JP2002058100A - Fixed position controller of acoustic image and medium recorded with fixed position control program of acoustic image - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixed position controller of acoustic image in which distribution or movement of fixed position data can be set freely. SOLUTION: A plurality of fixed position data are stored at fixed position data storing sections 7, 8. Every time when a control timing designation signal is inputted, a fixed position data selecting section 4 selects the plurality of fixed position data in a specified order and outputs selected data to a sound volume ratio control section 1 through a fixed position data altering section 3. A plurality of kinds of order designation data are stored at an order designation data storing section 6 and a specified order is set by selecting one of them. Alternatively, a specified order is set based on a random number outputted from a random number generating section 9.

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 signals such as a musical sound signal and a sound signal emitted from a stereo speaker or the like, and a recording medium on which a sound image localization control program is recorded. is there.

[0002]

2. Description of the Related Art In an electronic musical instrument, the sound image localization means that the sounding position of a tone signal is sensed by a tone signal emitted from left and right speakers or headphones.
The sound image localization of the tone signal is realized by controlling the volume level ratio of the left and right channels and the like. Conventionally, the user
In some cases, one set of localization position data is set, and a range of localization data that can be taken as a function of the localization position data and a random number is set for each key-on. The tone image signal is controlled for sound image localization in accordance with the above-described localization data at each key-on. However, there is a problem that the user cannot freely control the distribution of the sound image localization and the movement of the sound image localization. In addition, since the above-described localization data has randomness within a limited range, a possible range is clearly bounded. As a result, there is a problem that the sound image localization is too sharp while having randomness.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a sound image localization control device and a sound image localization control program in which the distribution and movement of sound image localization can be freely set. It is an object of the present invention to provide a recording medium. It is another object of the present invention to provide a sound image localization control device and a recording medium in which a sound image localization control program is recorded without excessively sharpening the sound image localization.

[0004]

According to the present invention, in the first aspect of the present invention, in the sound image localization control device, the sound image localization based on a plurality of channels of signals output in response to an input signal is converted into localization position data. Localization control means for controlling the localization position data, a storage means for storing a plurality of the localization position data, and selecting the localization position data stored in the storage means in a predetermined order each time a control timing instruction signal is inputted. And a localization position selecting means for outputting to the localization control means. Therefore, by arbitrarily selecting a plurality of localization position data to be stored in the storage means, the distribution of the localization position data can be freely controlled.

[0005] The number and data intervals of the localization position data stored in the storage means are arbitrary, and the same localization position data may be redundantly stored a plurality of times. If the above-mentioned predetermined order is based on the arrangement position of a plurality of localization position data, the sound image localization can be varied in various ways based on the arrangement position of the localization position data. As the predetermined order, for example, one from the left, from the right, or from the center can be selected. Further, if the above-described predetermined order is based on random numbers, the sound image localization can be changed independently of the arrangement position of the localization position data. By providing the localization position data input means for sequentially inputting the localization position data and storing the data in the storage means, the user can arbitrarily set the localization position data. At this time, the above-mentioned predetermined order may be made to coincide with the input order of a plurality of localization position data. The localization position data selecting means may output the values of the selected plural localization position data to the localization control means after arbitrarily offsetting the values.

The localization position data selecting means arbitrarily compresses or expands the deviation of the selected plural localization position data centered on at least one set reference position data, and then controls the localization control means. May be output. Furthermore, a selection probability distribution specifying means for specifying a selection probability distribution of a plurality of localization position data, and a plurality of localization position data having an existence number distribution according to the specified selection probability distribution, and generating the plurality of localization position data, With the provision of the localization position data generating means for storing, it is possible to easily set the selection probability distribution of a plurality of localization position data.

According to a second aspect of the present invention, in the sound image localization control apparatus according to the first aspect, the storage means stores a plurality of types of order designation data.
The localization position selection means selects one of the plurality of types of order specification data stored in the storage means, and sets the predetermined order based on the selected order specification data. Therefore, the sound image localization can be varied in various ways. Since the order designation data is stored in advance, it is not necessary to calculate the order of the localization position data after controlling the sound image localization position, so that high-speed control can be performed.

According to a third aspect of the present invention, there is provided a sound image localization control device for controlling sound image localization based on signals of a plurality of channels output in response to an input signal in accordance with localization position data, comprising a control timing instruction signal. Is input, one of the plurality of localization position data is
And a localization position selecting means for selecting the localization position data with a selection probability having a spread that maximizes the selection probability and outputting the selected localization data to the localization control means. Therefore, since the selection probabilities of the localization position data before and after the localization position data at which the selection probability becomes the maximum gradually decrease from the selection probability at which the localization position data becomes the maximum, a clear boundary for selecting the localization position data does not appear. As a result, it is possible to realize sound image localization control with no sharpness.

The number of localization position data is arbitrary, and may not necessarily be arranged at equal intervals.
The selection probability distribution may be a binomial distribution or a normal distribution. As a more specific configuration, there is provided storage means for storing a plurality of localization position data having a spread where the number of at least one localization position is maximized. Each time a signal is input, one of the localization position data stored in the storage means is read.
One can be realized by selecting one with a uniform selection probability. The apparatus further includes storage means for storing a plurality of localization position data in which the number of existences is uniformly distributed. One of the data
This can be realized by selecting at least one localization position data with a selection probability having a spread that maximizes the selection probability.

[0010] The values of the selected plurality of localization position data may be arbitrarily offset and then output to the localization control means. In addition, specific localization position data in the distribution shape of the selection probability distribution, for example, localization position data at which the selection probability is maximum is used as a reference, and the spread of the distribution centered on this reference is arbitrarily compressed and expanded, and then the localization is performed. You may output to a control means. Furthermore, the offset may be inverted for each control timing instruction signal to move a plurality of localization position data and then output to the localization control means. Alternatively, the whole of the plurality of localization position data may be inverted left and right and then output to the localization control means.

According to a fourth aspect of the present invention, there is provided a recording medium on which a sound image localization control program is recorded, wherein the sound image localization control program executes sound image localization by a plurality of channels of signals output in response to an input signal. Localization control means for controlling according to the localization position data, and each time a control timing instruction signal is input, the localization position data is selected from a storage means in which a plurality of the localization position data are stored, selected in a predetermined order, and The computer functions as a localization position selection unit that outputs to the localization control unit. Therefore, the invention described in claim 1 can be realized by causing a computer to execute the above-described sound image localization control program.

