公开(公告)号：US20120027218A1

公开(公告)日：2012-02-02

申请号：US12832920

申请日：2010-07-08

申请人： Mark Every ,  Carlos Avendano ,  Ludger Solbach ,  Ye Jiang ,  Carlo Murgia

发明人： Mark Every ,  Carlos Avendano ,  Ludger Solbach ,  Ye Jiang ,  Carlo Murgia

IPC分类号： H04B3/20

CPC分类号： H04R3/002 ,  G10L21/0208 ,  G10L21/0232 ,  G10L2021/02082 ,  G10L2021/02166

摘要： A robust noise reduction system may concurrently reduce noise and echo components in an acoustic signal while limiting the level of speech distortion. The system may receive acoustic signals from two or more microphones in a close-talk, hand-held or other configuration. The received acoustic signals are transformed to cochlea domain sub-band signals and echo and noise components may be subtracted from the sub-band signals. Features in the acoustic sub-band signals are identified and used to generate a multiplicative mask. The multiplicative mask is applied to the noise subtracted sub-band signals and the sub-band signals are reconstructed in the time domain.

摘要翻译： 鲁棒的降噪系统可以同时降低声信号中的噪声和回波分量，同时限制语音失真的水平。 系统可以以紧密通话，手持式或其他配置从两个或更多个麦克风接收声信号。 接收到的声信号被变换为耳蜗域子带信号，并且可以从子带信号中减去回波和噪声分量。 识别声学子带信号中的特征并用于产生乘法掩模。 将乘法掩码应用于噪声减去的子带信号，并且在时域中重构子带信号。

公开(公告)号：US08949120B1

公开(公告)日：2015-02-03

申请号：US12422917

申请日：2009-04-13

申请人： Mark Every ,  Ludger Solbach ,  Carlo Murgia ,  Ye Jiang

发明人： Mark Every ,  Ludger Solbach ,  Carlo Murgia ,  Ye Jiang

IPC分类号： G10L21/00 ,  G10L15/00 ,  G10K11/16 ,  H04B15/00 ,  G10L21/0208 ,  G10L21/0316 ,  G10L21/02

CPC分类号： G10L21/0208 ,  G10L21/02 ,  G10L21/0316 ,  G10L21/034 ,  G10L2021/02166

摘要： Systems and methods for controlling adaptivity of noise cancellation are presented. One or more audio signals are received by one or more corresponding microphones. The one or more signals may be decomposed into frequency sub-bands. Noise cancellation consistent with identified adaptation constraints is performed on the one or more audio signals. The one or more audio signals may then be reconstructed from the frequency sub-bands and outputted via an output device.

摘要翻译： 提出了用于控制噪声抵消适应性的系统和方法。 一个或多个音频信号由一个或多个相应的麦克风接收。 一个或多个信号可以被分解成频率子带。 对所述一个或多个音频信号执行与所识别的适应约束一致的噪声消除。 然后可以从频率子带重构一个或多个音频信号，并通过输出设备输出。

公开(公告)号：US08798289B1

公开(公告)日：2014-08-05

申请号：US12536374

申请日：2009-08-05

申请人： Mark Every ,  Carlos Avendano ,  Ye Jiang ,  Ludger Solbach ,  Carlo Murgia

发明人： Mark Every ,  Carlos Avendano ,  Ye Jiang ,  Ludger Solbach ,  Carlo Murgia

IPC分类号： H04B15/00

CPC分类号： G10L25/48 ,  G06F1/325 ,  G10L21/0208 ,  H04R3/005 ,  H04R2499/11 ,  Y02D50/20

摘要： An adaptive power control monitors the noise level within a primary acoustic signal and compares the noise level to a threshold. If the noise level is lower than the threshold, a noise suppression system is deactivated and bypass filtering and cross fading are enabled. If the noise level is higher than the threshold, the noise suppression system is activated.

