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Method and device for generating background noise

A background noise and noise generation technology, applied in the field of signal processing, can solve problems such as reducing the average bit rate, and achieve the effect of improving stability and comfort

Active Publication Date: 2018-10-12
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Problems solved by technology

At this time, the encoder in the communication device used by the non-speaking user does not encode and does not send encoded data, so as to reduce the average bit rate

Method used

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  • Method and device for generating background noise
  • Method and device for generating background noise
  • Method and device for generating background noise

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Embodiment Construction

[0063] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0064] According to statistics on traditional telephone services, during a call, the actual speaking time of one party user will not exceed 40% of the entire call time. The waste of call resources, therefore, the electronic device needs to detect whether the user is speaking. When it is detected that the user is not speaking, the electronic device will no longer encode or send encoded ...

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Abstract

The disclosure relates to a background noise generation method and device, and belongs to the technical field of signal processing. The method comprises the following steps of detecting whether code data of a voice frame is received or not; and generating a comfort noise generation (CNG) algorithm according to comfort noise and generating background noise according to preset noise if the code data is not received, wherein spectral distribution of the preset noise is the way that a negative correlation relation is formed between the frequency of a noise signal and the energy of the noise signal. By the background noise generation method, the problem of uncomfortable background noise heard by a user and generated according to white noise is solved, and the effect of improving the comfortableness of the background noise is achieved.

Description

technical field [0001] The present disclosure relates to the technical field of signal processing, and in particular to a method and device for generating background noise. Background technique [0002] During a call, most of the time the user on one end of the call is talking and the user on the other end is silent. At this time, the coder in the communication device used by the non-speaking user does not encode and does not send encoded data, so as to reduce the average code rate. [0003] In order for the speaking user to perceive that the call is still in progress, the decoder in the call device used by the user needs to generate a segment of background noise. Contents of the invention [0004] In order to solve the problems in related technologies, the present disclosure provides a method and device for generating background noise. [0005] According to a first aspect of an embodiment of the present disclosure, a method for generating background noise is provided, t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/58H04M19/00
CPCH04M1/58H04M19/00
Inventor 李敬吴子敬王林章
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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