JPH09149500A - Automatic sound image localization parameter calculator - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To automatically calculate a sound image localization parameter in a design stage by setting a sound image localization effect. SOLUTION: A localization area is set, and data of sound receiving points distributed in the localization area is set. The first echo time pattern at each sound receiving point is calculated from the speaker data and the room shape data. The delay of the volume auxiliary speaker is calculated so that the sound of the localization speaker at each sound receiving point satisfies the law of the first wavefront, and the maximum value at all sound receiving points is detected and used as the delay. The second echo time pattern with delay added is calculated, and the second echo time pattern calculates the attenuation level at which the volume auxiliary speaker is below the level of the localization speaker at each sound receiving point, and the maximum at all sound receiving points is calculated. Detect the value and set it as the attenuation level. The calculated volume delay speaker delay and attenuation levels are automatically calculated as sound image localization parameters.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for automatically calculating optimum parameters for sound image localization in a music hall, a theater, etc. at the design stage.

[0002]

2. Description of the Related Art FIG. 10 is a diagram showing a method relating to localization parameter design of a conventional sound image localization system. In FIG. 10, 1 is a localization speaker and 2 is a volume auxiliary speaker.
L is the distance between the localization speaker 1 and the volume auxiliary speaker 2. Now, the delay which is one of the localization parameters is calculated. The distance L between the localization speaker 1 and the volume auxiliary speaker 2 shown in FIG. 10 is read or measured from the drawing, and the localization parameter is divided by dividing the distance L between the localization speaker 1 and the volume auxiliary speaker 2 by the speed of sound. One of the delays is calculated.

[0003]

However, when the delay is calculated by such a conventional method, the design is always uniform on the safe side (the localization effect can be obtained but the level by the volume auxiliary speaker cannot be earned). Therefore, it has been difficult to obtain the parameter corresponding to the desired localization effect. Also, in the conventional example, it is difficult to enter the speaker level information at the design stage, and it is not possible to calculate the attenuation level, which is another important parameter of the localization parameters.Therefore, only the delay is calculated in the drawing, and the attenuation level is set onsite. There was a problem that there was no choice but to adjust.

The present invention solves the above-mentioned conventional problems, and automatically sets a sound image localization parameter for realizing a desired localization effect (localization area or localization probability) designated as a design target at the stage of design drawing. It is an object of the present invention to provide an excellent automatic sound image localization parameter calculation device that can be calculated dynamically.

[0005]

In order to achieve this object, the present invention provides a design target setting means for setting a localization area as a design target for the localization effect of a sound image, and sound receiving points distributed in the localization area. Sound receiving point distribution generating means for generating data, echo time pattern calculating means for calculating a first echo time pattern at each sound receiving point from room shape data and speaker data, and sound of a localization speaker at each sound receiving point A delay calculating means for calculating the delay of the volume auxiliary speaker so as to satisfy the law of the first wavefront; a maximum delay detecting means for detecting the maximum value of the delays at all sound receiving points to be the delay of the volume auxiliary speaker; Delay addition means for calculating the second echo time pattern with the delay of the auxiliary speaker, and volume auxiliary speed in the second echo time pattern. The attenuation level calculation means calculates the attenuation level at each sound receiving point so that the sound level is below the level of the stereophonic speaker, and the maximum value of the attenuation level at all sound receiving points is detected and used as the volume auxiliary speaker's attenuation level. And a maximum attenuation level detecting means.

Further, the localization probability is set in the design target setting means, and the attenuation level calculation means applies the sound image separation chart previously obtained by the psychoacoustic experiment to the second echo time pattern, and the sound image is directed toward the localization speaker with the localization probability. It is characterized in that the attenuation level is calculated so that the is localized without separating.

Further, it is characterized in that the volume auxiliary speaker is provided with a low-pass filter setting means for setting a coefficient of the low-pass filter so as to obtain a more localization effect.

Further, there is provided a limiting means for generating data of sound receiving points distributed in the localization area set as a design target of the localization effect of the sound image and limiting the sound receiving points by the cover area of the volume auxiliary speaker. Is characterized by.

Further, data of sound receiving points distributed in a localization area set as a design target of a sound image localization effect is generated, and the sound receiving points are limited by a cover area of each of a plurality of volume auxiliary speakers in the system. A plurality of limiting means and a plurality of sound image localization parameters for the volume auxiliary speaker at each sound receiving point for each limiting means, and the sound image localization parameter having the largest value is detected from the sound image localization parameters of each volume auxiliary speaker. And a maximum localization parameter detecting means.