According to a fifth aspect of the present invention, there is provided a recording medium on which a sound image localization control program is recorded, wherein the sound image localization control program performs sound image localization by a plurality of channel signals output in response to an input signal. Localization control means for controlling according to the localization position data, and each time a control timing instruction signal is inputted, one of the plurality of localization position data is expanded to maximize the selection probability of at least one of the localization position data. This is for causing a computer to function as a localization position selecting unit that selects with the selected selection probability and outputs it to the localization control unit. Therefore, by causing the computer to execute the above-described sound image localization control program, the invention described in claim 3 can be realized.

[0013]

FIG. 1 is a block diagram showing an embodiment of the present invention. In this embodiment, a plurality of localization position data are stored, and each time a control timing instruction signal is input, a plurality of stored localization position data are selected in a predetermined order, thereby providing a musical tone for performing localization control. This is a signal sound image localization control device. A plurality of types of order designation data are stored, one of them is selected, and a predetermined order is set. Alternatively, a predetermined order is set based on a random number.

The volume ratio control unit 1 receives a tone signal and realizes sound image localization based on left and right two-channel signals output according to the tone signal by controlling the volume ratio according to localization position data. Two-channel output signals output by the volume ratio control unit 1 are amplified by the stereo amplifier 2 and output from the left and right speakers. It sounds as if the sound image of the generated tone signal is localized between the left and right speakers. The localization position of the sound image is determined according to the localization position data. However, the localization position data is merely a parameter for controlling the localization position, and the localization position data does not strictly specify the localization position of a sound image that can be heard as a tone signal being emitted.

The localization position data storage unit 7 is a RAM (Random Access Memory) for storing a plurality of localization position data.
It is. On the other hand, the localization position data storage section 8 stores a plurality of localization position data in a ROM (Read Only Memory).
It is. In any case, a plurality of the same localization position data may be redundantly stored. When the pan A mode is designated, the localization position data selection unit 4 selects the localization position data from the localization position data storage unit 7 in a predetermined order each time the sounding instruction signal is input, and the localization position data changing unit 3 Is output to the sound volume ratio control unit 1 via.

In the pan A mode, there are a plurality of selection types for designating a plurality of types of order of a plurality of localization position data. For example, there are an input order input to the localization position data storage unit 7, an order from the left, an order from the right, and an order from the center based on the arrangement position of the localization position data. Further, there is a selection type in which the order is randomly specified. The order designation data storage unit 6 is a RAM in which order designation data for designating an order for sequentially selecting a plurality of localization position data from the above-described localization position data storage unit 7 is stored. When the localization position data is written in accordance with the input order, it is not necessary to store the order designation data in the input order selection type. The random order is determined by a random number output from the random number generator 9.

On the other hand, the localization position data selecting section 4
When the mode is designated, every time the sounding instruction signal is input, the localization position data is selected from the localization position data storage unit 8 in the order according to the random number output by the random number generation unit 9, and the localization position data changing unit 3 is selected. Is output to the sound volume ratio control unit 1 via.

The above-mentioned sound generation instruction signal is typically a key-on (KON) signal. A key-on signal generated by operating the keyboard of an electronic musical instrument, a key-on signal in song data (song data) reproduced from a built-in storage device at the time of an automatic performance, or performance data transferred from an external device. The included key-on signal may be used. This key-on signal is also input to a sound source unit (not shown), and the sound source unit generates a tone signal and outputs it to the volume ratio control unit 1. The required processing time from the input of the key-on signal to the generation of the tone signal may not be negligible.
In this case, the localization position data selecting unit 4 and the localization position data changing unit 3 adjust the timing of outputting the localization position data to the volume ratio control unit 1 so as to synchronize with the generation timing of the tone signal generated by the sound source unit. Thus, the volume ratio control unit 1 may control the sound image localization.

The localization position data changing unit 3 outputs the localization position data output from the localization position data selection unit 4 to the volume ratio control unit 1 as it is, or outputs it to the volume ratio control unit 1 after changing it. . For example, set by an operator
The value of the input localization position data is shifted according to the offset setting data of the localization position data, and the localization centering on the reference position data is set according to the spread degree setting data of the localization position data set by the operator. Change the spread of location data.

Offset setting data of the localization position data,
Further, the spread degree setting data of the localization position data can be set independently of the localization position data. However, it cannot exceed the left end position of the localization position data to the left or exceed the right end position to the right. Note that the offset setting data of the localization position may be changed for each sounding instruction. For example, in a specific example of a pan B mode described later, the polarity of the offset amount is inverted for each sounding instruction.

The localization position data input unit 5 inputs the localization position data by an operator, and the localization position data storage unit 7
Are written in sequence. Further, by reading the localization position data written in the localization position data storage unit 7 once and performing a plurality of types of rearrangement on the array of the localization position data, for example, rearranging from the right of the array,
The order designation data according to the selection type for designating the order of the respective localization position data is calculated, and this is stored in the order designation data storage unit 6.

In the above description, the volume ratio control unit 1 controls the sound image localization perceived by the auditory sense based on the volume level difference between the two left and right output channels. Alternatively or additionally, sound image localization may be controlled by a phase difference and a time difference between two output channels.
Furthermore, in a reverberation adding apparatus that inputs a musical sound signal output from a sound source section and adds a reverberant sound signal, the sound image localization is controlled by a volume difference, a phase difference, and a time difference between two output channels of the reverberant sound signal. Good. The number of output channels may exceed two, and by controlling the volume ratio of each output channel, the sound image can be moved and rotated in a two-dimensional or three-dimensional sound field space. .

FIG. 2 is an explanatory diagram summarizing various selection operations executed by the localization position data selection section 4 shown in FIG. In the figure, the same parts as those in FIG. First, the case of the pan A mode will be described. A plurality of types of rules for sequentially selecting a plurality of localization positions are prepared, and the order designation data corresponding to each rule is stored in the order designation data storage unit 6 except for the input order and the random case. The user reads out the order designation data according to the rule by designating the selection type.

In FIG. 2A, the localization position data stored in the localization position data storage section 7 is read out in the order of the addresses of the localization position data. When the localization position data is written, if the order of addresses to be written is determined according to the input order, the data is read according to the input order. After all the localization position data written in the localization position data storage unit 7 is read out in advance, the localization position data is rearranged in an order according to a desired rule for selecting a plurality of localization position data, and then the localization position data is again read. It may be written in the data storage unit 7. As a result, the localization position data storage unit 7
When reading from the, the localization position can be selected in a selection order according to a desired rule. After reading the last localization position data, the first localization position data is read again.

