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Method and device for feedback suppression of sound box

A feedback suppression and sound box technology, applied in the direction of frequency/direction characteristic devices, signal processing, electrical components, etc., can solve the problems of poor suppression of howling phenomena and the inability to effectively remove howling phenomena, and achieve the goal of suppressing howling phenomena Effect

Active Publication Date: 2019-12-13
深圳市创锐智汇科技有限公司
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Problems solved by technology

However, this method has a poor ability to suppress the howling phenomenon, and cannot effectively remove the howling phenomenon.

Method used

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  • Method and device for feedback suppression of sound box
  • Method and device for feedback suppression of sound box

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Embodiment Construction

[0010] The technical solutions of the present invention will be further described in more detail below in conjunction with specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0011] The technical solution of the present invention will be described in more detail below with reference to the drawings and embodiments.

[0012] It should be noted that, if there is no conflict, the embodiments of the present invention and various features in the embodiments can be combined with each other, and all are within the protection scope of the present invention. In addition, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an orde...

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Abstract

The invention discloses a feedback suppression method and apparatus for a sound box. The apparatus collects a sound signal through a frequency division module and performs frequency division processing on the sound signal to divide the sound signal into a high frequency sound signal and a low frequency sound signal; performs frequency shifting processing on the high frequency sound signal through a processing module and meanwhile performs phase shifting processing on the low frequency sound signal to obtain a high frequency sound output signal and a low frequency sound output signal; and receives the high frequency sound output signal and the low frequency sound output signal through a synthesis module and synthesizes the sound output signals again and outputs the synthesized sound signal. By adoption of the feedback suppression method and apparatus, the squeaking of the sound box equipment can be effectively suppressed, and the output sound quality of the sound box equipment is not affected.

Description

technical field [0001] The invention relates to the field of sound box equipment, in particular to a method and device for feedback suppression of sound boxes. Background technique [0002] During the use of various types of existing sound amplification equipment, if the operation of increasing the volume of the microphone is performed, the sound from the speaker equipment is transmitted to the microphone and then emitted through the speaker again, causing howling. The occurrence of howling phenomenon not only affects the sound quality, limits the volume expansion of the microphone sound, but also makes the sound picked up by the microphone unable to be reproduced well. Moreover, the deep howling phenomenon will also cause the sound amplification equipment to be burned, resulting in losses. It can be seen from the above that the howling phenomenon is because the sound signal picked up by the microphone is picked up again after it is sent out from the speaker equipment. Sinc...

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Application Information

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IPC IPC(8): H04R1/02H04R1/22
CPCH04R1/02H04R1/22H04R2430/01
Inventor 伍国彬
Owner 深圳市创锐智汇科技有限公司
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