Data of sound receiving points distributed in a localization area set as a design target of a sound image localization effect is generated, and the sound receiving points are generated by the cover areas of a plurality of volume auxiliary speakers in the system. A plurality of limiting means for limiting and a logical sum of the plurality of sound receiving points are taken to eliminate the redundancy of the sound receiving points due to the overlap of the cover areas of the respective volume auxiliary speakers, and calculate the sound receiving points for each system. The logical sum calculation means and the echo time pattern calculation means for calculating the first echo time pattern at each sound receiving point from the room shape data, the localization speaker data, and the volume auxiliary speaker data belonging to the system are configured. It is a thing.

According to the above configuration, the delay and attenuation level of the volume auxiliary speaker are calculated, and the coefficient of the low-pass filter is calculated to obtain the sound image localization parameter for the volume auxiliary speaker. In addition, the sound receiving point is limited by the limiting means, which is required more quickly. Furthermore, the delay and attenuation levels required for the speaker system to which a plurality of volume auxiliary speakers belong can be calculated, and the sound image localization parameters for the speaker system are also automatically calculated. It can be calculated.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an outline of an automatic sound image localization parameter calculation device according to a first embodiment of the present invention. In addition, in each of the following figures, FIG.
The same reference numerals are given to those having the same operation and effect. FIG. 2 is a conceptual diagram of delay determination.

In FIG. 1, 10 is a design goal setting means for setting a design goal of localization effect, 11 is a sound reception point distribution generation means for generating data of sound reception points distributed in the localization area, and 12 is each sound reception. Echo time pattern calculation means for calculating the first echo time pattern of a point, 13 is room shape data, 14 is speaker data, and 15 is a volume so that the sound of the localization speaker at each sound receiving point satisfies the law of the first wave front. Delay calculation means for calculating the delay of the auxiliary speaker (see FIG. 2), 16 is maximum delay detection means for detecting the maximum delay value at all sound receiving points, and 17 is the maximum delay value for the first echo time pattern. Delay addition means for calculating the added second echo time pattern, 18 is an attenuation level calculation means for calculating the attenuation level at each sound receiving point of the second echo time pattern, and 19 is the total reception level. Maximum attenuation level detecting means for detecting the maximum value of the calculated attenuation level at the sound point, 20 is an echo time pattern calculating means 12, room shape data 13, speaker data 14, delay calculating means 15, maximum delay detecting means 16, delay Adding means 17, attenuation level calculating means 18, maximum attenuation level detecting means
It is a localization parameter calculation means consisting of 19.

The operation of the first embodiment configured as described above will be described with reference to the block diagram of FIG. First, a localization area is set in the design goal setting means 10 as a design goal of a sound image localization effect. The sound receiving point distribution generating means 11 generates data of sound receiving points distributed in the set localization area. Next, the echo time pattern calculation means 12
Calculates the first echo time pattern at each sound receiving point of the generated sound receiving point data from the room shape data 13 and the speaker data 14. Further, the delay calculation means 15 calculates the necessary delay value of the volume auxiliary speaker from the first echo time pattern at each sound receiving point so that the sound of the localization speaker satisfies the law of the first wavefront. The maximum delay detection means 16 detects the maximum delay value at all sound receiving points, and outputs it as a delay of the volume auxiliary speaker.

The delay adding means calculates a second echo time pattern by adding the delay of the volume auxiliary speaker to the first echo time pattern. The attenuation level calculation means calculates the required attenuation level at each sound receiving point so that the volume auxiliary speaker becomes the level of the localization speaker or less in the second echo time pattern. Then, the maximum value of the attenuation level at all sound receiving points is detected, and the maximum attenuation level detecting means outputs it as the attenuation level of the volume auxiliary speaker.

As described above, the combination of the delay and the attenuation level of the volume auxiliary speaker is output as the sound image localization parameter for the volume auxiliary speaker. As described above, as the desired localization effect, by setting the localization area as the design target in the first embodiment, the sound image localization parameter for realizing this can be automatically calculated at the stage of the design drawing. it can.

