JP2002345068A - Sound source angle adjustment device - Google Patents

Abstract

(57) [Summary] [Problem] To provide a sound source angle adjusting device that automatically adjusts a swing angle of a sound source so as to face an axis attachment point. A control unit (10) determines a mounting position (A) of a speaker mounted on a venue such as a hall and an axis attachment point (X) indicating a direction to which the speaker should be directed by a well-known sound field simulation. Given as data indicating coordinate points placed in three-dimensional coordinates with O as the origin, when these data are given, a vector of each axis landing point and the data of the mounting position of the corresponding speaker is obtained by OA-OX. Are output to the corresponding angle adjustment unit 11. The angle adjustment unit 11 adjusts the swing angle of the speaker SP according to the vector of the input data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound source angle adjusting device for adjusting a swing angle of a sound source such as a speaker installed in a hall or the like.

[0002]

2. Description of the Related Art Conventionally, a speaker installed in a hall or the like predicts a sound field that changes depending on the type of an event to be held and the arrangement of facilities in a venue by simulation or the like. Find the point in the venue to be pointed (axis attachment point), mark the axis attachment point in the hall for each speaker, adjust the angle manually so that the pointer etc. match the axis attachment point from the speaker mounting position, The swing angle was being adjusted.

[0003]

However, in such a conventional speaker angle adjustment method, since it is necessary to manually adjust the swing angle with respect to the axis attachment point for each speaker, it takes a lot of labor and labor. There was a problem of inefficiency.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a sound source angle adjusting device for automatically adjusting a swing angle of a sound source so as to be directed to an axis attachment point.

[0005]

A sound source angle adjusting apparatus according to the present invention comprises an angle adjusting unit for changing a swing angle of a sound source, and three-dimensional coordinate data of a position of the sound source and a point at which the sound source is directed. A control unit that determines a vector between a position and a point at which the sound source is directed, controls the angle adjustment unit based on the vector, and determines a swing angle of the sound source. With this configuration, the swing angle of the sound source is determined from the position of the sound source and the three-dimensional coordinate data of the point to which the sound source is directed.

Here, it is preferable that the three-dimensional coordinate data of the point to which the sound source is directed is transferred from the sound field simulation means. With this configuration, the result of the sound field simulation is directly transferred to the control unit.

Further, the sound source angle adjusting device of the present invention is provided with an angle adjusting unit for changing a swing angle of the sound source, and is attached to the sound source, and detects a predetermined signal in a direction in which the sound source is directed and outputs the level. A configuration that includes a sensing unit and a control unit that monitors the level of the signal output from the sensing unit, controls the angle adjustment unit, and determines the swing angle of the sound source to an angle at which the level of the signal is the highest. Have. With this configuration, a predetermined signal is sensed, and the swing angle of the sound source is determined at an angle having the highest level.

Here, it is preferable that a microphone for sensing sound as the predetermined signal is used as the sensing means. With this configuration, the swing angle of the sound source is determined to be the angle at which the level of the sound detected by the microphone is highest.

The sound source angle adjusting method according to the present invention further comprises a step of obtaining a vector between the position of the sound source and the point at which the sound source is pointed from three-dimensional coordinate data of the position of the sound source and the point at which the sound source is pointed. Determining the swing angle of the sound source based on the vector. With this configuration, the swing angle of the sound source is determined from the attachment position of the sound source and the three-dimensional coordinate data of the point to which the sound source is directed.

The sound source angle adjusting method according to the present invention includes a step of monitoring a level of a predetermined signal in a direction of a sound source attached to the venue, and a step of swinging the sound source to an angle at which the level of the signal is highest. Determining the angle. With this configuration, a predetermined signal is sensed, and the swing angle of the sound source is determined at an angle having the highest level.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are diagrams showing a first embodiment of a speaker angle adjusting device which is an example of a sound source angle adjusting device according to the present invention.

As shown in FIG. 1, the speaker angle adjusting apparatus according to the present embodiment includes n angle adjusting units 11 for adjusting the swing angles of _n speakers SP _{1 to} SP _n , and each angle adjusting unit 11. Control section 10 which outputs angle adjustment information to
It has.

As shown in FIG. 2, the control unit 10 stores information A (x ₀ , y ₀₎ having the origin at a predetermined position O of the venue as information indicating a mounting position A of a speaker attached to the venue such as a hall. , Z ₀ ). In FIG. 2, the arena surface is a surface with a stage, and a seat for a spectator is provided on the audience side.

An axis attachment point X, which is determined by a well-known sound field simulation and indicates a direction in which each speaker should be directed, is similarly represented as X (x ₁ , y ₁ , z ₁ ).

When the data of the speaker mounting position A and the axis attachment point X are given, the control unit 10 calculates a vector between each axis attachment point and the data of the corresponding speaker attachment position as OA-OX = (x _{0, y 0, z 0)} - (x 1,
y ₁ , z ₁ ) = (x ₀ −x ₁ , y ₀ −y ₁ , z ₀ −z ₁ ), and outputs it to the corresponding angle adjustment unit 11.

