform, Linear Predictive Analysis (Linear
Predictive Coding (LPC), Line Spectrum Pair Analysis (Line Spectrum Pa)
ir: LSP), complex sinusoidal model analysis (Compo)
site Sinnsoidal model: CS
M) and the like, using a well-known technique in the field of sound / speech analysis. The localization control coefficient generator 18 analyzes the external sound analyzer 17 (pitch data PID, volume level data LD, formant data PFD, PLD, etc.), the touch data TD of the performance operation detector 11, and the operation of the operator detector 13. The quantity signal MD and the parameter data PD of the parameter generating means 14 are input, and a localization control coefficient based on these various data is output to the localization control means 19.

The localization control means 19 includes an input signal selection means 16
The signal (tone signal or external sound signal) selected in step (1) is input, and the input signal is subjected to localization control according to the localization control coefficient and output. The digital signal subjected to the localization control by the localization control means 19 is converted into an analog signal by a D / A converter (not shown), and
Is output to The sound system 20 includes an amplifier and at least two speakers, and generates a sound according to an analog signal from the D / A converter. Therefore, the sound output from the speaker shows a localization corresponding to the external sound signal.

Next, the detailed configuration of the external sound analyzing means 17 will be described with reference to FIG. The external sound analyzing means 17 shown in FIG. 2 inputs a sound signal as an external sound signal, and converts the sound signal into formant data (formant center frequency data PF).
D and level data PLD). The formant extraction means 1 extracts predetermined formant data from the formant data and outputs a localization control signal.

The formant extraction means 1 is a linear predictive analysis method (Linear Predictive Codin).
g: LPC), line spectrum pair analysis (Line Sp)
(Electrum Pair: LSP), Composite Sinusoidal Model Analysis Method (CompositeSinsonoidal m)
and the like, and extracts four formant center frequencies and their levels from the audio signal. The formant extracting means 1 converts the four formant center frequency data PFD into changeover switches 2a to 2d and subtracters 4a to 4d.
Output to 4d.

The external data supply means 7 replaces the formant extraction means 1 with formant center frequency data PFD.
, For example, is constituted by a memory or the like in which a large number of formant center frequency data PFD are stored, and is controlled to be read out by the operation element 12. The changeover switches 2a to 2d correspond to the formant extracting means 1.
And formant center frequency data PFD from the external data supply means 7 and input one of them to the latch circuit 3a.
To 3d. The switch switching control means 8 controls switching of the switches 2a to 2d.

The trigger generating means 30 outputs a clock at a predetermined timing to the latch circuits 3a to 3d. The latch circuits 3a to 3d latch the formant center frequency data PFD from the changeover switches 2a to 2d at the clock timing from the trigger generating means 30, and output the latched formant center frequency data PFD to the subtracters 4a to 4d. Therefore, the formant center frequency data PFD shifted by one clock timing is input to the subtracters 4a to 4d, and the subtracters 4a to 4d calculate the difference of the formant center frequency data PFD shifted by one clock timing, and calculate the difference value. Is output to the multipliers 5a to 5d.

The weight generating means 50 outputs multiplication coefficients (weights) ka to kd to the multipliers 5a to 5d. Multipliers 5a-5
d is a value obtained by multiplying the difference values of the subtracters 4a to 4d by a multiplication coefficient as new difference values Δfa to Δfd.
Output to d. Latch circuits 6a to 6d include multipliers 5a to 5
The difference values Δfa to Δfd of d are latched at the clock timing from the trigger generation means 9. At this time, the trigger generating means 9 outputs four signals corresponding to the respective formant center frequencies.
The formant level data PLD is input from the formant extraction means 1, and a clock is output when the sum of the four formant level data PLD is equal to or more than a predetermined value. Therefore, when the sum of the formant level data PLD is equal to or more than the predetermined value, the latch circuits 6a to 6d
The difference values Δfa to Δfd of a to 5d are latched. The localization control coefficient generator 18 generates a localization control coefficient corresponding to the value latched in each of the latch circuits 6a to 6d. The localization control means 19 controls the localization of the input signal in accordance with the localization control coefficient from the localization control integer generation means 18 and outputs it.

