发明授权
US09106196B2 Sound field spatial stabilizer with echo spectral coherence compensation
有权
具有回波光谱相干补偿的声场空间稳定器
- 专利标题: Sound field spatial stabilizer with echo spectral coherence compensation
- 专利标题(中): 具有回波光谱相干补偿的声场空间稳定器
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申请号: US13922970申请日: 2013-06-20
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公开(公告)号: US09106196B2公开(公告)日: 2015-08-11
- 发明人: Phillip Alan Hetherington
- 申请人: QNX Software Systems Limited
- 申请人地址: unknown Waterloo, Ontario
- 专利权人: 2236008 Ontario Inc.
- 当前专利权人: 2236008 Ontario Inc.
- 当前专利权人地址: unknown Waterloo, Ontario
- 代理机构: Brinks Gilson & Lione
- 主分类号: H04B15/00
- IPC分类号: H04B15/00 ; H03G3/20 ; H04R3/00 ; G10L21/0208 ; G10L21/0216
摘要:
In a system and method for maintaining the spatial stability of a sound field a balance gain may be calculated for two or more microphone signals. The balance gain may be associated with a spatial image in the sound field. Signal values may be calculated for each of the microphone. The signal values may be signal estimates or signal gains calculated to improve a characteristic of the microphone signals. The differences between the signal values associated with each microphone signal may be limited although some difference between signal values may be allowable. One or more microphone signals are adjusted responsive to the two or more balance gains and the signal gains to maintain the spatial stability of the sound field. The adjustments of one or more microphone signals may include mixing of two or more microphone. The signal gains are applied to the two or more microphone signals.
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