Sound wave transmitting device

Abstract

The invention discloses a sound wave transmitting device. The sound wave transmitting device comprises a main body, one side of the main body is provided with a sound wave input port, the other side of the main body is provided with a sound wave output port, the main body is in a three-dimensional diffusion trend in the direction of a center line from the sound wave input port to the sound wave output port. The area of the sound wave output port is larger than that of the sound wave input port. A plurality of channels are arranged in the main body, the inlet of each channel starts from the sound wave input port, the outlets of all channels are independent from one another and stop in the sound wave output port, the path distances of channels are equal, and the cross sections of all the channels at the same positions are equal. Sound waves entering the main body pass through the channels with the equal path distances and the same cross sections at the same position, the phase positions of the sound waves transmitted out of the outlets of the channels are basically the same, the sound waves have good same-frequency overlaying performance after passing through the sound wave transmitting device, the reflection of the sound waves in the main body can be reduced due to the fact that the main body is in the three-dimensional diffusion trend in the direction of the center line from the sound wave input port to the sound wave output port, the frequency response characteristics of the sound waves can be improved, and standing wave distortion can be reduced.

Description

technical field [0001] The invention relates to a device for improving sound wave propagation, in particular to a sound wave conducting device. Background technique [0002] When a single loudspeaker radiates into the air through a single horn, the sound wave will generate reflection and phase interference inside the horn, which will degrade the high frequency and make the frequency response uneven. When multiple loudspeakers form a vertical array for conduction, the mutual The phase interference will produce frequency cancellation and affect the desired superposition of the same frequency response. [0003] Many foreign companies have invented acoustic waveguides to solve the above problems, mainly to solve the phase interference, but the international consensus is that the length direction of the waveguide is divided according to half of the wavelength, but the width direction needs to be as small as possible, generally close to The high-frequency half-wavelength is usual...

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Problems solved by technology

The above-mentioned consensus is to increase the extension of the front plus horn in the horizontal direction enough, so that there is enough coverage in the horizontal direction. In this way, the waveguide presents two kinds of horizontal and vertical waves that are far apart during the entire internal sound transmission process. In order to reduce the width of the exit path and create too much internal negative curvature, but the above approach will greatly increase the reflection inside the waveguide, the result is a great loss of high-frequency sound pressure, which is different from the use of multiple speakers The opposite result of increasing the high-frequency sound pressure

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