Next, a detailed configuration of the localization control coefficient generating means 18 and the localization control means 19 of the volume localization control method will be described with reference to FIG. The localization control coefficient generator 18 includes a pan setting information generator 31, a pan setting coefficient memory 32, and four adders 33 to 36. The pan setting information generating means 31 receives various parameter data PD from the parameter generating means 14, touch data TD from the performance operation detecting means 11, and an operation amount signal MD from the operating element detecting means 13, and receives these signals. , Ie, the address data of the pan setting coefficient memory 32. The detailed configuration of the pan setting information generating means 31 will be described in an embodiment described later.

The pan setting coefficient memory 32 stores sounds output from four channel speakers (front left FL, front right FR, rear left RL, rear right RR) for each of the pan setting information (address data) from the pan setting information generating means 31. The four localization coefficients for volume control for setting the localization of are stored. Therefore, the pan setting coefficient memory 32 generates four volume control localization coefficients in accordance with the change of the address data from the pan setting information generating means 31. The volume control localization coefficients from the pan setting coefficient memory 32 are output to adders 33 to 36, respectively. Adder 33
Numerals 36 to 36 are multipliers 37 to 40 of the localization control means 19 as values obtained by adding the difference values Δfa to Δfd of the latch circuits 6a to 6d to the volume control localization coefficients from the pan setting coefficient memory 32 as new volume control localization coefficients. Output to The localization control means 19 inputs the input signal to multipliers 37 to 40 corresponding to the respective channels, multiplies the input signals by the volume control localization coefficients from the adders 33 to 36, and outputs the front left FL, front right FR, rear left RL, Output to each channel of the rear light RR.

Next, the operation of this embodiment will be described. The player plays the performance operation means 10 and utters a voice. The voice uttered by the player is converted into an external sound signal by a microphone or the like, and is input to the external sound analysis means. The formant extracting means 1 extracts formant center frequency data PFD and its level data PLD at a predetermined clock timing based on the external sound signal. Formant center frequency data PFD extracted by formant extraction means 1
The multiplication coefficient ka is added to the difference value of each clock timing
Ｋkd. At this time, when the values of the four formant level data PLD are equal to or larger than a predetermined value, the trigger generating means 9 outputs a clock pulse to the latch circuits 6a to 6d. The difference value Δf at that time is stored in the latch circuits 6a to 6d.
a to Δfd are latched. The difference values Δfa to Δfd
Varies slightly depending on the nature of the voice (voice volume, pitch, etc.) emitted by the player.

The pan setting information generating means 31 outputs pan setting information (address data) corresponding to the touch data TD and the operation amount data MD to the pan setting coefficient memory 32. The pan setting coefficient memory 32 outputs four channels of pan data. The set coefficient is output to each of the adders 33 to 36. Adder 3
Numerals 3 to 36 add the slightly changed difference values Δfa to Δfd to the respective pan setting coefficients and output them to the localization control unit 19 as new pan setting coefficients. The localization control means 19 multiplies an input signal of each channel by a pan setting coefficient, and outputs a signal subjected to localization control to a sound system at a subsequent stage.

From the pan setting coefficient memory 32 to the adders 33 to
The pan setting coefficient output to 36 is a coefficient capable of localization control while keeping the sound level of the input signal constant, but in this embodiment, since the difference values Δfa to fd are added to this pan setting coefficient, The sound whose sound level has changed is output from the system 20 simultaneously with the change in localization, so that a special sound effect can be exhibited. Conventionally, unless the player actively changes the values of the touch data TD and the operation amount data MD, the localization control coefficient generating means 18 outputs only a monotonous localization control coefficient at a substantially constant cycle. However, according to the present embodiment, the performer can intuitively control the localization and the sound level only by changing the nature of the voice simultaneously with the performance.

Next, another embodiment of the localization control coefficient generator 18 shown in FIG. 3 will be described with reference to FIG. 4, the same components as those in FIG. 3 are denoted by the same reference numerals, and the description thereof is omitted. This embodiment is different from that of FIG.
The difference value Δf of the latch circuits 6a to 6d is determined by the signal selection unit 41.
a to Δfd are selectively output to the adder 42, and the adder 42 adds the pan setting information of the pan setting information generating means 31 and the output value of the signal selecting means 41 to obtain a pan setting coefficient memory. 32. The pan setting coefficient memory 32 stores a pan setting coefficient corresponding to the pan setting coefficient to which the difference value has been added by the adder 42 in each of the multipliers 3.
Output to 7-40. Note that the signal selection means 41 may output a total value obtained by combining any of the difference values Δfa to fd. According to the embodiment of FIG.
The pan setting information generating means 31 changes according to fd.
Is the pan setting information output from. Accordingly, since the pan setting information changes according to the voice of the player, unlike the embodiment of FIG. 3, only the localization can be changed while the sound level is kept constant, and the localization control synchronized with the voice can be performed. It becomes possible.

