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Method, system and medium for adding extra information in lc3 audio code stream

A technology of extra information and audio coding, applied in the field of audio coding and decoding, to improve the efficiency of bandwidth usage and avoid waste

Active Publication Date: 2022-05-17
BEIJING BAIRUI INTERNET TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there are unused and wasted bits scattered between frames

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  • Method, system and medium for adding extra information in lc3 audio code stream
  • Method, system and medium for adding extra information in lc3 audio code stream

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Embodiment Construction

[0015] 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.

[0016] The terms "first", "second", "third" and "fourth" (if any) in the specification and claims of this application and the above drawings are used to distinguish similar objects, and do not necessarily use Used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstan...

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Abstract

The application discloses a method, system and medium for adding additional information in LC3 audio code stream, belonging to the technical field of audio codec. The method includes: obtaining unused bit space in the LC3 audio coding process, including: obtaining a single-bit unused space of the current coded frame in the LC3 audio coding process, where the single-bit unused space is the residue of the current coded frame in the LC3 audio coding process The difference between the estimated length of the difference coded bits and the actual length of the residual coded bits; obtain the multi-bit unused space of the current coded frame during the LC3 audio coding process, and the multi-bit unused space is the unused space of the current coded frame during the LC3 audio coding process Residual space; and adding extra information in the LC3 audio coding process into the unused bit space for coding. The application of the present application transmits extra data through the unused bit space, avoiding the waste of bits, and improving the bandwidth utilization efficiency of encoding.

Description

technical field [0001] The invention relates to the technical field of audio codec, in particular to a method, system and medium for adding additional information in LC3 audio code stream. 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 sound quality and coding gain, and no paten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/002
CPCG10L19/002G10L19/02G10L19/018G10L19/24
Inventor 王尧李强叶东翔朱勇
Owner BEIJING BAIRUI INTERNET TECH CO LTD