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Multi-channel audio signal coding method and device

An audio signal coding and audio signal technology, applied in the field of audio coding and decoding, can solve the problems of waste of resources, insufficient coding bits, poor quality, redundant coding bits, etc., and achieve the effect of quality assurance

Pending Publication Date: 2022-01-18
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method will affect the quality of the encoded audio signal
For example, in the case of large energy differences between channels, the above energy equalization method will cause insufficient coding bits of channel frames with large energy / amplitude and poor quality, and redundant coding bits of channel frames with low energy will waste resources.
In the case of low bit rate, the total available bits are tight and the quality of channel frames with high energy / amplitude is significantly reduced

Method used

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  • Multi-channel audio signal coding method and device
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  • Multi-channel audio signal coding method and device

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Embodiment Construction

[0076] The terms "first", "second" and the like involved in the embodiments of the present application are only used for the purpose of distinguishing and describing, and cannot be interpreted as indicating or implying relative importance, nor can they be understood as indicating or implying order. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, of a sequence of steps or elements. A method, system, product or device is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to the process, method, product or device.

[0077] It should be understood that in this application, "at least one (item)" means one or more, and "multiple" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that there can be three types of relationships, for exam...

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Abstract

The invention provides a multi-channel audio signal coding method and device. According to the embodiment of the invention, audio signals of P sound channels of a current frame of a multi-sound-channel audio signal are acquired, wherein P is a positive integer greater than 1; according to the respective energy / amplitude and the available bit number of the audio signals of the P sound channels, the respective bit numbers of K sound channel pairs are determined; and the audio signals of the P sound channels are coded according to the respective bit numbers of the K sound channel pairs to obtain a coding code stream. The coding quality is improved.

Description

technical field [0001] The present application relates to audio codec technology, in particular to a multi-channel audio signal coding method and device. Background technique [0002] With the continuous development of multimedia technology, audio has been widely used in multimedia communication, consumer electronics, virtual reality, human-computer interaction and other fields. Audio coding is one of the key technologies of multimedia technology. Audio coding realizes the compression of data volume by removing redundant information in the original audio signal, so as to facilitate storage or transmission. [0003] Multi-channel audio coding is the coding of more than two channels, such as 5.1-channel, 7.1-channel, 7.1.4-channel, 22.2-channel, etc. By performing multi-channel signal screening, pairing, stereo processing, multi-channel side information generation, quantization processing, entropy coding processing and stream multiplexing on multiple original audio signals, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/008
CPCG10L19/008G10L19/002G10L25/21
Inventor 王智丁建策王宾李海婷王喆
Owner HUAWEI TECH CO LTD