Directional sound boxes in multi-unit arc arrangement

Abstract

The invention discloses directional sound boxes in multi-unit arc arrangement. At least two loudspeakers or at least two sound boxes are arranged in arc with the radian less than 180 degrees. The angle between the arc and the ground is from 0 degree to 90 degrees. According to the invention, full-range loudspeakers or sound boxes of the same type are fixedly arranged in arc, so as to produce sound focusing; sound waves are gathered in a listening area in a specified direction, so as to realize a sound directional effect; sound pressure level does not attenuate with distance change under the focusing effect of multi-unit arc arrangement; oppositely, the sound pressure level rises at an intersection point; the sound pressure of the listening area is met, and at the same time the sound pressure of a non-listening area becomes smaller as the non-listening area is more and more far away from the listening area; and the sound waves carry out directional work in the specified direction. In an actual application process, the number of units of the loudspeakers or small sound boxes can be selected according to the requirement of a directional effect.

Description

technical field [0001] The invention relates to directional sound reinforcement technology, in particular to a directional sound box arranged in an arc with multiple units. Background technique [0002] At present, speakers or column speakers used in sound reinforcement are formed by putting one or a group of speakers into the box to form a sound reinforcement box, such as Figure 1~2 shown. The sound waves of the speaker or column speaker work in a way that the center of the speaker diffuses outward, such as Figure 3-4 As shown, this method of spreading out from the center of the speaker is generally suitable for large-area sound reinforcement in venues and outdoors. It has the characteristics of large diffusion area and poor directivity. Therefore, it cannot satisfy the directional expansion of sound waves to a specific area. voice request. Contents of the invention [0003] The purpose of the present invention is to provide a multi-unit arc-arranged directional sound...

AI Technical Summary

Problems solved by technology

The sound waves of the speaker or column speaker work in a way that the center of the speaker diffuses outward, such as Figure 3-4 As shown, this method of spreading out from the center of the speaker is generally suitable for large-area sound reinforcement in venues and outdoors. It has the characteristics of large diffusion area and poor directivity. Therefore, it cannot satisfy the directional expansion of sound waves to a specific area. voice request

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