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1. 发明申请

WO2007046070A1 ACOUSTIC ECHO CANCELLER 审中-公开
公开(公告)号：WO2007046070A1
公开(公告)日：2007-04-26
申请号：PCT/IB2006/053856
申请日：2006-10-19
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , RIERA-PALOU, Felip , ROOVERS, David Antoine Christian Marie , JANSE, Cornelis Pieter , MERKS, Ivo Leon Diane Marie
发明人： RIERA-PALOU, Felip , ROOVERS, David Antoine Christian Marie , JANSE, Cornelis Pieter , MERKS, Ivo Leon Diane Marie
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： An acoustic echo cancellation device (1) for canceling an echo in a microphone signal (z) in response to a far-end signal (x) comprises: an adaptive filter unit (10) arranged for filtering the far-end signal (x) so as to produce an echo cancellation signal (y), - a combination unit (12) arranged for combining the echo cancellation signal (y) with the microphone signal (z) so as to produce a residual signal (r), and a post-processor unit (13) arranged for substantially removing any remaining echoes from the residual signal. In accordance with the invention, the device further comprises: - a near-end pitch estimation unit (18) arranged for estimating the pitch of any near-end signal (s) contained in the microphone signal (z) and for controlling the post-processor unit (13) in dependence of the estimated pitch such that harmonics of the estimated pitch may be substantially preserved. The control unit may further be arranged for controlling the post-processor unit (13) in dependence of the estimated pitch of the residual signal in addition to the estimated pitch of the residual signal.
摘要翻译：用于响应于远端信号（x）消除麦克风信号（z）中的回波的声学回声消除装置（1）包括：自适应滤波器单元（10），被布置为滤波远端信号（x）以产生回波消除信号（y）， - 组合单元（12），被布置成将回波消除信号（y）与麦克风信号（z）组合以产生残余信号（r）处理器单元（13），被布置成基本上从剩余信号中去除任何剩余的回波。根据本发明，该装置还包括： - 近端音调估计单元（18），被布置用于估计麦克风信号（z）中包含的任何近端信号的音高，处理器单元（13），以使得可以基本上保持估计音调的谐波。控制单元还可以被布置成除了剩余信号的估计音调之外，还根据所估计的残余信号的音调来控制后处理器单元（13）。

2. 发明申请

WO2006027707A1 TELEPHONY DEVICE WITH IMPROVED NOISE SUPPRESSION 审中-公开
标题翻译：具有改进噪声抑制的电话设备
公开(公告)号：WO2006027707A1
公开(公告)日：2006-03-16
申请号：PCT/IB2005/052667
申请日：2005-08-11
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , BELT, Harm Jan Willem , JANSE, Cornelis Pieter , MERKS, Ivo Leon Diane Marie
发明人： BELT, Harm Jan Willem , JANSE, Cornelis Pieter , MERKS, Ivo Leon Diane Marie
IPC分类号： G10L21/02
CPC分类号： G10L21/0208 , G10L2021/02165 , G10L2021/02166
摘要： The present invention relates to a telephony device comprising a near-mouth microphone (M1) for picking up an input acoustic signal including the speaker's voice signal (S1) and an unwanted noise signal (N1,D1), a far-mouth microphone (M2) for picking up an unwanted noise signal (N2,D2) in addition to the near-end speaker's voice signal (S2), said speaker's voice signal being at a lower level than the near-mouth microphone, and an orientation sensor for measuring an orientation indication of said mobile device. The telephony device further comprises an audio processing unit comprising an adaptive beamformer (BF) coupled to the near-mouth and far-mouth microphones, including spatial filters for spatially filtering the input signals (zl,z2) delivered by the two microphones, and a spectral post-processor (SPP) for post-processing the signal delivered by the beam-former so as to separate the desired voice signal from the unwanted noise signal so as to deliver the output signal (y).
摘要翻译：电话装置技术领域本发明涉及一种电话装置，包括用于拾取包括扬声器的语音信号（S1）和不需要的噪声信号（N1，D1）的输入声信号的近嘴麦克风（M1），远端麦克风（M2 ），用于拾取除了近端扬声器的语音信号（S2）之外的不需要的噪声信号（N2，D2），所述扬声器的语音信号处于比近嘴麦克风更低的水平，以及用于测量所述移动设备的方向指示。电话设备还包括音频处理单元，该音频处理单元包括耦合到近嘴和远口麦克风的自适应波束形成器（BF），包括用于空间滤波由两个麦克风传送的输入信号（z1，z2）的空间滤波器，以及频谱后处理器（SPP），用于对由波束形成器传送的信号进行后处理，以将期望的语音信号与不需要的噪声信号分离，从而传送输出信号（y）。

3. 发明授权

EP1941712B1 ACOUSTIC ECHO CANCELLER 有权转让
标题翻译：声学回声灭火器
公开(公告)号：EP1941712B1
公开(公告)日：2010-02-24
申请号：EP06809648.6
申请日：2006-10-19
申请人： Koninklijke Philips Electronics N.V.
发明人： RIERA-PALOU, Felip , ROOVERS, David Antoine Christian Marie , JANSE, Cornelis Pieter , MERKS, Ivo Leon Diane Marie
IPC分类号： H04M9/08
CPC分类号： H04M9/082

4. 发明公开

EP1941712A1 ACOUSTIC ECHO CANCELLER 有权转让
标题翻译：声学回声灭火器
公开(公告)号：EP1941712A1
公开(公告)日：2008-07-09
申请号：EP06809648.6
申请日：2006-10-19
申请人： Koninklijke Philips Electronics N.V.
发明人： RIERA-PALOU, Felip , ROOVERS, David Antoine Christian Marie , JANSE, Cornelis Pieter , MERKS, Ivo Leon Diane Marie
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： An acoustic echo cancellation device (1) for canceling an echo in a microphone signal (z) in response to a far-end signal (x) comprises: an adaptive filter unit (10) arranged for filtering the far-end signal (x) so as to produce an echo cancellation signal (y), - a combination unit (12) arranged for combining the echo cancellation signal (y) with the microphone signal (z) so as to produce a residual signal (r), and a post-processor unit (13) arranged for substantially removing any remaining echoes from the residual signal. In accordance with the invention, the device further comprises: - a near-end pitch estimation unit (18) arranged for estimating the pitch of any near-end signal (s) contained in the microphone signal (z) and for controlling the post-processor unit (13) in dependence of the estimated pitch such that harmonics of the estimated pitch may be substantially preserved. The control unit may further be arranged for controlling the post-processor unit (13) in dependence of the estimated pitch of the residual signal in addition to the estimated pitch of the residual signal.

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