In FIG. 2B, the order designation data stored in the order designation data storage unit 6 is read, and the localization position data stored in the localization position data storage unit 7 is read in accordance with the order designation data. . After reading the last localization position data, the first localization position data is read again. In FIG. 2C, the localization position data stored in the localization position data storage unit 7 is read according to the random number output from the random number generation unit 9. As the random number generation unit 9, a unit that generates a uniform random number with a uniform distribution of occurrence probabilities is used. For example, M (Maximum length
shift register) using a sequence code generator. In this case, the plurality of localization position data are randomly selected.

Next, the case of the pan B mode will be described. FIG. 2D is essentially the same as FIG. 2C, but is characterized by the distribution of the number of localized position data stored in the localized position data storage unit 8. When the localization position data stored in the localization position data storage unit 8 is read at random according to the value of the uniform random number output from the random number generation unit 9, the presence of the localization position data stored in the localization position data storage unit 8 The localization position data can be read out with the selection probability according to the number distribution. For example, the localization position data storage unit 8 stores the localization position data having the number of existences and having a spread that maximizes the number of at least one localization position data. Therefore, the number gradually decreases before and after the localization position data at which the number becomes maximum.
As a result, the localization position data can be selected and read with the selection probability having a spread that maximizes the selection probability of at least one localization position data. Before and after the localization position data having the maximum number, the selection probability also gradually decreases.

When the random number generator 9 outputs a non-uniform random number, the localization position data selection probability distribution can be set according to the random number generation probability distribution. For example, even when the number of the plurality of localization position data stored in the localization position data storage unit 8 follows a uniform distribution, when the random number generation unit 9 outputs a normally distributed random number (normal random number), The localization position data can be selected by the selection probability distribution according to the normal distribution. Normal random numbers are
It can be obtained by various calculations. For example, it is known that it can be obtained by adding a plurality of uniformly distributed random numbers. In addition, a random number that is not uniformly distributed is generally obtained by reading out a memory that stores data in which the number of existences is not uniformly distributed, using random numbers that are uniformly distributed.

FIG. 2E shows a modification in which the localization position data storage section 8 is not required. The localization position data is output according to the output of the random number generation unit 9. However, it is necessary to associate the output value of the random number generator 9 with the value of the localization position data. The random number generator 9 can use not only a uniform random number but also a random number having an arbitrary probability distribution such as a normal random number. In FIG. 2 (f), a large number of localization position data selected in accordance with a desired selection probability distribution are obtained using the same configuration as in FIGS. 2 (d) and 2 (e). Is stored in the localization position data storage unit 8 in advance. Although the storage capacity will increase,
Since the localization position data selection unit 4 only needs to advance the address, the selection process is simplified.

The localization position data selection section 4 can perform various selection operations in addition to the above description. For example, in FIG. 2B, a random number sequence can be stored in the order designation data storage unit 6. In FIG. 2C, the random number can be replaced with something other than a uniform random number, such as a normal random number. In FIG. 2D, the random number generation unit 9 is replaced with an order designation data storage unit 6, so that a localization having a unique existence number distribution is performed in an order according to a rule for sequentially selecting a plurality of localization position data. Position data can be selected. In the above description, one of the localization position data storage unit 7 which is a RAM and the localization position data storage unit 8 which is a ROM is selected in correspondence with the pan mode. However, the only difference between the RAM and the ROM is whether or not the user can easily write the localization value data.
OM, and the localization position data storage unit 8 may be a RAM.

Next, the operation in the pan A mode will be specifically described with reference to FIGS. FIG. 3 is an explanatory diagram of the localization position data. FIG. 3A shows the arrangement of the localization position data displayed on the display unit, and FIG. 3B shows the order of the localization position data. As shown in FIG. 3A, the localization position data takes a value in the range of 0 to 127. The value corresponding to the leftmost position is 0, the value corresponding to the rightmost position is 127, and the value corresponding to the center position is 64. Display 16
, The localization position data is displayed in a bar shape on the horizontal coordinate along with the localization position numbers 1 to 4. The user sequentially inputs the arbitrary total number m, for example, four, of the localization position data P (1), P (2), P (3), P (4) in this order. The value in parentheses is the localization position number, which specifies the localization position data. In the illustrated example, the input order is used as the localization position number.
The same localization position data may be input in duplicate. P (1)
= 50, P (2) = 100, P (3) = 70, and P (4) = 55.

As shown in FIG. 3B, five types are prepared as selection types. The “input order” is a type in which the localization position data is selected in the order in which the localization position data is input. The localization position data is written according to the input order. Therefore, the localization position data P
(1), P (2), P (3), P (4) can be selected in this order and read out repeatedly. When AR (R) (arrange right) is selected, localization position data is preferentially selected from the rightmost end in the array of localization position data. That is, reading is repeatedly performed in the order of P (3), P (2), P (4), and P (1). When AR (L) (arrange left) is selected, localization position data is preferentially selected from the leftmost side. That is, reading is repeatedly performed in the order of P (1), P (4), P (2), and P (3). When AR (C) (arranged center) is selected, the localization position data is preferentially selected from those having a small absolute value of the deviation from the median (64). That is, reading is repeatedly performed in the order of P (2), P (4), P (1), and P (3). When RND (random) is selected,
Regardless of the input order or the arrangement order of the localization position data, the localization position data is read according to the random number output from the random number generation unit 9.

In addition, the localization position data can be preferentially selected from those having a larger absolute value of the deviation from the median (64) by inverting AR (C) (arrangement center). AR (R) (arrange right), AR (L) (arrange left),
In the AR (C) (arrangement center) or the like, it is possible to select the localization position data discretely, such as selecting the odd number first, and then selecting the even number. Thus, various kinds of selection order are possible even in the order according to the arrangement.

FIG. 4 shows a case where the localization position data storage unit 7 and the order designation data storage unit 6 are combined into one, and is an explanatory diagram of an example of data arrangement in the storage unit. FIG. 4A is an explanatory diagram of the data arrangement of the stored localization position data.
FIG. 4B is an explanatory diagram of stored specific data. First, the total number m of input localization position data is stored,
Next, the localization position data P (1) to P (m) are stored. Next, AR (R) (arrange right) order designation data, AR (L)
(Arrangement left) order designation data and AR (C) (arrangement center) order designation data are stored. AR (R) and AR
Since the order is opposite to that of (L), only one of the order designation data may be stored.

As shown in FIG. 4B, at address 0,
The total number of localization position data m = 4 is stored. Addresses 1 to 4 have localization position data, P (1) = 50, P (2) = 7
0, P (3) = 100 and P (4) = 55 are stored. When the selection type is AR (R), the order designation data stored at addresses 5 to 8, that is, the localization position numbers sequentially
3, 2, 4 and 1 are read out and the corresponding localization position data P
(3), P (2), P (4), and P (1) are stored. Data 100, 70, 55, and 50 of addresses 3, 2, 4, and 1 are read in this order. In the illustrated example, the localization position numbers, which are also input orders, are rearranged in accordance with the selected predetermined order, and are sequentially written. Instead of this, it is also possible to sequentially assign addresses to write the order to the localization position data and write the order to each address to obtain the order designation data. In the above description, only one set of a plurality of localization position data is shown. However, a plurality of sets are stored in the localization position data memory 7 so that the user can select one set from the set. You may.

