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Cracking sound elimination method and device of audio signal, storage medium and terminal

An audio signal and broken sound technology, which is applied in the direction of frequency response correction, etc., can solve the problems of unable to meet the user's loudness requirements, audio signal drowning, and low audio signal loudness, so as to improve the call and music playback experience, eliminate broken sound, Avoid Distortion Effects

Active Publication Date: 2020-12-29
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method solves the problem of broken sound, the loudness of the audio signal played by the speaker becomes smaller, which cannot meet the loudness requirement of the user.
If in a noisy environment, the audio signal played by this method will often be submerged by noise, resulting in the loss of audio signal information, seriously affecting the user experience

Method used

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  • Cracking sound elimination method and device of audio signal, storage medium and terminal
  • Cracking sound elimination method and device of audio signal, storage medium and terminal
  • Cracking sound elimination method and device of audio signal, storage medium and terminal

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Embodiment Construction

[0039] As mentioned in the background art, the prior art cannot effectively eliminate the crackling sound of the audio signal without affecting the loudness.

[0040]The inventors of the present application have found through analysis that the reasons for the broken sound of the audio external speaker terminal include digital signal distortion, analog signal distortion, and background distortion caused by overpowering of the loudspeaker. Specifically, the "zizi" sound is produced when the digital signal has clipping distortion. If the digital signal is not distorted, after the digital signal is input to the audio power amplifier of the analog signal processing part, if the input digital signal exceeds the threshold of the audio power amplifier, the analog signal will be distorted, and finally a harsh "pa" sound will be produced. When speakers are overpowered, bottoming distortion occurs.

[0041] Among the existing algorithms, the clipping algorithm can process the digital si...

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Abstract

The invention discloses a cracking sound elimination method and device of an audio signal, a storage medium and a terminal. The method comprises the following steps: acquiring current frame data to beprocessed from the received audio signal; and performing soft suppression processing on the part, of which the digital signal amplitude exceeds the maximum output threshold of the digital signal, inthe current frame data to be processed so as to obtain the processed current frame data, and maintaining the time domain waveform of the current frame data before and after the soft suppression processing to be locally relatively unchanged. Through the scheme of the invention, on the premise of keeping the maximum loudness unchanged, the cracking sound is eliminated, the tone quality is improved,and the call and music playing experience of the terminal device is improved.

Description

technical field [0001] The present invention relates to the technical field of speech processing, and in particular to a method and device for eliminating sound breakage of audio signals, a storage medium, and a terminal. Background technique [0002] At the receiving end of the audio playback terminal, when the volume is low, the speaker normally plays the audio signal. When the volume is gradually increased, the loudspeaker plays an audio signal with a larger volume (that is, the loudness refers to the strength of the sound felt by the human ear, which is a subjective perception of the volume of the sound), and sometimes people will hear the broken sound. sound, such as a mutation of the harsher "pa". Breaking sound is an additional audio signal in addition to the audio source signal, which is neither a voice signal nor a music signal, which will interfere with the voice signal or music and sound harsh. In addition, if a customer hears a broken sound when purchasing a ne...

Claims

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Application Information

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IPC IPC(8): H04R3/04
CPCH04R3/04
Inventor 雍雅琴潘思伟陈皓罗本彪董斐纪伟林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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