The detailed configurations of the localization control coefficient generating means 18 and the localization control means 19 of the delay time localization control method will be described with reference to FIGS. 5 and 6, the same components as those in FIGS. 3 and 4 are denoted by the same reference numerals, and the description thereof will be omitted. 5 and 6 are different from those in FIGS. 3 and 4 in that the pan setting information generating means 31 and the pan setting coefficient memory 32 of the localization control coefficient generating means 18 are replaced with delay setting information generating means 51.
And a delay setting memory 52.
Delay circuits 53 to 56 in place of the multipliers 37 to 40
Is provided.

The delay setting information generating means 51 has substantially the same configuration as the pan setting information generating means 31. The delay setting memory 52 sets the localization of the sound output from the four-channel speakers (front left FL, front right FR, rear left RL, rear right RR) for each delay setting information (address data) from the delay setting information generating means 51. For this purpose, four localization coefficients for delay time control are stored. Therefore, the delay setting memory 52
Generates four delay time control localization coefficients in accordance with a change in address data from the delay setting information generating means 31. The delay circuits 52 to 55 delay the input signal by a predetermined time according to the localization coefficient for delay time control, and output the delayed signal to the sound system 20. Note that an all-pass phase shift circuit may be used instead of the delay circuit.

FIG. 7 shows an embodiment of the volume control system of FIG. 4 and FIG.
Another embodiment in which the localization control means of the embodiment of the delay time control method of the present invention is connected in series is shown. 7, the same components as those in FIGS. 4 and 6 are denoted by the same reference numerals. In this embodiment, the volume level of the input signal is determined by the multipliers 37 to 40.
To control according to the localization control coefficient of the pan setting coefficient memory,
It is delayed by a predetermined time corresponding to the localization control coefficient of the delay setting memory by the delay circuits 53 to 56 and output to the sound system 20. According to this embodiment, more complicated localization control can be performed by a combination of the localization control based on the volume and the localization control based on the delay time. In addition,
In this embodiment, the combination of FIGS. 4 and 6 has been described.
It goes without saying that two or more of the embodiments shown in FIGS. 4, 5, 6 and 7 may be arbitrarily combined.

As described above, a pseudo stereo space such as the Lolingen method (phase difference method) is created by using a delay circuit (all-pass phase shift circuit) whose delay time (phase difference) is variably controlled by voice. Also, the spatial distribution can be controlled arbitrarily by voice, and the comb filter characteristics of the four speakers are slightly different, allowing for unique music effects such as a unique ensemble (chorus) effect and a sense of spaciousness. It becomes possible.

Next, another embodiment of the localization control coefficient generating means will be described with reference to FIG. This embodiment is different from the above-described embodiment in that the external sound analysis means 17 extracts pitch (pitch) data PID and its volume level (speech amplitude) data LD from an external sound, and uses these data to perform panning. The point is that the pan setting information generated by the setting information generating means 31 is changed. The external sound analysis means 17 inputs the performer's own voice as an external sound and analyzes it to output the pitch data PID and the level data. The analysis method of the external sound analysis means 17 employs a fast Fourier transform method and other techniques well known in the field of sound / speech analysis.

The parameter generating means 14 generates various parameter data for changing the pan setting information.
The parameter data includes an operation amount signal coefficient MS, a touch signal coefficient TS, an external sound level coefficient LS, an external sound pitch coefficient PS, and the like for determining a multiplication ratio of the multipliers 87 to 90. Output waveform, amplitude data LA for determining the oscillation frequency and oscillation amplitude, waveform designation data LW, amplitude control coefficient LLS, and frequency data L
F and a frequency control coefficient LFS. The localization preset value PAN is an initial value of the localization of the sound generated from the sound system 20, and is directly output to the adder 91. Accordingly, since the pan setting coefficient memory 32 which has received the localization preset value outputs the same localization coefficient, the same volume of sound is output from the 4-channel speaker, and the localization is located at the center.