FIG. 5 is an explanatory diagram of a specific example of the localization position data in the pan A mode, where the selection type is AR (R).
(Arrange right) is shown. In the figure, 11 is an electronic musical instrument main body, 12 is an operation panel, 13 is a keyboard, 14 is a left speaker, 15 is an operation unit, 16 is a display unit, and 17 is a right speaker. The electronic musical instrument body 11 includes left and right speakers 14,
15 The operation panel 12 is provided with an operation unit 15 including a plurality of operations and a display unit 16. The display unit 16 displays a setting state of the localization position data by the operation unit 15 and a setting state of various tone parameters. The electronic musical instrument body 11 has a MIDI (Musical Instrum).
ent Digital Interface) terminal so that it can be connected to MIDI equipment such as an external keyboard or sequencer. Further, a pedal, a pitch bend wheel, a modulation wheel, and the like may be provided.

The operation of the block configuration diagram of FIG. 1 in the pan A mode will be described with reference to FIG. The localization control of the sound image is performed by controlling the output volume level ratio of the L channel and the R channel for driving the left speaker 14 and the right speaker 17. As described above, the localization position data is 0 to 127, where 0 corresponds to the leftmost end, 127 corresponds to the rightmost end, and 64 corresponds to the center. However, the localization position data is a parameter for controlling the localization position, and although it has a correspondence with the localization position of the sound image that can be heard that the tone signal is being generated, it does not exactly match.

When the localization position data is x, the volume level ratio of the L channel and the R channel is determined, for example, as follows. L channel volume level ratio = 1-x / 128 R channel volume level ratio = x / 128 Here, the sum of the L channel volume level ratio and the R channel volume level ratio is set to 1. ing. When the localization position data is 64, the volume ratios of the left and right channels are both と も に. When the localization position data x = 0, the volume ratio of the left channel is 1, and the volume ratio of the right channel is 0. When the localization position data x = 127, the volume ratio of the left channel is 1/128, and the volume ratio of the right channel is 127/128.

The volume level ratio is not limited to the above equation. When the center position is x = 63.5, the volume level ratio of the L channel = 1-x / 127 The volume level ratio of the R channel = x / 127. Further, the sum of the squares of the respective volume levels may be set to 1 by taking the square root of the volume level ratio in each of the above equations as the volume level ratio of the L channel and the R channel.

One of the localization position data P (1) to P (4) is output from the localization position data selecting unit 4 to the localization position data changing unit 3 for each sounding instruction in a predetermined order. In the localization position data changing unit 3, the user sets an offset using an operation element, and sets the localization position data P (1).
The entire sequence of ~ P (4) can be moved. In the illustrated example, the offset value is “−19”. As a result, the reference position of the localization position data is changed from the initial value “64” to “45”.
Go to In the figure, a bar-shaped display with a circled number indicates a temporal change of the localization position data of the musical tone to be generated. One bar schematically shows a sound generation period from key-on to mute. The pronunciation period is not fixed. The time progress direction is the upward direction in the figure. Each time the sounding instruction signal is input to the localization position data selection unit 4, the localization position data P (1) to P (4) are offset in the order specified by AR (R) (arrange right). , The localization position data moves in the order of the numbers with circled numbers in the figure.

After the offset is set, if the localization position data has a negative value, it is fixed to 0, and if it exceeds 127, it is fixed to 127. Alternatively, the next localization position data is selected without using the excess localization position data. In addition, the localization position data may be a value obtained by adding 127 to a negative value, or the value itself may be exceeded, and the localization position data may be wrapped around in the opposite direction. The localization position data changing unit 3 converts the localization position data into reference position data (initial value “64” in the illustrated example, and “45” when there is an offset) based on the localization position data spread degree setting data set by the operator. )) Can be used to compress or expand the spread of the localization position data.
That is, the deviation of the localization position data P (1) to P (4) from the reference position data is compressed or expanded according to the degree of spread. The initial value of the reference position data described above may be set to an arbitrary value instead of the median value “64”. The deviation from the set initial reference position data or the reference position data after offset is compressed or expanded.

In the above description, the selection type is AR (R)
(Arrange right) has been described. For other selection types, only the order by the localization position data selection unit 4 changes. As can be understood from the above description, in the pan A mode, the user can select an arbitrary number of localization position data, a movement type of a plurality of types of localization position data,
It is possible to set the reference position data and the degree of spread around the reference position data.

Next, the operation in the pan B mode will be specifically described with reference to FIGS. FIG. 6 is an explanatory diagram of the localization position data stored in the localization position data storage unit 8.
FIG. 6A is an explanatory diagram of specific data stored in the localization position data storage unit 8, and FIG. 6B is an explanatory diagram of an existing number distribution of the localization position data stored in the localization position data storage unit 8. FIG. 6C is an explanatory diagram of the selection probability distribution of the localization position data converted by the localization position data changing unit 3. An example of the data arrangement of the localization position data in the localization position data storage unit 8 is the same as that of the localization position data storage unit 7 shown in FIG. At address 0, the total number of localization position data m = 256 is stored. Addresses 1 to 256 store localization position data P (1), P (2),..., P (256).

More specifically, the range of 0 to 127 is defined as n =
Divide into 8 and n + 1 = 9 points, 0, 16, 32, 48, 64, 80, 96, 1
12, 127 are the localization position data. Since the left end is 0, the center is 64, and the right end is 127, it is almost equally divided, but 0 and
The difference from 16 is larger by 1 and the difference between 112 and 127 is shorter by 1. The localization position data is stored in a manner that allows duplication according to the arrangement order from the leftmost end. In the illustrated example, the number of existing localization position data is binomial distribution [ _n
C _k p ^k (1−p) ^{n− k} : n = 8, p = 11], and the total number (m) of the localization position data so that the left end 0 and the right end 127 are one. Have decided. That is, among the stored 256 localization position data, the localization position data “0”
Is 1, the localization position data "16" is 8, the localization position data "32" is 28, the localization position data "48" is 56, the localization position data "64" is 70, the localization position data "80" Is 56, the localization position data "96" is 28, the localization position data "112" is 8
And the localization position data “127” is one. Therefore, a plurality of localization position data having a spread with the number of the localization position data “64” being the maximum is stored. Here, if the number of divisions (n) of the entire range of the localization position data is increased, the distribution approaches a normal distribution.

