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41. 发明申请

US20110178798A1 ADAPTIVE AMBIENT SOUND SUPPRESSION AND SPEECH TRACKING 有权
标题翻译：自适应声音抑制和语音跟踪
公开(公告)号：US20110178798A1
公开(公告)日：2011-07-21
申请号：US12690827
申请日：2010-01-20
申请人： Jason Flaks , Ivan Tashev , Duncan McKay , Xudong Ni , Robert Heitkamp , Wei Guo , John Tardif , Leo Shing , Michael Baseflug
发明人： Jason Flaks , Ivan Tashev , Duncan McKay , Xudong Ni , Robert Heitkamp , Wei Guo , John Tardif , Leo Shing , Michael Baseflug
IPC分类号： G10L21/02
CPC分类号： H04S3/008 , G10L21/0208 , G10L21/0272 , G10L2021/02085 , G10L2021/02166
摘要： A device for suppressing ambient sounds from speech received by a microphone array is provided. One embodiment of the device comprises a microphone array, a processor, an analog-to-digital converter, and memory comprising instructions stored therein that are executable by the processor. The instructions stored in the memory are configured to receive a plurality of digital sound signals, each digital sound signal based on an analog sound signal originating at the microphone array, receive a multi-channel speaker signal, generate a monophonic approximation signal of the multi-channel speaker signal, apply a linear acoustic echo canceller to suppress a first ambient sound portion of each digital sound signal, generate a combined directionally-adaptive sound signal from a combination of each digital sound signal by a combination of time-invariant and adaptive beamforming techniques, and apply one or more nonlinear noise suppression techniques to suppress a second ambient sound portion of the combined directionally-adaptive sound signal.
摘要翻译：提供了一种用于抑制由麦克风阵列接收的语音的环境声音的装置。该设备的一个实施例包括麦克风阵列，处理器，模数转换器和包含可由处理器执行的存储在其中的指令的存储器。存储在存储器中的指令被配置为接收多个数字声音信号，基于源自麦克风阵列的模拟声音信号的每个数字声音信号，接收多声道扬声器信号，产生多声道扬声器信号的单声道近似信号，应用线性声学回声消除器来抑制每个数字声音信号的第一环境声音部分，通过时不变和自适应波束成形技术的组合从每个数字声音信号的组合产生组合的定向自适应声音信号并且应用一个或多个非线性噪声抑制技术来抑制组合的定向自适应声音信号的第二环境声音部分。

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