Next, FIG. 3 is a block diagram showing the outline of the sound image localization parameter automatic calculation device in the second embodiment. In FIG. 3, 10 is design target setting means, 11 is sound receiving point distribution generating means, 12 is echo time pattern calculating means, and 13 is
Is room shape data, 14 is speaker data, 15 is delay calculation means, 16 is maximum delay detection means, 17 is delay addition means, 19 is maximum attenuation level detection means, 20 is localization parameter calculation means, and 21 is second echo. It is an attenuation level calculation means for applying a sound image separation chart 22 previously obtained by an psychoacoustic experiment to a time pattern, and calculating an attenuation level with a localization probability such that the sound image is localized without being separated in the localization speaker direction. Further, FIG. 4 is a sound image separation chart previously obtained by psychoacoustic experiments, and FIG. 5 is a conceptual diagram of determination of attenuation level of localization probability.

The second embodiment configured as described above is
Set the localization area and localization probability in the design target setting means 10,
In the configuration of the first embodiment, the attenuation level calculating means 18 shown in FIG. 1 applies the sound image separation chart 22 (see FIG. 4) previously obtained by the psychoacoustic experiment to the second echo time pattern to determine the localization probability. The attenuation level calculating means 21 calculates the attenuation level so that the sound image is localized in the direction of the localization speaker without being separated (see FIG. 5).

Also in the operation, the design target setting means 10 sets the localization area and the localization probability as the design target of the localization effect of the sound image. Data of sound receiving points distributed in the set localization area is generated, and a first echo time pattern at each sound receiving point is calculated. Further, a required delay value of the volume auxiliary speaker is calculated, and the maximum value is detected and output as the delay of the volume auxiliary speaker.

Next, the second echo time pattern to which the delay of the volume auxiliary speaker is added is calculated. The attenuation level calculation means 21 applies the sound image separation chart 22 previously obtained by the psychoacoustic experiment to the second echo time pattern, and the sound image is separated in the localization speaker direction with the localization probability set by the design target setting means 10. Calculate the required attenuation level at each sound receiving point so that the sound is localized without doing so. Furthermore, the maximum value of the attenuation level at all sound receiving points is detected and output as the attenuation level of the volume auxiliary speaker.

As described above, according to the second embodiment, by setting the localization area and localization probability as the desired localization effect as the design target, the sound image localization parameter for realizing this is set by the human at the stage of design drawing. The auditory characteristics can be automatically calculated in consideration of the sound image separation chart 22.

Next, FIG. 6 is a block diagram showing an outline of the sound image localization parameter automatic calculation device in the third embodiment. In FIG. 6, 10 is design target setting means, 11 is sound receiving point distribution generating means, 12 is echo time pattern calculating means, 13
Is room shape data, 14 is speaker data, 15 is delay calculation means, 16 is maximum delay detection means, 17 is delay addition means, 18 is attenuation level calculation means, 19 is maximum attenuation level detection means, and 20 is localization parameter calculation means. ,
Reference numeral 23 is a low-pass filter setting means for setting the coefficient of the low-pass filter in the volume auxiliary speaker so that a more localized effect can be obtained.

The third embodiment configured as described above is
The configuration shown in the first embodiment is additionally provided with a low-pass filter setting means 23 for appropriately attenuating a sound in a high frequency range with respect to the volume auxiliary speaker in order to further enhance the localization effect. Further, the operation is the same as that in the first embodiment until the delay and the attenuation level of the volume auxiliary speaker are calculated.

By the low-pass filter setting means 23, from the first echo time pattern at each sound receiving point, the coefficient of the low-pass filter for appropriately attenuating the sound in the high frequency range for the volume auxiliary speaker in order to further enhance the localization effect. To set. Then, the delay and attenuation level of the volume auxiliary speaker can be combined with the setting of the low-pass filter to automatically calculate the sound image localization parameter for the volume auxiliary speaker.

As described above, by setting a desired localization effect as a design target, the sound image localization parameter for realizing this is considered not only by the delay and attenuation levels, but also by the frequency characteristic by the setting of the low-pass filter. Thus, a parameter having a higher localization effect can be automatically calculated at the stage of design drawing.

Next, FIG. 7 is a block diagram showing the outline of the sound image localization parameter automatic calculation device in the fourth embodiment. In FIG. 7, 10 is a design target setting means, 11 is a sound receiving point distribution generating means, 20 is a localization parameter calculating means, and 24 is a limiting means for limiting the sound receiving points by the cover area of the volume auxiliary speaker.

