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A method and device for eliminating noise and electronic equipment

A technology for eliminating noise and sub-units, applied in speech analysis, instruments, etc., can solve the problems of reducing the user's auditory experience, producing pop noise, etc., to achieve the effect of improving the auditory experience

Active Publication Date: 2020-02-07
BEIJING QIYI CENTURY SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present application proposes a method and device for eliminating noise, as well as electronic equipment, to solve the technical problem of popping noise generated during the process of switching between different music, switching between different code stream video data, etc., thereby reducing the user's auditory experience.

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  • A method and device for eliminating noise and electronic equipment
  • A method and device for eliminating noise and electronic equipment
  • A method and device for eliminating noise and electronic equipment

Examples

Experimental program
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Embodiment 1

[0081] This embodiment provides a method for eliminating noise, which eliminates the first sudden change position (that is, sudden change position B) when the silent audio sampling point existing in the audio sampling signal is converted to the non-silent audio sampling point conversion, please refer to Figure 6 , showing a schematic flow chart of the method, the method comprising:

[0082] Step S21: Acquiring an audio sampling signal, the audio sampling signal including N+1 continuous audio sampling points;

[0083] Step S22: taking the difference between every two adjacent audio sampling points in the audio sampling signal to obtain N first differences, and performing an absolute value operation on each of the first differences to obtain N second differences value;

[0084] The difference between every two adjacent audio sampling points in the audio sampling signal is taken, and the absolute value operation is taken to judge the position of the waveform mutation. Specific...

Embodiment 2

[0095] This embodiment provides another method for eliminating noise, which is to eliminate the second sudden change position (that is, sudden change position A) when converting the non-silent audio sampling point to the silent audio sampling point existing in the audio sampling signal, please refer to Figure 7 , showing a schematic flow chart of the method, the method comprising:

[0096] Step S31: Acquiring an audio sampling signal, the audio sampling signal including N+1 continuous audio sampling points;

[0097] Step S32: taking the difference between every two adjacent audio sampling points in the audio sampling signal to obtain N first differences, and performing an absolute value operation on each of the first differences to obtain N second differences value;

[0098] Step S33: Determine whether each second difference is greater than a preset first threshold, and determine that the two audio sampling points corresponding to the second difference greater than the first...

Embodiment 3

[0104] This embodiment provides another method for eliminating noise, which eliminates the second abrupt position when the non-silent audio sampling point existing in the audio sampling signal is converted to the silent audio sampling point, and eliminates the silent audio existing in the audio sampling signal Eliminate the position of the first sudden change when converting a sample point to a non-silent audio sample point, see Figure 8 , showing a schematic flow chart of the method, the method comprising:

[0105] Step S41: Acquiring an audio sampling signal, the audio sampling signal including N+1 continuous audio sampling points;

[0106] Step S42: taking the difference between every two adjacent audio sampling points in the audio sampling signal to obtain N first differences, and performing an absolute value operation on each of the first differences to obtain N second differences value;

[0107] Step S43: Judging whether each second difference is greater than a preset...

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Abstract

The present invention provides a method and device for eliminating noise and an electronic device. It is determined whether the obtained audio sampling signals have non-mute audio sampling points and an abrupt change position between mute audio sampling points at transition or not, and if obtained audio sampling signals have non-mute audio sampling points and the abrupt change position between mute audio sampling points at transition, a smooth filtering process of the audio sampling signals is performed to eliminate the abrupt change position, namely eliminate the popping noise generated in the process of switching different music and switching different code stream video data, so that the user's hearing experience is improved.

Description

technical field [0001] The present application relates to the field of audio data processing, more specifically, to a method and device for eliminating noise and electronic equipment. Background technique [0002] During the process of pausing music playback, starting music playback, switching between different music, and switching video data of different streams, audio waveform discontinuity will occur. For example, when switching video data of different code streams, it takes a certain amount of time to load the audio and video streams, and there may be a few seconds of empty field in the middle. Therefore, during the switching process, the played audio data involves non-silent audio sampling points to silent audio. Conversion of sample points and conversion of silent audio sample points to non-silent audio sample points. Among them, when the non-silent audio sampling point is converted to the silent audio sampling point, the audio waveform is as follows figure 1 As show...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L21/0332G10L21/0208G10L25/78
CPCG10L21/02G10L21/0332G10L25/78G10L2025/783
Inventor 孙晨飞
Owner BEIJING QIYI CENTURY SCI & TECH CO LTD