Invention Grant
US09449603B2 Multi-channel audio encoder and method for encoding a multi-channel audio signal
有权
多声道音频编码器和多声道音频信号编码方法
- Patent Title: Multi-channel audio encoder and method for encoding a multi-channel audio signal
- Patent Title (中): 多声道音频编码器和多声道音频信号编码方法
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Application No.: US14498613Application Date: 2014-09-26
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Publication No.: US09449603B2Publication Date: 2016-09-20
- Inventor: David Virette , Yue Lang , Jianfeng Xu
- Applicant: Huawei Technologies Co., Ltd.
- Applicant Address: CN Shenzhen
- Assignee: Huawei Technologies Co., Ltd.
- Current Assignee: Huawei Technologies Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Leydig, Voit & Mayer, Ltd.
- Main IPC: G10L19/008
- IPC: G10L19/008 ; G10L19/02

Abstract:
The invention relates to a method for determining an encoding parameter for an audio channel signal of a multi-channel audio signal, the method comprising: determining a frequency transform of the audio channel signal; determining a frequency transform of a reference audio signal; determining inter channel differences for at least each frequency sub-band of a subset of frequency sub-bands, each inter channel difference indicating a phase difference or time difference between a band-limited signal portion of the audio channel signal and a band-limited signal portion of the reference audio signal in the respective frequency sub-band the inter-channel difference is associated to; determining a first average based on positive values of the inter-channel differences and determining a second average based on negative values of the inter-channel differences; and determining the encoding parameter based on the first average and on the second average.
Public/Granted literature
- US20150049872A1 MULTI-CHANNEL AUDIO ENCODER AND METHOD FOR ENCODING A MULTI-CHANNEL AUDIO SIGNAL Public/Granted day:2015-02-19
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