专利名称：Filter bank optimization for acoustic echo
cancellation
发明人：Qin Li,Wei-ge Chen,Chao He申请号：US11784893申请日：20070410公开号：US08155304B2公开日：20120410
专利附图：
摘要：A communications device is presented for providing bi-directional audiocommunications between a near-end user and a far-end user via a bidirectional
communications channel. The communications device includes an adaptive echo canceller
receiving a near-end audio signal and a far-end audio signal and providing an echo-canceled near-end audio signal for transmission to the far-end user via the
communications channel. The adaptive echo canceller includes a first bank of analysisfilters for filtering the near-end audio signal, a second bank of analysis filters for filteringthe far-end audio signal, and a bank of synthesis filters for filtering sub-band echo-canceled signals generated within the adaptive echo canceller. The first and second filterbanks have a frequency response optimized to reduce echo residual gain.
申请人：Qin Li,Wei-ge Chen,Chao He
地址：Redmond WA US,Sammamish WA US,Redmond WA US
国籍：US,US,US
代理机构：Mayer & WIlliams P.C.
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