Background noise generation method and device

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: 2016-06-29
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

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  • Background noise generation method and device
  • Background noise generation method and device
  • Background noise generation method and device

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Embodiment Construction

[0063] The exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. Rather, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0064] According to the statistics of traditional telephone services, during a call, the actual speaking time of one user will not exceed 40% of the entire call time. When the user is not speaking, if the electronic device as the sender continues to encode and send encoded data, it will cause The call resources are wasted. Therefore, the electronic device needs to detect whether t...

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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 field of signal processing technology, 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 not talking. At this time, the encoder in the call device used by the non-speaking user does not encode and does not send encoded data to reduce the average bit 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 period of background noise. Summary of the invention [0004] In order to solve the problems in the related art, the present disclosure provides a background noise generation method and device. [0005] According to a first aspect of the embodiments of the present disclosure, a background noise generation method is provided, the method including: [0006] Dete...

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Application Information

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Patent Type & Authority Applications(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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