The fourth embodiment configured as described above is
The limiting means for limiting the data of the sound receiving points to the configuration shown in the first embodiment by the cover area of the volume auxiliary speaker and generating the data of the sound receiving points distributed in the localization area limited by the cover area. 24 is newly established.

A localization area is set as a design target of the localization effect of a sound image, and data of sound receiving points distributed in the localization area is generated. Furthermore, the limiting means 24 limits the data of the sound receiving point by the cover area of the volume auxiliary speaker,
Data of the sound receiving point limited by the cover area is generated. After that, the first echo time pattern at each sound receiving point of the sound receiving point data is calculated from the room shape data and the speaker data, and the delay value is calculated from the first echo time pattern to obtain all the sound receiving points. Detect the maximum delay value at a point. Also, the detected delay is added to the first echo time pattern to calculate the second echo time pattern, and the attenuation level is calculated by the second echo time pattern to obtain the maximum value of the attenuation level at all sound receiving points. To detect. As a result, the delay and the attenuation level of the volume auxiliary speaker are output.

The calculation of the sound image localization parameter for each cover area of the volume auxiliary speaker is described in the first embodiment as an example, but any method described in the second and third embodiments may be used. In this way, since the sound receiving point is limited by the limiting means, the sound image localization parameter for the volume auxiliary speaker can be calculated faster at the stage of design drawing.

Next, FIG. 8 is a block diagram showing an outline of the automatic sound image localization parameter calculating device in the fifth embodiment. In FIG. 8, 10 is a design target setting means, 11 is a sound receiving point distribution generating means, 20 is a localization parameter calculating means, 24 is a limiting means, and 25 is the largest value among the sound image localization parameters of each volume auxiliary speaker. It is a maximum localization parameter detecting means for detecting a sound image localization parameter.

The fifth embodiment configured as described above is
When systematizing multiple volume auxiliary speakers together,
In order to calculate the sound image localization parameter of the volume auxiliary speaker of that system, the limiting means of the configuration shown in the fourth embodiment.
The maximum localization parameter detecting means for detecting the maximum value of the obtained sound image localization parameters by providing 24 and localization parameter calculation means 20 for each of the plurality of volume auxiliary speakers
25 is newly provided.

First, similarly to the fourth embodiment, the localization area is set and the data of the sound receiving points to be distributed are generated. Now, the sound receiving point data limited by the cover area of the systematic volume auxiliary speaker of one system is generated. The first echo time pattern at each sound receiving point of the data is calculated, the delay value is calculated from the first echo time pattern, and the maximum delay value at all sound receiving points is detected. Also, the second echo time pattern is calculated by adding the detected delay to the first echo time pattern, the attenuation level is calculated from the second echo time pattern, and the maximum value of the attenuation level at all sound receiving points is calculated. To detect. Thereby, the delay and the attenuation level of the volume auxiliary speaker are obtained. Further, the delay and attenuation levels are similarly obtained for all the volume auxiliary speakers belonging to the other system. Then, the maximum localization parameter detecting means 25 detects the maximum value among the obtained delay and attenuation levels from the sound image localization parameters for all volume auxiliary speakers belonging to the system, and outputs it as the sound image localization parameter for that system. To be done.

Although the sound image localization parameter of the fifth embodiment is calculated by using the first embodiment as an example, any of the methods described in the second and third embodiments may be used. Thus, even when the acoustic system is large-scale and systematizes multiple speakers collectively, the calculation of the sound image localization parameter for each volume auxiliary speaker is applied to all volume auxiliary speakers belonging to the system, and By specifying the desired localization effect as a design target by adopting the maximum value among the parameters as a parameter, the sound image localization parameter for each system to achieve this is automatically calculated at the stage of design drawings. You can

Next, FIG. 9 is a block diagram showing an outline of the sound image localization parameter automatic calculation device in the sixth embodiment. In FIG. 9, 10 is design target setting means, 11 is sound receiving point distribution generating means, 12 is echo time pattern calculating means, 13
Is room shape data, 15 is delay calculation means, 16 is maximum delay detection means, 17 is delay addition means, 19 is maximum attenuation level detection means, 20 is localization parameter calculation means, 24
Is a limiting means, and 26 is a logical sum calculation that calculates the sound reception point for each system by taking the logical sum of the sound reception points and eliminating the redundancy of the sound reception points due to the overlap of the cover area of each volume auxiliary speaker. Means, 27 is room shape data 13, localization speaker data
28, an echo time pattern calculating means for calculating a first echo time pattern at each sound receiving point from the volume auxiliary speaker data 29 belonging to the system.