In FIG. 6B, the black square points connected by solid lines indicate the ratio of the number of the localization position data. The localization position data selection unit 4 shown in FIG. 1 randomly selects addresses 1 to 256 of the localization position data storage unit 8 based on the uniform random numbers output by the random number generation unit 9. As a result, the above-mentioned nine localization position data are selected by the selection probability distribution according to the distribution of the number of binomial distributions. As shown in FIG. 6C, the above-mentioned nine localization position data is offset (“−24” in the illustrated example) by the localization position data changing unit 3 in accordance with the offset setting data of the localization position data. And compresses or expands the deviation centered on the offset reference position "40" according to the spread degree setting data of the localization position (in the example shown, the spread degree is 0.7, resulting in compression). . As a result, the localization position data is rounded off to -5 (not used because it is negative), 6, 18, 29, 40, 51, 62, 74, 85
Becomes A large number of localization position data according to the binomial distribution may be stored in a sufficiently wide range beyond the left end “0” and the right end “127” and by increasing the number of divisions (n). In this way, even when the spread is compressed, the leftmost "0",
At least one localization position data at the right end “127” or in the vicinity thereof can be present.

Although the localization position data is randomly selected by the uniform random number output from the random number generator 9, there is naturally a probability that the same localization position data will be continuously selected. At this time, it may be felt that the localization of the sound image of the tone signal is too concentrated at one point. Therefore, FIG.
As shown by the white circles, the localization position data changing unit 3
The polarity of the offset value may be reversed left and right for each sound of the sounding instruction. That is, the polarity of the offset is switched between normal and reverse. In the illustrated example, “−24” and “+24” are used alternately as offset values. Instead of this, the localization position data itself may be reversed left and right instead of the offset value.

In the above description, the localization position data changing unit 3 changes the value of the localization position data. However, the localization position data output by the localization position data selection unit 4 may be output to the volume ratio control unit 1 as it is. Good. 6A stored in the localization position data storage unit 8, similarly to the case of the localization position data storage unit 7, arranged in an arrangement such as arrangement right, arrangement left, arrangement center. You may make it read in the order which followed.
In this case, the same localization position data is successively selected by the number of times corresponding to the number of existing locations, in accordance with the order. Like the order designation data storage unit 6, the order designation data is stored in the ROM. In the above description, the number (n + 1) of the localization position data is set to nine. But 0
Since there are 128 points of ~ 127, any number may be used as long as it is 128 points or less.

FIG. 7 is an explanatory diagram of a specific example of the localization position data in the pan B mode. The same components as those in FIG. The selection probability distribution is schematically illustrated. The offset is “−24”, and the spread around the reference position data “40” is compressed. The number (n + 1) and the total number (m) of the localization position data are assumed to be sufficiently large, and follow the normal distribution as a whole.
The small selection probability may be rounded to 0, and only the localization position data near the reference position having the maximum value may be selected. Alternatively, even at 0 and 127 at the base of the selection probability distribution, a small selection probability is left. It can also be kept. Each time the sounding instruction signal is input to the localization position data selecting unit 4, the localization position data having the selection probability of the normal distribution is selected by the localization position data changed by the localization position data changing unit 3. . As a result, the localization position data moves in the order of numbers with circled numbers in the figure.

FIG. 8 is an explanatory diagram of another distribution of the number of localization position data stored in the localization position data storage unit 8. Examples of presence number distribution of localization position data shown in Figure 6, the binomial distribution ^{_{[n C k p k (1}} -p) nk], p = 1/2
The distribution was symmetrical with the spread having an average value np = 4 as the maximum value. On the other hand, if the value of p (0 <p <1) is made different, it can be made asymmetrical with respect to the maximum value. FIG. 8 shows a specific example in which p = 0.05, 0.1, 0.25, and 0.5. When the number n of the localization position data is increased, the distribution approaches a normal distribution of the average value np and the standard deviation (np (1-p)) ^1/2 . Therefore, if a plurality of sets of localization position data sets having probability distributions with different values of p are stored in the localization position data storage unit 8, one of them is selected, and the localization position data changing unit 3 selects one of them. In particular, it is possible to move the localization position data at which the selection probability becomes the maximum point without giving an offset.

FIG. 9 is an explanatory diagram in the case where the selection probability distribution of the localization position data is arbitrarily set. This shows a special method for inputting the localization position data to the localization position data storage unit 7, and the selection probability distribution is displayed on the display unit 16. However, the selection probability to be set does not necessarily need to be the sum of 1, and may be divided by the sum of the selection probabilities after the setting. The selection probability distribution is displayed on the display unit 16 by operating a pointer position designation key such as an arrow key in the operation unit 15.
Make settings while displaying on. For example, with the pointer position specification key, specify multiple points on the coordinates of the display screen,
A distribution connecting these points is set. The selection probability of each localization position data is set according to the value of the vertical axis coordinates in the horizontal axis localization position data. The localization position data input unit 5 stores the respective localization position data in the localization position data storage unit 6 by the number corresponding to the determined selection probability distribution. Note that the number (n + 1) of the localization position data may be set by the operator.

In the above description, the number (n + 1) of a plurality of localization position data is set first, and then the number distribution of each localization position data is set. Alternatively, the same localization position data may not be allowed to overlap. In this case, in a plurality of localization position data, the density distribution of the number of existences may be set by changing the interval between adjacent localization position data.

For example, by selecting, with uniform probability, localization position data having a spread in which the density distribution of the number of existences maximizes the density of the number of existences in the vicinity of at least one of the localization position data, the probability distribution becomes at least one. One of a plurality of localization position data can be selected with a selection probability density having a spread that maximizes the selection probability density near one of the localization position data. Therefore, in regions before and after the region where the selection probability density is maximum, since the selection probability density gradually decreases from the selection probability density where the selection probability density is maximum, a clear boundary for selecting the localization position data does not appear. As a result, it is possible to realize sound image localization control with no sharpness.

This concludes the description of the specific operation of selecting the localization position data in the pan A mode and the pan B mode. Hereinafter, a description will be given of a flowchart showing a hardware configuration for realizing the embodiment of the present invention and a flow of processing executed by the CPU.

FIG. 10 is a hardware configuration diagram for realizing one embodiment of the present invention. In the figure, the same parts as those in FIG. 21 is a bus, 22 is a CPU (Central Processing Unit), 23
Is a RAM (Random Access Memory) and 24 is a ROM (Re
ad Only Memory), 25 is a microphone, 26 is AD
C (Analogue-Digital Converter), 27 is an external storage device, 28 is an interface, 29 is a sound source, 30 is DS
P (Digital Signal Processor), 31 is DAC (Digi
tal-Analogue Converter), 32 is a sound system.