The low frequency oscillator 81 generates a low frequency signal for periodically variably controlling the pan setting information. The output waveform of the low-frequency oscillator 81 is selected and designated by the waveform designation data LW, and the oscillation frequency is input to the low-frequency oscillator 81 via the multiplier 82 and the adder 83.
The oscillation amplitude is controlled by the level data of the external sound analysis means 17 input to the multiplier 86 via the multiplier 84 and the adder 85. The localization swing width (movement range of the sound image) changes according to the oscillation amplitude of the low frequency oscillator 81, and the localization change speed (movement speed of the sound image) changes according to the oscillation frequency. Therefore, it is possible to variably control the localization periodic fluctuation width (the size of the moving range of the sound image), the localization periodic fluctuation speed, and the like according to the external sound, that is, the loudness and pitch of the performer's voice. For example, when the performer's voice becomes louder, the amplitude of the localization gradually increases, and when the pitch of the voice becomes higher, the localization fluctuation period becomes shorter.

The multiplier 82 receives the pitch data PID of the external sound analysis means 17, multiplies it by the value of the frequency control coefficient LFS, and outputs the result to the adder 83. The adder 83 receives the result of the multiplication, adds the value of the frequency data LF to the result, and outputs the result to the low-frequency oscillator 81. Frequency control coefficient LFS
Is a value indicating a multiplication coefficient of the multiplier 82, and the frequency data LF is data for determining a reference value of the oscillation frequency of the low frequency oscillator 81. Therefore, even if the pitch data PID is not output from the external sound analysis means 17, the low frequency oscillator 81 outputs a signal having a frequency corresponding to the frequency data LF.

The multiplier 84 receives the level data of the external sound analysis means 17, multiplies it by the value of the level control coefficient LLS, and outputs the result to the adder 85. The adder 85 receives the result of the multiplication, adds the value of the amplitude data LA thereto, and outputs the result to the multiplier 86. The multiplier 86 receives the low-frequency signal from the low-frequency oscillator 81, multiplies the low-frequency signal by the addition result of the adder 85, and outputs the result to the adder 91. The level control coefficient LLS is a value indicating a multiplication coefficient of the multiplier 84, and the level data LA
Is data for determining the reference value of the oscillation amplitude of the low frequency oscillator 81. Therefore, even if the level data is not output from the external sound analyzing means 17, the amplitude of the low frequency signal output from the low frequency oscillator 81 is controlled by the multiplier 86 in accordance with the level data LA.

The multipliers 87 and 88 provide the pitch data PID
And level data, and input them to the external pitch coefficient P.
The output is variably controlled in accordance with the magnitudes of S and LS and output to the adder 91. The external sound pitch coefficients PS and LS are values that determine the amplification ratio of the pitch data PID and the level data output from the external sound analyzing means 17. Multiplier 89 receives touch data TD and converts it into touch signal coefficient TS
Is variably controlled in accordance with the magnitude of.
The touch signal coefficient TS is a value that determines the amplification ratio of the touch data TD output from the performance operation detecting means 11.

The multiplier 90 receives the manipulated variable signal MD, variably controls this according to the magnitude of the manipulated variable signal coefficient MS, and outputs it to the adder 91. The operation amount signal coefficient MS is a value that determines the amplification ratio of the operation amount signal MD output from the operation element detection means 13. The adder 91 includes multipliers 87 to 90,
The sum of the signals from the parameter generator 14 and the multiplier 86 is output to the pan setting coefficient memory 32. The pan setting coefficient memory 32 outputs a pan setting coefficient according to the output of the adder 91. Any of FIGS. 3 to 6 may be used for the processing after the pan setting coefficient memory 32.

As described above, the parameter data MS, TS, LS, P output from the parameter generation means 14
By changing the sizes of S, LLS, and LFS, the rate of change in the pan setting information can be determined. Also,
The reference value of the pan setting information can be determined by changing the size of the parameter data PAN, LA, LF. In the above-described embodiment, the sound of the performer has been described as an example of the external sound. However, the present invention is not limited to this.
Various instrument sounds, tone signals generated by the tone signal generating means, and the like may be analyzed by the external sound analyzing means. In the above embodiment, the case where the sound image localization control device is applied to an electronic musical instrument has been described. However, it is needless to say that the sound image localization control device can be applied to other audio equipment (such as a karaoke device, a stereo device, and a TV device).

