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Stereo encoding method and stereo encoder

A coding method and stereo technology, applied in the field of audio coding and decoding, can solve the problems of stereo audio signal image instability, drift, regardless of the type of stereo audio signal, etc.

Active Publication Date: 2019-10-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] When the existing stereo coding method encodes the stereo audio signal, the signal type of the stereo audio signal is not considered, which will cause the sound image of the synthesized stereo audio signal after encoding to be unstable and drift, and the coding quality has room for improvement.

Method used

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Embodiment Construction

[0191] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0192] The stereo encoding method provided by the embodiment of the present invention can be implemented by a computer, specifically, a personal computer, a tablet computer, a mobile phone, or a wearable device. Wherein, dedicated hardware may be installed on the computer to implement the stereo encoding method provided in the embodiment of the present invention, and dedicated software may also be installed to implement the stereo encoding method provided in the emb...

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Abstract

The invention discloses a stereo encoding method and a stereo encoder. When performing stereo encoding, the channel combination coding scheme of the current frame is determined first, and then the quantized channel combination ratio of the current frame is obtained according to the determined channel combination coding scheme. factor and the encoding index of the quantized channel combination scale factor, thereby improving the encoding quality.

Description

technical field [0001] The invention relates to audio codec technology, in particular to a stereo coding method and a stereo coder. Background technique [0002] As the quality of life improves, people's demand for high-quality audio continues to increase. Compared with monophonic audio, stereo audio has a sense of orientation and distribution of each sound source, which can improve the clarity, intelligibility and presence of information, so it is favored by people. [0003] The time-domain stereo codec technology is an existing and commonly used stereo codec technology. In the existing time-domain stereo coding technology, the input signal is usually down-mixed into two channels of mono signals in the time domain, for example, a sum / difference (M / S: Mid / Sid) coding method. First, the left and right channels are downmixed into a central channel (Mid channel) and a side channel (Side channel), where the Mid channel is 0.5*(L+R), which represents the relevant information be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/008G10L19/032
CPCG10L19/008G10L19/032
Inventor 王宾李海婷苗磊
Owner HUAWEI TECH CO LTD
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