A plurality of hardware such as a CPU 22 are connected to the bus 21. The operation unit 15 includes the localization position data, the pan mode, and the panning mode as described with reference to FIG.
In addition to inputting the selection type, the offset of the localization position data, the degree of spread of the localization position data, and the like, the user sets tone parameters such as a tone color and an envelope, which are performed by a conventional electronic musical instrument. The display unit 16 displays the above-described localization position data, musical tone parameters, and the like set by the respective operators. The ROM 24 stores a general control program which is executed by using the CPU 22 and controls the operation unit 15 and the display unit 16 and the like, and a sound image localization control program. Further, data such as preset localization position data, coefficient data of the random number generation section 9, and musical tone parameters are also stored. The RAM 23 is provided with a working area for the CPU 22, an editing buffer, and the like, and also stores localization position data and order designation data input by the user.

The external storage device 27 includes a flexible magnetic disk drive (FDD), a hard magnetic disk drive (HDD), a magneto-optical disk (MO), and a CD-ROM.
(Compact Disk-Read Only Memory), Audio C
D, DVD (Digital Versatile Disk) drive and the like. The recording medium of the external storage device 27 stores music data, sound source waveform data of a waveform memory sound source, general audio signals, and the like. A sound image localization control program may be installed, loaded into the RAM 23, and executed. It should be noted that the processed input voice signal, musical tone signal, or a composite signal thereof is stored in the external storage device 27.
You may make it possible to save it.

The interface 28 communicates with an external keyboard, sequencer, and personal computer by MI
An interface for transferring DI data and the like. AD
C26 is an interface that converts an input audio signal from the microphone 25 into a digital signal and outputs the digital signal to the bus 26. The tone generator 29 generates musical sound signals by inputting performance information such as key-on signals and musical sound parameters from the bus 21, and outputs them to the DSP 30.

The DSP 30 performs signal processing under the control of the CPU 22. Various effects such as adding a reverberant sound signal to the musical sound signal generated by the sound source section 29 and the sound signal input from the microphone 25 through the bus 21 and performing a pitch conversion to generate a harmony sound signal. Is given. Note that the function of the DSP 30 is divided into
For an input audio signal output from the DC 26, a second DSP (not shown) is provided and input to the second DSP.
Here, the process of pitch detection and pitch conversion of the input audio signal may be performed and directly output to the DAC 31. The DAC 31 is an A / D converter that converts the output of the DSP 30 into an analog signal, and outputs the analog signal to the left speaker 14 and the right speaker 17 via the sound system 32.

The CPU 22 processes the input audio signal from the microphone 25 and the external storage device 27 and the performance information input via the keyboard operator 13 and the interface 28 by using the operation information from the operator unit 15. Do.
The values of various setting parameters are displayed on the display unit 16, and based on performance information and operation information, the sound source unit 29, the DSP 30,
The AC 31 controls the sound system 32. The function of the block configuration shown in FIG.
3, using the ROM 24, the DSP 30, the DAC 31,
This is realized by controlling the sound system 32. The function of the volume ratio control unit 1 shown in FIG. 1 can be realized by controlling the gain in the DSP 30 or the DAC 31 in the stage of the digital signal, and in the sound system 32 in the stage of the analog signal.

In FIG. 1, sound image localization control is performed only on a tone signal. However, the sound image localization control can be similarly performed on a tone signal, a voice signal, and the like input from the microphone 25 or the like. In this case, a key-on signal cannot be obtained. Therefore, the instruction signal that determines the timing of performing the sound image localization control on the input audio signal,
The user gives the instruction using the keyboard operator 13 or the operator of the operator unit 15. Alternatively, a signal in which a note break or the like is automatically detected from the input musical sound signal is replaced with the sounding instruction signal described above. Similarly, a signal in which a break in the sound is automatically detected from the sound signal is replaced with a sound generation instruction signal. Further, an instruction signal for determining the timing of performing the sound image localization control may be automatically generated at every predetermined time interval, and may be replaced with the sounding instruction signal. This predetermined time interval itself also depends on a predetermined time length pattern, according to a random time length pattern,
Alternatively, the time length according to a predetermined selection probability distribution,
It may be changed.

The above description has been made on the assumption that a dedicated electronic musical instrument is used. However, a personal computer having a sound card having the functions of the sound source 29, the DSP 30, the DAC 31, the sound system 32, or the DAC 31 is also used. And sound system 3
2, the software sound source program and the sound image localization control program are installed, and the sound source 29,
The present invention can be realized as long as the function of the DSP 30 is realized by the CPU 22. The sound image localization control program can be stored in the ROM 24 or the external storage device 27. The sound image localization control program can be installed on a hard magnetic disk from a CD-ROM in which the sound image localization control program is stored, or the sound image localization control program can be installed on the hard magnetic disk via a communication line.

FIGS. 11 to 13 are flowcharts for explaining the processing steps of the embodiment of the present invention. Figure 1
1 is a main flowchart. When the power is turned on, the apparatus is initialized in S41, and various parameters are initialized. In S42, it is detected whether or not the operation unit 15 on the operation panel 12 shown in FIG. 5 has been operated, and various operations are instructed or various operations are performed in accordance with the operated operation unit and its operation amount. Is set.
In S43, the operation of the keyboard operator 13 and performance operators such as pedals and modulation wheels (not shown) is detected, and the performance operation information is created based on the various parameter setting states set in S42.

In S44, a tone signal is generated by the sound source unit 29 shown in FIG. 10, and the volume ratio of the left channel and the right channel is determined by the DSP 30 or the sound system 32, and the sound image is localized from the left and right speakers 14 and 17. Emits a controlled tone signal. In S44,
The audio signal input from the microphone 25 or the like is also processed, and the volume ratio is similarly determined to control sound image localization to emit sound. When the process of S44 ends, the process returns to S42 again,
S42 to S44 are repeatedly executed.

FIG. 12 is a flowchart for explaining the panel setting process in S42 shown in FIG. In S51, it is determined whether or not there is at least one operator input. If there is, the process proceeds to S52. If not, the process returns to the main flow of FIG. 11 and exits the panel setting process. In S52, first, it is determined whether or not there is an operation input for instructing the “pan A mode”.
The process proceeds to the “pan A mode” including steps S3 to S55, and if not, the process proceeds to step S54. In the “pan A mode”, as described with reference to FIGS. 3 to 5, the user sets and inputs a plurality of localization position data one by one, and issues a sounding instruction from among the plurality of localization position data. This is a mode in which one localization position data is selected every time to control sound image localization. In S53, A is input to the variable PAN, and the process proceeds to S55.

