公开(公告)号：US09078057B2

公开(公告)日：2015-07-07

申请号：US13666101

申请日：2012-11-01

申请人： CSR Technology Inc.

发明人： Tao Yu ,  Rogerio G. Alves

IPC分类号： H04R3/00

CPC分类号： H04R3/005

摘要： The present invention relates to adaptive beamforming in audio systems. More specifically, aspects of the invention relate to a method for adaptively estimating a target sound signal by establishing a simulation model simulating an audio environment comprising: a plurality of spatially separated microphones, a target sound source, and a number of audio noise sources.

摘要翻译： 本发明涉及音频系统中的自适应波束形成。 更具体地，本发明的方面涉及通过建立模拟音频环境的模拟模型来自适应地估计目标声音信号的方法，包括：多个空间分离的麦克风，目标声源和多个音频噪声源。

公开(公告)号：US20140270219A1

公开(公告)日：2014-09-18

申请号：US13842911

申请日：2013-03-15

申请人： CSR TECHNOLOGY, INC.

发明人： Tao Yu ,  Rogerio G. Alves

IPC分类号： H04R3/00

CPC分类号： H04R3/002 ,  G10L21/0216 ,  G10L2021/02166 ,  H04R3/005 ,  H04R25/407 ,  H04R2225/43 ,  H04R2430/20

摘要： A method, apparatus, and manufacture for beamforming is provided. Parameters based on sets of pre-determined beamforming weights are stored. Each of the sets of pre-determined beamforming weights has a corresponding integral index number. Each input microphone signal is transformed to the frequency domain to provide a corresponding transformed signal. Each of the transformed signals includes a plurality of subbands. Next, an index number is determined representing an optimal set of beamforming weights for the transformed signals. Then, a set of beamforming weights is applied to each subband of each of the transformed signals to provide a weighted signal. The set corresponds to the determined index number. A time domain signal is then provided by combining each of the weighted signals.

摘要翻译： 提供了一种用于波束形成的方法，装置和制造。 存储基于预定波束成形权重集合的参数。 预定波束成形权重集合中的每一组具有对应的积分索引号。 每个输入麦克风信号被变换到频域以提供相应的变换信号。 每个变换的信号包括多个子带。 接下来，确定代表变换信号的波束形成权重的最佳集合的索引号。 然后，将一组波束成形权重施加到每个变换信号的每个子带，以提供加权信号。 该集合对应于确定的索引号。 然后通过组合每个加权信号来提供时域信号。

公开(公告)号：US20150358732A1

公开(公告)日：2015-12-10

申请号：US14792264

申请日：2015-07-06

申请人： CSR Technology Inc.

发明人： Tao Yu ,  Rogerio G. Alves

IPC分类号： H04R3/00

CPC分类号： H04R3/005

摘要： The present invention relates to adaptive beamforming in audio systems. More specifically, aspects of the invention relate to a method for adaptively estimating a target sound signal by establishing a simulation model simulating an audio environment comprising: a plurality of spatially separated microphones, a target sound source, and a number of audio noise sources.

摘要翻译： 本发明涉及音频系统中的自适应波束形成。 更具体地，本发明的方面涉及通过建立模拟音频环境的模拟模型来自适应地估计目标声音信号的方法，包括：多个空间分离的麦克风，目标声源和多个音频噪声源。

公开(公告)号：US20140270241A1

公开(公告)日：2014-09-18

申请号：US13843254

申请日：2013-03-15

申请人： CSR TECHNOLOGY, INC

发明人： Tao Yu ,  Rogerio G. Alves

IPC分类号： G10L21/0208 ,  H04R3/00

CPC分类号： G10L21/0208 ,  G10L2021/02165 ,  H04R3/005 ,  H04R29/006 ,  H04R2430/03 ,  H04R2430/20 ,  H04R2499/13

摘要： A method, apparatus, and manufacture for speech enhancement in an automotive environment is provided. Signals from first and second microphones of a two-microphone array are decomposed into subbands. At least one signal processing method is performed on the each subband of the decomposed signals to provide a first signal processing output signal and a second signal processing output signal. Subsequently, an acoustic events detection determination is made as to whether the driver, the front passenger, or neither is speaking. An acoustic events detection output signal is provided by selecting the first or second signal processing output signal and by either attenuating the selected signal or not, based on a currently selected operating mode and based on the result of the acoustic events detection determination. Each subband of the acoustics events detection output signal is then combined.

摘要翻译： 提供了一种用于汽车环境中语音增强的方法，装置和制造方法。 来自双麦克风阵列的第一和第二麦克风的信号被分解成子带。 对分解信号的每个子带执行至少一个信号处理方法，以提供第一信号处理输出信号和第二信号处理输出信号。 随后，对驾驶员，前排乘客或两者是否正在进行声音事件检测确定。 通过基于当前选择的操作模式并且基于声学事件检测确定的结果，通过选择第一或第二信号处理输出信号并且通过衰减所选择的信号来提供声学事件检测输出信号。 然后组合声学事件检测输出信号的每个子带。

公开(公告)号：US20150063589A1

公开(公告)日：2015-03-05

申请号：US14012886

申请日：2013-08-28

申请人： CSR TECHNOLOGY INC.

发明人： Tao Yu ,  Rogerio Guedes Alves

IPC分类号： H04R3/00

CPC分类号： H04R3/005 ,  G10L2021/02166 ,  H04R1/1083 ,  H04R3/02 ,  H04R2430/20 ,  H04R2499/11

摘要： A method, apparatus, and manufacture of beamforming is provided. Adaptive null beamforming is performed for signals from first and second microphones of a two-microphone array. The signals from the microphones are decomposed into subbands. Beamforming weights are evaluated and adaptively updated over time based, at least in part, on the direction of arrival and distance of the target signal. The beamforming weights are applied to the subbands at each updated time interval. Each subband is then combined.

摘要翻译： 提供了波束形成的方法，装置和制造。 针对来自双麦克风阵列的第一和第二麦克风的信号执行自适应零波束形成。 来自麦克风的信号被分解成子带。 至少部分地基于目标信号的到达方向和距离来评估波束成形权重并随时间自适应地更新。 波束成形权重在每个更新的时间间隔被应用于子带。 然后组合每个子带。