发明申请
- 专利标题: Methods for Audio Signal Transient Detection and Decorrelation Control
- 专利标题(中): 音频信号瞬态检测和相关控制方法
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申请号: US14766957申请日: 2014-01-22
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公开(公告)号: US20160005405A1公开(公告)日: 2016-01-07
- 发明人: Kuan-Chieh YEN , Vinay MELKOTE , Grant A. DAVIDSON
- 申请人: DOLBY LABORATORIES LICENSING CORPORATION
- 申请人地址: US CA San Francisco
- 专利权人: Dolby Laboratories Licensing Corporation
- 当前专利权人: Dolby Laboratories Licensing Corporation
- 当前专利权人地址: US CA San Francisco
- 国际申请: PCT/US2014/012597 WO 20140122
- 主分类号: G10L19/008
- IPC分类号: G10L19/008 ; H04S5/00
摘要:
Some audio processing methods may involve receiving audio data corresponding to a plurality of audio channels and determining audio characteristics of the audio data, which may include transient information. An amount of decorrelation for the audio data may be based, at least in part, on the audio characteristics. If a definite transient event is determined, a decorrelation process may be temporarily halted or slowed. Determining transient information may involve evaluating the likelihood and/or the severity of a transient event. In some implementations, determining transient information may involve evaluating a temporal power variation in the audio data. Explicit transient information may or may not be received with the audio data, depending on the implementation. Explicit transient information may include a transient control value corresponding to a definite transient event, a definite non-transient event or an intermediate transient control value.