In step S55, while displaying the setting screen on the display unit 16, the total number (m) of the localization position data is set according to the input of the operation element. It is to be noted that the already stored localization position data can be used as it is without newly inputting, and when a plurality of sets of a plurality of localization position data can be stored, the setting is performed for each set. S5
At 6, each of the localization position data is set one by one according to the input of the operation element. The localization position data is sequentially inputted by the total number (m) set in S55 and set.
At this time, the input localization position data is displayed on the display screen of the display unit 16 as shown in FIG. The localization position data may be input by moving a bar-shaped display using arrow keys or the like while looking at the display screen. Figure 1
As described with reference to, when the input of the localization position data is completed, the order of AR (R) (arrange right), AR (L) (arrange left), AR (C) (arrange center) is calculated Then, it is stored in the order designation data memory 6.

In S57, the selection type (TYP) is set according to the input of the operation element. As the selection type (TYP), as described with reference to FIG. 3, the localization position data is localized in the “input order” in which the localization position data is input in S56 (TYP ← JUN), and the localization position data is selected in order from the right ( TYP ← AR (R)), select from left to right (TYP ← AR
(L)), selection in order from the center (TYP ← AR (C)), random selection (TYP ← RND), and the like. In S58, it is determined whether or not the operation element for determining the set value in S55 to S57 is operated, and when the operation for determining is performed, the process returns to the main flow and exits the panel setting process. If the operation for confirming has not been performed, the process returns to S55, and the operation input is received again.

In S54, it is determined whether or not there is an instruction to set the "pan B mode".
59, the process proceeds to the “pan B mode” including S61 to S64, and when there is no instruction, the process proceeds to S60.
The “pan B mode” has been described with reference to FIGS.
In this mode, sound image localization is controlled by sequentially designating one localization position data from a plurality of localization position data with a selection probability having a certain probability distribution. Presence number distribution of localization position data is in the initial state, for example, binomial described with reference to FIG. 6 distribution ^{_{[n C k p k (1}} -p) nk: n = 8, p = 1/2] and I do. In the reference position data “64”, the number becomes the maximum value.

In S59, B is input to the variable PAN, and
The process proceeds to 61. In S61, the offset (OFS) is set according to the input of the operation element while displaying the setting screen on the display unit 16. The offset is a moving amount of all the localization position data. According to the offset, the reference position data can also be moved between 0 and 127 from the initial value “64”.

In S62, the degree of spread (HIR) is set in accordance with the input of the operation element. As the degree of spread (HIR), the expansion rate of the deviation centered on the reference position data, which is the maximum position data of the binomial distribution described above, can be used. For example, the localization position data “68” having a deviation of “4” from the reference position “64” has a deviation of 4 × 0.5 when the expansion rate is 0.5.
= 2, and the localization position data is “66”. In the case of binomial distribution, the value of the standard deviation (np (1
-p)) You may use ^1/2 . Also, as shown in FIG.
If the maximum point position is not at the median value `` 64 '', the initial value of the reference position is set at the maximum point position instead of the median value, and the spread around the maximum point is compressed or compressed according to the degree of spread. Can be stretched.

In S63, the presence / absence of movement of each offset sounding instruction is set in accordance with the input of the operation element.
If "moved", the value A is input to the variable IDO, and if "no movement", the value N is input to the variable IDO. In S64, it is determined whether or not the operation element for determining the set values in S61 to S63 described above has been operated, and when the operation for determining has been performed, the process returns to the main flow and exits the panel setting processing. If the operation for fixing is not performed, the process returns to S61, and the operation input is received again.

In S60, it is determined whether or not there is an instruction to stop pan setting. If there is an instruction, the process proceeds to S65, and if not, the process proceeds to S67.
In S65, C is input to the variable PAN, and in S66, the localization position data is set to the median value (6
4), return to the main flow and exit the panel setting process. Here, the above-mentioned S55 to S57, S61 to S
Although the setting information set in 63 is deleted, it may be written in the RAM 23 for backup so that it can be reused. In S67, settings are made according to other instruction contents input from the operator, and the process returns to the main flow. Other instruction contents include tone color selection, other effect selection, automatic performance operation function selection, and the like.

FIG. 13 is a flowchart for explaining the performance operation information creation processing in S43 shown in FIG. S7
In step 1, by scanning a signal indicating the key-on / key-off operation of the keyboard operator, it is determined whether or not there is an event of the keyboard operator. If not, the process returns to the main flow, but if there is, the process proceeds to S72. . In S72,
It is determined whether or not there is a key-on event. If so, the process proceeds to S73; otherwise, the process proceeds to S74. In S73, the tone generator 29 generates a tone signal corresponding to key-on. In S75, it is determined whether or not the pan C mode (localization in the center) is set. If the pan C mode, the volume level of the tone signal is made equal between the left and right channels, and the process returns to the main flowchart. S
If it is not the pan C mode in 75, the process proceeds to S77. In S77, it is determined whether or not the pan B mode (one according to the selection probability distribution) is set,
If the pan B mode is set, the process proceeds to S78,
If not set, the process proceeds to S79.

In S78, the reference position "64" of the localization position data (KAK) in the pre-stored number distribution (corresponds to the maximum position in the binomial distribution of p = 1/2)
Is output as the position (ICH). In S80, the degree of spread (expansion rate) (HIR) is set at the position (ICH).
To change the position (ICH). In addition, the method of expansion and contraction is made different depending on the number distribution of existence. When there is one local maximum position, the deviation from the center is expanded or contracted around the local maximum position. When there are two or more local maximal positions, for example, the array of the localization position data is divided into a plurality of regions each including one local maximal position. Scale the deviation of In S81, in step S63 of the panel setting in FIG. 12, it is determined whether or not “there is an offset movement” (IDO = A) or not (IDO = N).
The process proceeds to S83 if not set.

In S82, the offset (OFS) set in S55 of FIG. 12 is, for example, horizontally inverted with respect to the center “64”. That is, OFS = 128−OFS.
OFS = 1 when reversing left and right with respect to true center 63.5
27-OFS. In S83, the localization position data (TE
I) is finally determined as the sum of the position (ICH) and the offset (OFS). When "offset movement" is set, the step of S82 is executed every time a sounding instruction is issued, so that the offset (OFS) becomes the left-right inverted localization position data (TEI) each time. As a result, the localization position data (TE
I) can be controlled in the direction of dispersion. In addition,
Instead of inverting only the offset, the localization position data (TEI) may be inverted (TEI = 128-TEI or TEI = 127-TEI) for each sounding instruction. In S84, the volume level ratio of the left and right channels is set so that the sound image is localized according to the localization position data (TEI), and the process returns to the main flow, and proceeds to the next tone signal generation processing.

