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公开(公告)号：US20140286497A1
公开(公告)日：2014-09-25
申请号：US14216769
申请日：2014-03-17
申请人： Broadcom Corporation
CPC分类号： H04R3/005 , H04R29/006 , H04R2203/12 , H04R2410/01 , H04R2430/21 , H04R2430/23 , H04R2430/25
摘要： Methods, systems, and apparatuses are described for improved multi-microphone source tracking and noise suppression. In multi-microphone devices and systems, frequency domain acoustic echo cancellation is performed on each microphone input, and microphone levels and sensitivity are normalized. Methods, systems, and apparatuses are also described for improved acoustic scene analysis and source tracking using steered null error transforms, on-line adaptive acoustic scene modeling, and speaker-dependent information. Switched super-directive beamforming reinforces desired audio sources and closed-form blocking matrices suppress desired audio sources based on spatial information derived from microphone pairings. Underlying statistics are tracked and used to updated filters and models. Automatic detection of single-user and multi-user scenarios, and single-channel suppression using spatial information, non-spatial information, and residual echo are also described.
摘要翻译： 描述了改进的多麦克风源跟踪和噪声抑制的方法，系统和装置。 在多麦克风设备和系统中，在每个麦克风输入端执行频域声学回声消除，并对麦克风电平和灵敏度进行归一化。 还描述了用于改进的声场分析和源跟踪的方法，系统和装置，其使用转向零误差变换，在线自适应声场建模和与扬声器相关的信息。 开关超方向波束成形加强了所需的音频源，并且封闭形式的阻塞矩阵基于从麦克风配对得到的空间信息来抑制所需音频源。 跟踪统计信息，并用于更新过滤器和模型。 还描述了单用户和多用户场景的自动检测，以及使用空间信息，非空间信息和残余回声的单信道抑制。
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公开(公告)号：US09338551B2
公开(公告)日：2016-05-10
申请号：US14216769
申请日：2014-03-17
申请人： Broadcom Corporation
CPC分类号： H04R3/005 , H04R29/006 , H04R2203/12 , H04R2410/01 , H04R2430/21 , H04R2430/23 , H04R2430/25
摘要： Methods, systems, and apparatuses are described for improved multi-microphone source tracking and noise suppression. In multi-microphone devices and systems, frequency domain acoustic echo cancellation is performed on each microphone input, and microphone levels and sensitivity are normalized. Methods, systems, and apparatuses are also described for improved acoustic scene analysis and source tracking using steered null error transforms, on-line adaptive acoustic scene modeling, and speaker-dependent information. Switched super-directive beamforming reinforces desired audio sources and closed-form blocking matrices suppress desired audio sources based on spatial information derived from microphone pairings. Underlying statistics are tracked and used to updated filters and models. Automatic detection of single-user and multi-user scenarios, and single-channel suppression using spatial information, non-spatial information, and residual echo are also described.
摘要翻译： 描述了改进的多麦克风源跟踪和噪声抑制的方法，系统和装置。 在多麦克风设备和系统中，在每个麦克风输入端执行频域声学回声消除，并对麦克风电平和灵敏度进行归一化。 还描述了用于改进的声场分析和源跟踪的方法，系统和装置，其使用转向零误差变换，在线自适应声场建模和与扬声器相关的信息。 开关超方向波束成形加强了所需的音频源，并且封闭形式的阻塞矩阵基于从麦克风配对得到的空间信息来抑制所需音频源。 跟踪统计信息，并用于更新过滤器和模型。 还描述了单用户和多用户场景的自动检测，以及使用空间信息，非空间信息和残余回声的单信道抑制。
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公开(公告)号：US20160241955A1
公开(公告)日：2016-08-18
申请号：US15136708
申请日：2016-04-22
申请人： Broadcom Corporation
IPC分类号： H04R3/00
CPC分类号： H04R3/005 , H04R29/006 , H04R2203/12 , H04R2410/01 , H04R2430/21 , H04R2430/23 , H04R2430/25
摘要： Methods, systems, and apparatuses are described for improved multi-microphone source tracking and noise suppression. In multi-microphone devices and systems, frequency domain acoustic echo cancellation is performed on each microphone input, and microphone levels and sensitivity are normalized. Methods, systems, and apparatuses are also described for improved acoustic scene analysis and source tracking using steered null error transforms, on-line adaptive acoustic scene modeling, and speaker-dependent information. Switched super-directive beamforming reinforces desired audio sources and closed-form blocking matrices suppress desired audio sources based on spatial information derived from microphone pairings. Underlying statistics are tracked and used to updated filters and models. Automatic detection of single-user and multi-user scenarios, and single-channel suppression using spatial information, non-spatial information, and residual echo are also described.
摘要翻译： 描述了改进的多麦克风源跟踪和噪声抑制的方法，系统和装置。 在多麦克风设备和系统中，在每个麦克风输入端执行频域声学回声消除，并对麦克风电平和灵敏度进行归一化。 还描述了用于改进的声场分析和源跟踪的方法，系统和装置，其使用转向零误差变换，在线自适应声场建模和与扬声器相关的信息。 开关超方向波束成形加强了所需的音频源，并且封闭形式的阻塞矩阵基于从麦克风配对得到的空间信息来抑制所需音频源。 跟踪统计信息，并用于更新过滤器和模型。 还描述了单用户和多用户场景的自动检测，以及使用空间信息，非空间信息和残余回声的单信道抑制。
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