Howling suppression method, device and computer-readable storage medium

Abstract

The invention discloses a howling suppression method, which includes the following steps: when an audio input signal is acquired, acquiring an envelope detection signal corresponding to a howling segment in the audio input signal; 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; when the detection value of the envelope detection signal is When the value is greater than the first preset value, perform the frequency shift processing and negative feedback processing on the howling segment; according to the howling segment after the frequency shift processing or the frequency shift processing and the negative feedback The processed howling segment outputs audio information. The invention also discloses a howling suppressing device and a storage medium. According to the change of the detection value of the envelope detection signal, frequency shift processing and negative feedback processing are performed on the howling segment, which destroys the formation of positive feedback and suppresses the sound Howling, and the suppression effect of howling 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...

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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 even burns the power amplifier and the speaker, especially when the distance between the microphone and the speaker This effect is especially pronounced when the

[0003] At present, the sound howling is generally suppressed by reducing the sensitivity of the microphone, reducing the volume of the speaker, increasing the distance between the microphone and the speaker, and adjusting the angle and directivity between the microphone and the speaker. Due to the limitations of equipment parameters and venues in practical applications, the suppression effect on howling is poor

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