The sixth embodiment configured as described above is
In order to systematize the plurality of volume auxiliary speakers shown in Embodiment 5 collectively and calculate the sound image localization parameter for each system, the limiting means 24 is provided for each of the plurality of volume auxiliary speakers, and further, by the cover area of the volume auxiliary speaker. A logical sum calculating means 26 for calculating a logical sum of the data of the sound receiving points distributed in the limited localization area is newly provided, and the echo time pattern calculating means 27 of the localization parameter calculating means 20.
In addition, the first echo time pattern at each sound receiving point is calculated from the room shape data 13, the localization speaker data 28, and the volume auxiliary speaker data 29 in the system.

First, similarly to the fifth embodiment, a localization area is set and data of distributed sound receiving points is generated. The data of the sound receiving point limited by the cover area of the systematic volume auxiliary speaker of one system is generated, and the data of the sound receiving point is also generated for the next volume auxiliary speaker belonging to the system. Sound reception point data is generated for all the volume auxiliary speakers belonging to the system. The logical sum calculation means 26 calculates the logical sum of the plurality of sound receiving point data, and eliminates the redundancy of the sound receiving points due to the overlap of the cover areas of the respective volume auxiliary speakers to calculate the sound receiving point data for each system. To do.

In the echo time pattern calculation means 27 of the localization pattern calculation means 20, the first echo time in the system at each sound receiving point is determined by the room shape data 13, the localization speaker data 28, and the volume auxiliary speaker data 29 in the system. Calculate the pattern. The subsequent operation is similar to that of the first embodiment.
The calculated delay and attenuation level of the volume auxiliary speaker are calculated as sound image localization parameters for the system.

Although the sound image localization parameter of the sixth embodiment is calculated by using the first embodiment as an example, any of the methods described in the second and third embodiments may be used. In this way, even when the acoustic system is large-scale and systematizes a plurality of speakers collectively, the delay and attenuation level of the system to which the plurality of volume auxiliary speakers belong are directly calculated. Moreover, since the logical sum of the sound receiving points is taken, the redundancy of the sound receiving points due to the overlap of the cover areas of the respective volume auxiliary speakers can be eliminated and the calculation can be performed quickly and efficiently. By designating the desired localization effect as a design goal,
Sound image localization parameters for each system to achieve this
It can be calculated automatically at the design drawing stage.

[0039]

As described above, according to the present invention,
Data of the sound receiving points distributed in the localization area set as the design target of the localization effect is generated, and the first echo time pattern at each sound receiving point is calculated by the echo time pattern calculation means from the speaker data and the room shape data. The delay of each sound receiving point is calculated from the first echo time pattern so that the sound of the localization speaker satisfies the law of the first wave front, and the maximum value at all sound receiving points is detected to detect the volume auxiliary speaker. Delay. In addition, a second echo time pattern is calculated by adding the delay of the volume auxiliary speaker to the first echo time pattern, and each reception is performed so that the volume auxiliary speaker is below the level of the localization speaker in the second echo time pattern. The attenuation level of the sound point is calculated, and the maximum value at all sound reception points is detected and used as the attenuation level of the volume auxiliary speaker. The obtained combination of the delay and the attenuation level of the volume auxiliary speaker can be automatically calculated as the sound image localization parameter for the volume auxiliary speaker.

Further, a sound image separation chart previously obtained by an acoustic psychological experiment is applied to the second echo time pattern so that the sound image is localized without being separated in the localization speaker direction with the localization probability set as the design target of the localization effect. By calculating the attenuation level, detecting the maximum value of the attenuation level at all sound receiving points, and outputting it as the attenuation level of the volume auxiliary speaker, the sound image localization parameters are separated into the human auditory characteristics at the stage of design drawing. It can be calculated automatically by taking into account the chart.

Further, in order to enhance the localization effect, a low-pass filter for appropriately attenuating the sound in the high frequency range is set for the volume auxiliary speaker, and the delay and attenuation level of the volume auxiliary speaker are combined with the coefficient setting of the low-pass filter. It can be automatically calculated as a sound image localization parameter for the volume auxiliary speaker.

