Audio signal processing method and apparatus

A voice, audio and signal technology, applied in the field of communication, can solve the problems affecting the auditory quality of the signal and the echo of the signal.

Active Publication Date: 2016-02-17
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] However, the inventors have found that if the voice and audio signal is a signal with a rising edge or a falling edge, this method of restoring the noise component of the voice and audio signal will cause the signal obtained after the voice and audio signal recovers the noise component to have an echo, which will affect the recovery of the noise component. The auditory quality of the signal

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  • Audio signal processing method and apparatus
  • Audio signal processing method and apparatus

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Embodiment Construction

[0090] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0091] see figure 1 , which is a flowchart of a method for recovering noise components of speech and audio signals according to an embodiment of the present invention, the method comprising:

[0092] Step 101: receiving a code stream, decoding the code stream to obtain a voice and audio signal;

[0093] Wherein, how to decode the code stream to obtain the voice and audio signals will not be repeated here.

[0094] Step 102: Determine a first speech and audio s...

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Abstract

The embodiments of the invention disclose a method and apparatus for recovering noise components of audio signals, and provide an audio signal processing method and apparatus. The method comprises the following steps: receiving a code stream, and decoding the code stream to obtain the audio signals; according to the audio signals, determining first audio signals; determining a symbol of each sampling value in the first audio signals and an amplitude value of each sampling value; determining an adaptive normalization length; according to the adaptive normalization length and the amplitude value of each sampling value, determining an adjustment amplitude value of each sampling value; and according to the symbol of each sampling value and the adjustment amplitude value of each sampling value, determining the second audio signals. According to the embodiments of the invention, for the audio signals with rising edges or falling edges, when the noise components are recovered, echoes are not caused to the signals after the noise components of the audio signals are recovered, and the hearing quality of the signals after the noise components of the audio signals are recovered is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for processing voice and audio signals. Background technique [0002] In order to achieve better auditory quality, at present, when an electronic device decodes encoded information of a speech and audio signal, it restores noise components to the decoded speech and audio signal. [0003] At present, when an electronic device restores the noise component of a speech and audio signal, it is generally implemented by adding a random noise signal to the speech and audio signal. Specifically, the voice and audio signal and the random noise signal are weighted to obtain the signal after the noise component of the voice and audio signal is restored; wherein, the voice and audio signal can be a time domain signal, a frequency domain signal or an excitation signal, or a low frequency signal or a high frequency signal. frequency signal etc. [0004] However, the inven...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/02G10L19/028
CPCG10L19/26G10L21/0316G10L21/038G10L19/028G10L21/02G10L19/012G10L19/167
Inventor 刘泽新苗磊
Owner HUAWEI TECH CO LTD
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