If the pan mode is neither the pan B mode nor the pan C mode, the pan mode is the pan A mode, and the process proceeds to S79. Here, the selection type is random (TYP = RN
D) is determined, and if random, S
The process proceeds to S85, and if not random, the process proceeds to S86. In S85, a random number (random (m)) output from the random number generation unit 9 and randomly specifying one of the total number (m) of the localization position data is defined as a localization position number (NUM). Note that the value of the random number generated by the random number generation unit 9 is updated for each sounding instruction. Next, in S90, the localization position data (P (NU
M)) is read from the localization position data storage unit 8. This value is finally determined as the localization position data (TEI), the process proceeds to the already described S84, the volume level ratio of the left and right channels is set, and the process returns to the main flow.

If the pan B mode is not set in S79, the process proceeds to S86, and in S86, it is determined whether or not the selection type is “input order” (TYP = JUN). If there is, the process proceeds to S87. In S87, the localization position number (NUM) is incremented by +1. Note that the initial setting value of the localization position number NUM may be any value from 1 to n. In S88, it is determined whether or not the localization position number NUM has exceeded the total number (m) of the localization position data. If it has, the process proceeds directly to S90. After returning the position number NUM to 1, the process proceeds to S90.
If the selection type is not "input order" in S86, the process proceeds to S91, and the localization position number NUM stored in order in the order designation data storage unit 6 according to the other selection type is addressed to each sounding instruction. And read it out,
In S90, the localization position data (P (NUM)) is read from the localization position data storage unit 7, and this value is finally determined as the localization position data (TEI).

Returning to S74, the description will be continued. In S74, it is determined whether or not there is a key-off event. If there is a key-off event, the process proceeds to S92; otherwise, the process proceeds to S93. In S92, in response to the key-off event, the release process for stopping the sounding of the currently sounding tone signal is advanced, and the process returns to the main flow. On the other hand, in S93, a performance process corresponding to the operation input of various pedals such as a pitch bend wheel, a modulation wheel, and a damper pedal is executed, and the process returns to the main flow.

In the above description, the case where the sound image localization position of the tone signal generated by the sound source of the electronic musical instrument is mainly controlled has been described. However, it is also possible to control the sound image localization of the audio signal input from the microphone, the line, and the storage device irrespective of the tone signal. It is not limited to an electronic musical instrument as long as it has at least two-channel (stereo) speakers or a headphone output. In a karaoke apparatus or personal computer, a tone signal generated by a tone generator board or software tone generator, a tone signal and a voice signal reproduced from a wave format file, a tone signal or a voice signal stored on a hard magnetic disk, an audio CD, or the like. It is also possible to control the sound image localization of the music signal and the like.

[0078]

As apparent from the above description, the present invention has an effect that the localization of an input signal such as a tone signal or a voice signal can be freely controlled. As a result, the variety of performances and singing can be increased. In addition, the maximum point position can be specified, such as binomial distribution or normal distribution.
Since it is possible to select the localization position data with a selection probability distribution having a spread, there is an effect that a sound image localization distribution in which a clear boundary does not appear can be obtained. As a result, natural sound image localization without excessive sharpness can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram summarizing various selection operations performed by a localization position data selection unit 4 shown in FIG.

FIG. 3 is an explanatory diagram of localization position data in a pan A mode.

FIG. 4 is a diagram showing a case where the localization position data storage unit 7 and the order designation data storage unit 6 are combined into one, and is an explanatory diagram of an example of data arrangement in the storage unit.

FIG. 5 is an explanatory diagram of a specific example of localization position data in the pan A mode, showing a case where the selection type is AR (R) (arrange right).

FIG. 6 is an explanatory diagram of localization position data stored in a localization position data storage unit 8;

FIG. 7 is an explanatory diagram of a specific example of localization position data in the pan B mode.

FIG. 8 is an explanatory diagram of another distribution of the number of localization position data stored in the localization position data storage unit 8;

FIG. 9 is an explanatory diagram of a case where a selection probability distribution of localization position data is set arbitrarily.

FIG. 10 is a hardware configuration diagram for realizing one embodiment of the present invention.

FIG. 11 is a main flowchart illustrating processing steps according to an embodiment of the present invention.

FIG. 12 is a flowchart illustrating a panel setting process in S42 shown in FIG. 11;

FIG. 13 is a flowchart illustrating the performance operation information creation processing in S43 shown in FIG. 11;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Volume ratio control part, 2 ... Stereo amplifier, 3 ... Localization position data change part, 4 ... Localization position data selection part, 5 ... Localization position data input part, 6 ... Order designation data storage part, 7, 8 ...
Localization position data storage unit, 9 random number generation unit

Claims (5)

[Claims] 1. A localization control means for controlling a sound image localization by signals of a plurality of channels output according to an input signal in accordance with localization position data, a storage means for storing a plurality of the localization position data, and a control timing Each time an instruction signal is input, a localization position selection unit that selects the localization position data stored in the storage unit in a predetermined order and outputs the selected localization position data to the localization control unit. . 2. The storage unit stores a plurality of types of order specification data, and the localization position selection unit selects one of the plurality of types of order specification data stored in the storage unit. The sound image localization control device according to claim 1, wherein the predetermined order is set based on the selected order designation data. 3. A localization control means for controlling a localization of a sound image by a signal of a plurality of channels output in response to an input signal in accordance with localization position data, a plurality of localization position data each time a control timing instruction signal is input. A localization position selecting means for selecting one of the following with a selection probability having a spread that maximizes the selection probability of at least one localization position data, and outputting the selected localization position data to the localization control means. apparatus. 4. A localization control means for controlling a sound image localization by a plurality of channels of signals output in response to an input signal in accordance with localization position data, and a plurality of localizations each time a control timing instruction signal is input. A recording medium storing a sound image localization control program for causing a computer to function as a localization position selection unit that selects the localization position data from a storage unit in which position data is stored in a predetermined order and outputs the localization position data to the localization control unit . 5. A localization control means for controlling a sound image localization by signals of a plurality of channels output in response to an input signal in accordance with localization position data, and a plurality of localizations each time a control timing instruction signal is input. A sound image for causing a computer to function as a localization position selecting means for selecting one of the position data with a selection probability having a spread that maximizes the selection probability of at least one localization position data and outputting the selected localization position data to the localization control means; A recording medium on which a localization control program is recorded.