Further, the sound receiving point data distributed in the localization area limited by the cover area is generated by the limiting means for limiting the sound receiving point group to the cover area of the volume auxiliary speaker, so that the volume auxiliary speaker The sound image localization parameter can be calculated faster.

Even when the acoustic system is large-scale and systematizes a plurality of speakers collectively, the calculation of the sound image localization parameter for each volume auxiliary speaker is applied to all the volume auxiliary speakers belonging to the system. By adopting the maximum value parameter among them, it is possible to automatically calculate the sound image localization parameter for each system for realizing this.

Even when the acoustic system is large-scale and systematizes a plurality of speakers collectively, the delay and attenuation level of the system to which the plurality of volume auxiliary speakers belong are directly calculated, and further the logical sum of the sound receiving points is obtained. Therefore, the redundancy of the sound receiving point due to the overlap of the coverage areas of the respective volume auxiliary speakers can be eliminated and the calculation can be performed quickly and efficiently.

As described above, by setting a desired localization effect as a design target, a sound image localization parameter for achieving this can be automatically calculated at the stage of design drawing.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an outline of a sound image localization parameter automatic calculation device according to a first embodiment of the present invention.

FIG. 2 is a conceptual diagram of determining a delay.

FIG. 3 is a block diagram schematically showing a sound image localization parameter automatic calculation device according to a second embodiment of the present invention.

FIG. 4 is a sound image separation chart previously obtained by psychoacoustic experiments.

FIG. 5 is a conceptual diagram of determining the attenuation level of localization probability.

FIG. 6 is a block diagram showing an outline of a sound image localization parameter automatic calculation device according to a third embodiment of the present invention.

FIG. 7 is a block diagram showing an outline of a sound image localization parameter automatic calculation device according to a fourth embodiment of the present invention.

FIG. 8 is a block diagram showing an outline of a sound image localization parameter automatic calculation device according to a fifth embodiment of the present invention.

FIG. 9 is a block diagram showing an outline of a sound image localization parameter automatic calculation device in a sixth embodiment of the present invention.

FIG. 10 is a diagram showing a method relating to localization parameter design of a conventional sound image localization system.

[Explanation of symbols]

1 ... Localization speaker, 2 ... Volume auxiliary speaker, 10 ... Design target setting means, 11 ... Sound receiving point distribution generating means, 12, 27
… Echo time pattern calculation means, 13… Room shape data,
14 ... Speaker data, 15 ... Delay calculation means, 16
... maximum delay detection means, 17 ... delay addition means,
18, 21 ... Attenuation level calculating means, 19 ... Maximum attenuation level detecting means, 20 ... Localization parameter calculating means, 22 ... Sound image separation chart, 23 ... Low pass filter setting means, 24 ... Limiting means, 25 ... Maximum localization parameter detecting means, 26 ... Logical sum calculation means, 28 ... Localization speaker data, 29 ... Volume auxiliary speaker data belonging to system.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location H04S 1/00 G06F 15/60 634C 680B G10K 15/00 M

Claims (6)

