Howling suppression method and device and computer readable storage medium

A signal and fragment technology, applied in the field of audio processing, can solve problems such as poor howling suppression effect, burning power amplifier equipment and speakers, affecting sound pickup and playback effects, etc.

Active Publication Date: 2019-08-30
深圳市湾区通信技术有限公司
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Problems solved by technology

[0002] In the application fields such as audio system, because the microphone and the speaker are in the same environment, the distance between them is relatively close, the sound picked up by the microphone is amplified by the power amplifier and played by the speaker, the sound is picked up by the microphone again, and then played by the speaker after being amplified by the power amplifier Out of this, positive feedback is formed to cause sound howling, and the harsh sharp sound played by the speaker seriously affects the effect of picking up and playing, and sometimes

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  • Howling suppression method and device and computer readable storage medium
  • Howling suppression method and device and computer readable storage medium
  • Howling suppression method and device and computer readable storage medium

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Embodiment Construction

[0040] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] The main solution of the embodiment of the present invention is:

[0042] When the audio input signal is acquired, an envelope detection signal corresponding to the howling segment in the audio input signal is acquired;

[0043] When the detection value of the envelope detection signal is less than or equal to a first preset value and greater than or equal to a second preset value, frequency shift processing is performed on the howling segment, and the first preset value is greater than or equal to a second preset value. equal to the second preset value;

[0044] When the detection value of the envelope detection signal is greater than the first preset value, performing the frequency shift processing and negative feedback processing on the howling segment;

[0045] Outputting audio information according to th...

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Abstract

The invention discloses a howling suppression method, and the method comprises the following steps: obtaining an envelope detection signal corresponding to a howling segment in an audio input signal when the audio input signal is obtained; when the detection value of the envelope detection signal is less than or equal to a first preset value and greater than or equal to a second preset value, performing frequency shift processing on the howling segment; when the detection value of the envelope detection signal is greater than the first preset value, performing frequency shift processing and negative feedback processing on the howling segment; and outputting audio information according to the howling segment subjected to the frequency shift processing or the howling segment subjected to thefrequency shift processing and the negative feedback processing. The invention further discloses a howling suppression device and a storage medium, frequency shift processing and negative feedback processing are conducted on howling fragments according to changes of envelope detection signal detection values, formation of positive feedback feedback is destroyed, howling of sound is suppressed, and the howling suppression effect is better.

Description

technical field [0001] The invention relates to the technical field of audio processing, in particular to a howling suppression method, device and computer-readable storage medium. Background technique [0002] In the application fields such as audio system, because the microphone and the speaker are in the same environment, the distance between them is relatively close, the sound picked up by the microphone is amplified by the power amplifier and played by the speaker, the sound is picked up by the microphone again, and then played by the speaker after being amplified by the power amplifier Out of this, positive feedback is formed to cause sound howling, and the harsh sharp sound played by the speaker seriously affects the effect of picking up and playing, and sometimes even burns the power amplifier and the speaker, especially when the distance between the microphone and the speaker This effect is especially pronounced in recent times. [0003] At present, the sound howli...

Claims

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Application Information

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IPC IPC(8): H04R3/04
CPCH04R3/04H04R2430/03
Inventor 王建忠高云辉
Owner 深圳市湾区通信技术有限公司
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