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Audio coding and decoding mode determination method and related products

A technology for audio coding and determining methods, which is applied in the field of audio coding and decoding, and can solve problems such as coding quality degradation, energy loss, and small signal energy

Active Publication Date: 2019-02-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The inventors of the present application have found through research and practice that when using traditional time-domain stereo coding techniques, sometimes the energy of the main signal is extremely small or even lacks energy, which leads to a decline in the final coding quality

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  • Audio coding and decoding mode determination method and related products
  • Audio coding and decoding mode determination method and related products
  • Audio coding and decoding mode determination method and related products

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Embodiment Construction

[0105] Embodiments of the present application are described below with reference to the drawings in the embodiments of the present application.

[0106] The terms "comprising" and "having" and any variations thereof in the description and claims of the present application and the above drawings are intended to cover a non-exclusive inclusion. For example, a process, method, system, or product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or optionally further include For other steps or units inherent in these processes, methods, products or apparatuses. In addition, terms such as "first", "second", "third" and "fourth" are used to distinguish different objects, rather than to describe a specific order.

[0107] It should be noted that due to the time-domain scenarios targeted by the solutions in the embodiments of the present application, the time-domain signal may be referred...

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Abstract

Embodiments of the invention disclose an audio coding and decoding mode determination method and related products. The audio coding and decoding mode determination method includes the steps: determining a sound channel combination scheme of a current frame, wherein the determined sound channel combination scheme of the current frame is one of a plurality of sound channel combination schemes; and according to the sound channel combination scheme of the previous frame and the sound channel combination scheme of the current frame, determining a coding mode of the current frame, wherein the codingmode of the current frame is one of a plurality of coding modes. The technical scheme of the audio coding and decoding mode determination method is advantageous for improving the coding quality.

Description

technical field [0001] The present application relates to the field of audio codec technology, and in particular to a method for determining an audio codec mode and related products. 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] Parametric stereo codec technology is a common stereo codec technology for compressing multi-channel signals by converting stereo signals into mono signal and spatial perception parameters. However, since the parametric stereo codec technology usually needs to extract spatial perception parameters in the frequency domain, time-frequency transformation is required, which makes the delay of the entire codec relatively large. Therefore, the time-domain s...

Claims

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Application Information

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IPC IPC(8): G10L19/22G10L19/18
CPCG10L19/18G10L19/22G10L19/008H04S1/007H04S2420/03G10L19/20
Inventor 王宾李海婷苗磊
Owner HUAWEI TECH CO LTD