In the embodiment of FIG. 2, the case of four channels has been described, but the number of channels may be more or less. In the above-described embodiment, the case where the pan setting coefficient memory and the delay setting coefficient memory are read has been described. While inputting voice, etc., when appropriate localization is obtained, pitch data, level data, formant data, etc. of the voice, etc. are stored, and a correspondence table between voice and localization is created, and the table is used. You may make it.

In the embodiment shown in FIG. 8, a system for directly controlling the pan setting coefficient memory with the pitch data and level data of the external sound analysis means and a system for controlling the low frequency oscillator with the pitch data and level data of the external sound analysis means. However, either system may be used. In addition, although the case where the periodic waveform for changing the localization is generated by the low-frequency oscillator has been described, other general means for generating a time-varying function output, for example, the generation speed of the function waveform of an envelope generator or the like, The amplitude and the like may be controlled. Furthermore, the case where the localization is controlled using the pitch data and the level data of the external sound analysis means has been described, but other elements relating to the musical sound and the sound field may be controlled. The external sound analyzing means of FIG. 2 may be applied to FIG. 8, or the external sound analyzing means of FIG. 8 may be applied to FIG. Further, the pan setting information generating means of FIG. 8 may be applied to the pan setting information generating means of FIGS. 3 and 4, or may be applied to the delay setting coefficient generating means of FIGS. 5 and 6.

[0041]

As described above, according to the present invention, the sound image localization can be variably controlled in real time in accordance with the sound signal generated by the operator. without simply so that it is possible to freely control the sound image localization by a simple operation of merely generating a sound signal and an excellent effect that
Both simply generate a sound signal and input it to the external sound input means
With a few simple operations, features that exhibit multiple different properties
Data, which can be used for multiple different sound localization systems.
Control factors can be controlled all at once, and multiple
Complex sound image localization by controlling different sound image localization control factors
Control that can be easily realized.
The effect is excellent .

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a musical sound localization control device according to the present invention.

FIG. 2 is a diagram illustrating a detailed configuration of an external sound analysis unit in FIG. 1;

FIG. 3 is a diagram showing a detailed configuration of an embodiment of a localization control coefficient generation unit and a localization control unit of FIG. 1 according to a volume localization control method.

FIG. 4 is a diagram illustrating a detailed configuration of another embodiment of the localization control coefficient generation unit and the localization control unit of FIG. 1 according to the volume localization control method.

5 is a diagram showing a detailed configuration of an embodiment of a localization control coefficient generation unit and a localization control unit of FIG. 1 according to a delay time localization control method.

FIG. 6 is a diagram showing a detailed configuration of another embodiment of the localization control coefficient generation unit and the localization control unit of FIG. 1 according to the delay time localization control method.

FIG. 7 is a diagram showing an embodiment of the localization control coefficient generating means and the localization control means of FIG. 1 configured by combining the embodiments of FIGS. 4 and 6;

FIG. 8 is a diagram showing another embodiment of the localization control coefficient generator of FIG. 1;

[Explanation of symbols]

17 ... external sound analysis means, 18 ... localization control coefficient generation means,
19: Localization control means, PID: pitch data, LD: level data, PFD: formant center frequency data,
PLD: Formant level data

Claims (2)

(57) [Claims] An external sound input means for inputting 1. A sound signal generated by the operator to analyze the sound signal inputted from the external sound input unit, for a plurality of different properties of the sound, the characteristics indicative of the nature Analysis means for extracting and outputting data, and localization corresponding to a plurality of different control factors related to sound image localization.
It can generate each control coefficient.
In accordance with the characteristic data indicating the plurality of different properties.
It localization control coefficients corresponding to a plurality of different control elements
Is a localization control coefficient generating means for generating, inputs a sound signal to be sound localization control, the generated from the localization control coefficient generator with respect to the sound signal
A sound image localization control device for performing sound image localization control according to a localization control coefficient corresponding to a plurality of different control factors . 2. The sound image localization control device according to claim 1, wherein the localization control means inputs a sound signal input from the external sound input means as a sound signal to be subjected to the sound image localization control.