Sound diffusion device

Abstract

The invention discloses a sound diffusion device which comprises a plurality of sound amplification plates arranged in an overlapped mode, each sound amplification plate comprises a vertical center line arranged vertically, the sound amplification plates are arranged symmetrically with the vertical center line as the axis, and the vertical center lines of the five sound amplification plates are arranged in an overlapped mode. The sound amplification plate comprises a first plate, a second plate, a third plate, a fourth plate and a fifth plate which are stacked in sequence, wherein the second plate, the third plate, the fourth plate and the fifth plate are arranged in a combined mode and used for shaping and diffusing sound waves emitted by the sound production device. The first plate is used for accommodating a sound production device; a first shaping hole and a second shaping hole which are the same in size are formed in the second plate and the fourth plate respectively, a shaping gap with the same shape and outer diameter as the first shaping hole is formed in the third plate, and a wave outlet allowing sound waves to penetrate out is formed in the fifth plate. According to thesound diffusion device, the sound wave generation path is changed through the shaping holes and the shaping gaps, sound diffusion is accurately controlled, meanwhile, the sound production efficiency is high, and the size of the device is small.

Description

technical field [0001] The invention relates to the technical field of loudspeakers, in particular to a sound diffusing device. Background technique [0002] The traditional loudspeaker horn controls the sound diffusion through the size of the horn and the horizontal and vertical angles. Since the sound frequency of the speaker unit spreads hemispherically in 1 / 2 space, in this case, a large amount of sound energy will be projected to the horn The inner walls then reflect and interfere with other acoustic energy, destroying the sound quality. On the other hand, due to the hemispherical diffusion of the unit, the sound energy reaching the outlet of the horn is still a spherical wave. When multiple speakers are used in combination, the overlapping area of ​​sound energy between the speakers is large, and the sound interference between them is also large. , Traditional point source speakers use different types of horns or phase plugs to change the direction of sound diffusion,...

AI Technical Summary

Problems solved by technology

[0002] The traditional loudspeaker horn controls the sound diffusion through the size of the horn and the horizontal and vertical angles. Since the sound frequency of the speaker unit spreads hemispherically in 1 / 2 space, in this case, a large amount of sound energy will be projected to the horn inner walls, which then reflect and interfere with other acoustic energy, destroying sound quality

On the other hand, due to the hemispherical diffusion of the unit, the sound energy reaching the outlet of the horn is still a spherical wave. When multiple speakers are used in combination, the overlapping area of ​​sound energy between the speakers is large, and the sound interference between them is also large. , Traditional point source speakers use different types of horns or phase plugs to change the direction of sound diffusion, but the accuracy is low and the volume is large

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