[Claims] 1. A design target setting means for setting a localization area as a design target for a localization effect of a sound image, a sound reception point distribution generation means for generating data of sound reception points distributed in the localization area, and room shape data. , An echo time pattern calculation means for calculating a first echo time pattern at each sound receiving point from the speaker data, and a delay of the volume auxiliary speaker so that the sound of the localization speaker satisfies the law of the first wave front at each sound receiving point. A delay calculating means for calculating, a maximum delay detecting means for detecting a maximum value of delays at all sound receiving points to be a delay of the volume auxiliary speaker, and a second echo time pattern including the delay of the volume auxiliary speaker Delay addition means for calculating, and in the second echo time pattern, so that the volume auxiliary speaker is below the level of the localization speaker Equipped with attenuation level calculation means for calculating the attenuation level at each sound receiving point and maximum attenuation level detection means for detecting the maximum value of the attenuation level at all sound receiving points and setting it as the attenuation level of the volume auxiliary speaker. A sound image localization parameter automatic calculation device characterized by calculating a delay and an attenuation level of an auxiliary speaker and automatically calculating a sound image localization parameter for a volume auxiliary speaker. 2. Design target setting means for setting a localization area and a localization probability as design goals of a localization effect of a sound image, and sound reception point distribution generation means for generating data of sound reception points distributed in the localization area. Echo time pattern calculation means for calculating a first echo time pattern at each sound receiving point from room shape data and speaker data, and a volume auxiliary speaker so that the sound of the localization speaker satisfies the law of the first wave front at each sound receiving point. Delay calculating means for calculating the delay of the volume auxiliary speaker, a maximum delay detecting means for detecting the maximum value of the delays at all sound receiving points and setting it as the delay of the volume auxiliary speaker, and a second echo including the delay of the volume auxiliary speaker. A delay addition means for calculating a time pattern and a sound image separation chart previously obtained by psychoacoustic experiments are applied to the second echo time pattern. Then, an attenuation level calculating means for calculating the attenuation level so that the sound image is localized with the localization probability in the localization speaker direction without being separated, and the attenuation level of the volume auxiliary speaker by detecting the maximum value of the attenuation level at all sound receiving points. A maximum sound level detecting means for determining the level, the delay and attenuation level of the volume auxiliary speaker are calculated more accurately, and the sound image localization parameter for the volume auxiliary speaker is automatically calculated. apparatus. 3. Design target setting means for setting a localization area as a design target for localization effect of a sound image, sound receiving point distribution generating means for generating data of sound receiving points distributed in the localization area, and speaker data. Echo time pattern calculation means for calculating the first echo time pattern at each sound receiving point from the room shape data, and delay of the volume auxiliary speaker so that the sound of the localization speaker satisfies the law of the first wave front at each sound receiving point. A delay calculating means for calculating, a maximum delay detecting means for detecting a maximum value of delays at all sound receiving points to be a delay of the volume auxiliary speaker, and a second echo time pattern including the delay of the volume auxiliary speaker Delay addition means for calculating, and in the second echo time pattern, so that the volume auxiliary speaker is below the level of the localization speaker Attenuation level calculation means that calculates the attenuation level at each sound receiving point, maximum attenuation level detection means that detects the maximum value of the attenuation level at all sound receiving points and sets it as the attenuation level of the volume auxiliary speaker, and more localization effect The low-pass filter setting means for setting the coefficient of the low-pass filter to the volume auxiliary speaker is calculated so that the coefficient of the low-pass filter is calculated for the delay and the attenuation level of the volume auxiliary speaker, and the sound image localization parameter for the volume auxiliary speaker is automatically calculated. An apparatus for automatically calculating a sound image localization parameter, which is characterized in that the sound image localization parameter is calculated. 4. Data of sound receiving points distributed in a localization area set as a design target of a localization effect of a sound image is generated,
A limiting means for limiting the sound receiving point by the cover area of the volume auxiliary speaker is provided. Since the sound receiving point is limited, the delay and the attenuation level of the volume auxiliary speaker can be obtained faster, and the sound image localization parameter for the volume auxiliary speaker can be set. 2. The calculation according to claim 1, wherein the calculation is performed automatically.
2. The sound image localization parameter automatic calculation device described in 2 or 3. 5. Data of sound receiving points distributed in a localization area set as a design target of a localization effect of a sound image is generated,
A plurality of limiting means for limiting the sound receiving point by the cover areas of a plurality of volume auxiliary speakers in the system, and a plurality of sound image localization parameters for the volume auxiliary speaker at each sound receiving point of each limiting means are calculated. A maximum localization parameter detecting means for detecting a sound image localization parameter having the largest value from the sound image localization parameters of the volume auxiliary speaker is provided, and a delay and an attenuation level required for the speaker system to which the plurality of volume auxiliary speakers belong are calculated. The sound image localization parameter automatic calculation device according to claim 1, wherein the sound image localization parameter for the speaker system is automatically calculated. 6. Data of sound receiving points distributed in a localization area set as a design target of a localization effect of a sound image is generated,
A plurality of limiting means for limiting the sound receiving point by the respective cover areas of the plurality of volume auxiliary speakers in the system, and a logical sum of the plurality of sound receiving points are used to obtain the reception by overlapping the cover areas of the respective volume auxiliary speakers. The first echo at each sound reception point from the logical sum calculation means for eliminating the sound point redundancy and calculating the sound reception point for each system, and the room shape data, the localization speaker data, and the volume auxiliary speaker data belonging to the system Equipped with an echo time pattern calculation means for calculating a time pattern, the delay and attenuation levels required for a speaker system to which a plurality of volume auxiliary speakers belong are directly calculated, and a sound image localization parameter for the speaker system is automatically calculated. The sound image localization parameter automatic calculation device according to claim 1, 2, or 3.