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Method and system for determining audio coding rate

A coding rate and audio coding technology, applied in speech analysis, instruments, etc., can solve problems such as low compression efficiency, high coding rate, equipment interference, etc., to avoid waste and reduce coding rate.

Pending Publication Date: 2021-01-29
BEIJING BAIRUI INTERNET TECH CO LTD
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Problems solved by technology

[0006] In view of the problems existing in the prior art that the LC3 audio encoder has a relatively high encoding bit rate, a large proportion of air bandwidth, and low compression efficiency, there is a large interference between devices. This application proposes a method for determining the audio encoding bit rate Method, system, encoding method, storage medium and equipment

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  • Method and system for determining audio coding rate
  • Method and system for determining audio coding rate

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Embodiment Construction

[0022] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0023] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application and the above drawings are used to distinguish similar objects and not necessarily Describe a particular order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that th...

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Abstract

The invention discloses a method and system for determining an audio coding rate, a coding method, a storage medium and equipment, and belongs to the technical field of audio coding. The method for determining the audio encoding rate comprises the steps of acquiring a first normalized autocorrelation value of a current audio frame in a long-term post-filter of an encoder; determining a first coding rate corresponding to the current audio frame according to the first normalized autocorrelation value; obtaining a second normalized autocorrelation value of the current audio frame; and updating the first coding rate according to the second normalized autocorrelation value, and determining a coding rate corresponding to the current audio frame according to an updating result of the first codingrate. According to the invention, the corresponding encoding rate is determined according to the autocorrelation characteristic of the current audio frame to encode the current audio frame, the encoding rate in the encoding process is reduced, and the waste of the code rate is avoided.

Description

technical field [0001] The present application relates to the technical field of audio encoding processing, in particular to a method, system, encoding method, storage medium and equipment for determining an audio encoding bit rate. Background technique [0002] The current mainstream Bluetooth audio codecs include: SBC audio codec, which is mandated by the A2DP protocol and is the most widely used; AAC-LC audio codec, which has better sound quality and is widely used, and is supported by many mainstream mobile phones ; aptX series audio codec, its sound quality is good, but its code rate is very high, and it is Qualcomm's unique technology, relatively closed; LDAC audio codec, its sound quality is good, but its code rate is also high, and it is Sony's unique technology is also very closed. Based on the above reasons, the Bluetooth Sig of the Bluetooth International Alliance and many manufacturers launched the LC3 audio codec, which has the advantages of lower delay, higher...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/008G10L19/24G10L19/26
CPCG10L19/008G10L19/24G10L19/26
Inventor 朱勇李强王尧叶东翔
Owner BEIJING BAIRUI INTERNET TECH CO LTD
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