The angle adjusting unit 11 adjusts the swing angle of the speaker SP so that the vector of the input data and the direction of the speaker SP become parallel.

As described above, in the present embodiment, a vector from the speaker to the axis attachment point is calculated from the three-dimensional coordinate data of the mounting position A of each speaker and the axis attachment point X,
Since the swing angle of the speaker is adjusted by the vector, the angle of the speaker can be automatically set.

As another aspect of the present embodiment, data of the axis landing point corresponding to each speaker is transferred from a terminal such as a personal computer which has executed a sound field simulation at a remote place, and is directly input to the control unit 10. To do. With this configuration, it is possible to save the trouble of outputting and inputting the simulation result, and to set the simulation result immediately.

FIG. 3 is a view showing a second embodiment of the speaker angle adjusting device according to the present invention. Note that the present embodiment is configured substantially in the same manner as the above-described first embodiment, and thus the same reference numerals are given to the same configurations, and only the characteristic portions will be described.

In FIG. 3, a microphone (sensing means) 12
Has a high directivity in a single direction, and is attached to each speaker such that the directivity of the microphone 12 is oriented in the direction in which each speaker faces.

A transmitter for transmitting a predetermined sound is placed at one of the axis attachment points indicating the direction in which each speaker should be directed, which is obtained by a well-known sound field simulation.
Information (for example, numbers 1 to n) for specifying a speaker corresponding to the axis attachment point where the transmitter is placed is input to the control unit 10.

The control unit 10 monitors the level of the audio signal collected by the microphone 12 attached to the speaker SP for adjusting the angle specified by the input information, and determines the angle at which the level of the audio signal is the highest. The angle of the speaker SP is detected while being changed by the angle adjusting unit 11, and the angle is fixed as the swing angle of the speaker.

As described above, in the present embodiment, the angle of the speaker is automatically set because the microphone 12 attached to the speaker senses the sound emitted from the transmitter at the pivot point and adjusts the angle. be able to.

In this embodiment, the microphone 12 for detecting the sound emitted from the transmitter is used as the sensing means. However, the present invention is not limited to this. For example, a figure or a color of a captured image may be detected.

The mounting position of the sensing means does not need to be on a sound source such as a speaker, but may be on a structure (post, wall, etc.) near the sound source. In that case, the direction of the sound source is changed in conjunction with the direction of the sensing means.

The present invention is not limited to a speaker, and it goes without saying that the present invention can be applied to any speaker that emits a sound such as a bell or a siren.

The present invention can be applied to a rack in which a plurality of speakers are combined to control the direction of the rack.

[0028]

As described above, the present invention determines the mounting position of the sound source and the sound source by determining the swing angle of the sound source based on the three-dimensional coordinate data of the mounting position of the sound source and the point to which the sound source is directed. It is possible to provide a sound source angle adjustment device that can automatically determine the swing angle of a sound source simply by giving three-dimensional coordinate data of a point to which the sound source is directed, and saves labor and time.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing a speaker angle adjusting device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a venue for explaining an angle adjusting method of the speaker angle adjusting device according to the first embodiment of the present invention.

FIG. 3 is a schematic block diagram showing a speaker angle adjusting device according to a second embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 control unit 11 angle adjustment unit 12 microphone (sensing means)

Claims (6)

[Claims] An angle adjusting unit for changing a swing angle of a sound source;
The sound source is obtained by obtaining a vector between the position of the sound source and the point at which the sound source is directed from three-dimensional coordinate data of the position of the sound source and the point at which the sound source is directed, and controlling the angle adjustment unit based on the vector. And a control unit for determining a swing angle of the sound source. 2. The sound source angle adjusting device according to claim 1, wherein three-dimensional coordinate data of a point to which the sound source is directed is transferred from a sound field simulation unit. 3. An angle adjusting unit for changing a swing angle of a sound source;
Sensing means attached to the sound source, for sensing a predetermined signal in a direction facing the sound source and outputting the level thereof;
A sound source comprising: a control unit that monitors the level of the signal output by the sensing unit, controls the angle adjustment unit, and determines the swing angle of the sound source to an angle at which the signal level is the highest. Angle adjustment device. 4. The sound source angle adjusting device according to claim 2, wherein a microphone that senses sound as the predetermined signal is used as the sensing means. 5. A step of obtaining a vector between the position of the sound source and the point at which the sound source is directed from three-dimensional coordinate data of the position of the sound source and the point at which the sound source is directed, and based on the vector, Determining a swing angle. 6. A method of monitoring a level of a predetermined signal in a direction of a sound source attached to a venue, and determining a swing angle of the sound source so that the level of the signal is highest. Characteristic sound source angle adjustment method.