摘要翻译： 自适应功率控制监测主声信号内的噪声电平，并将噪声电平与阈值进行比较。 如果噪声电平低于阈值，则禁用噪声抑制系统，并启用旁路滤波和交叉衰落。 如果噪声电平高于阈值，则噪声抑制系统被激活。

公开(公告)号：US20130322643A1

公开(公告)日：2013-12-05

申请号：US13959457

申请日：2013-08-05

申请人： Mark Every ,  Carlos Avendano ,  Ludger Solbach ,  Ye Jiang ,  Carlo Murgia

发明人： Mark Every ,  Carlos Avendano ,  Ludger Solbach ,  Ye Jiang ,  Carlo Murgia

IPC分类号： H04R3/00

CPC分类号： H04R3/002 ,  G10L21/0208 ,  G10L21/0232 ,  G10L2021/02082 ,  G10L2021/02166

摘要： A robust noise reduction system may concurrently reduce noise and echo components in an acoustic signal while limiting the level of speech distortion. The system may receive acoustic signals from two or more microphones in a close-talk, hand-held or other configuration. The received acoustic signals are transformed to frequency domain sub-band signals and echo and noise components may be subtracted from the sub-band signals. Features in the acoustic sub-band signals are identified and used to generate a multiplicative mask. The multiplicative mask is applied to the noise subtracted sub-band signals and the sub-band signals are reconstructed in the time domain.

摘要翻译： 鲁棒的降噪系统可以同时降低声信号中的噪声和回波分量，同时限制语音失真的水平。 系统可以以紧密通话，手持式或其他配置从两个或更多个麦克风接收声信号。 接收到的声信号被变换到频域子带信号，并且可以从子带信号中减去回波和噪声分量。 识别声学子带信号中的特征并用于产生乘法掩模。 将乘法掩码应用于噪声减去的子带信号，并且在时域中重构子带信号。

公开(公告)号：US08538035B2

公开(公告)日：2013-09-17

申请号：US12832920

申请日：2010-07-08

申请人： Mark Every ,  Carlos Avendano ,  Ludger Solbach ,  Ye Jiang ,  Carlo Murgia

发明人： Mark Every ,  Carlos Avendano ,  Ludger Solbach ,  Ye Jiang ,  Carlo Murgia

IPC分类号： H04B3/20

CPC分类号： H04R3/002 ,  G10L21/0208 ,  G10L21/0232 ,  G10L2021/02082 ,  G10L2021/02166

摘要： A robust noise reduction system may concurrently reduce noise and echo components in an acoustic signal while limiting the level of speech distortion. The system may receive acoustic signals from two or more microphones in a close-talk, hand-held or other configuration. The received acoustic signals are transformed to frequency domain sub-band signals and echo and noise components may be subtracted from the sub-band signals. Features in the acoustic sub-band signals are identified and used to generate a multiplicative mask. The multiplicative mask is applied to the noise subtracted sub-band signals and the sub-band signals are reconstructed in the time domain.

摘要翻译： 鲁棒的降噪系统可以同时降低声信号中的噪声和回波分量，同时限制语音失真的水平。 系统可以以紧密通话，手持式或其他配置从两个或更多个麦克风接收声信号。 接收到的声信号被变换到频域子带信号，并且可以从子带信号中减去回波和噪声分量。 识别声学子带信号中的特征并用于产生乘法掩模。 将乘法掩码应用于噪声减去的子带信号，并且在时域中重构子带信号。

公开(公告)号：US08194882B2

公开(公告)日：2012-06-05

申请号：US12072931

申请日：2008-02-29

申请人： Mark Every ,  Carlos Avendano ,  Ludger Solbach ,  Carlo Murgia

发明人： Mark Every ,  Carlos Avendano ,  Ludger Solbach ,  Carlo Murgia

IPC分类号： H04B15/00

CPC分类号： G10L21/0208 ,  G10L2021/02165

摘要： Systems and methods for providing single microphone noise suppression fallback are provided. In exemplary embodiments, primary and secondary acoustic signals are received. A single microphone noise estimate may be generated based on the primary acoustic signal, while a dual microphone noise estimate may be generated based on the primary and secondary acoustic signals. A combined noise estimate based on the single and dual microphone noise estimates is then determined. Using the combined noise estimate, a gain mask may be generated and applied to the primary acoustic signal to generate a noise suppressed signal. Subsequently, the noise suppressed signal may be output.

摘要翻译： 提供了提供单麦克风噪声抑制后备的系统和方法。 在示例性实施例中，接收主和次声信号。 可以基于主声信号来生成单个麦克风噪声估计，而可以基于主声信号和次声信号来生成双麦克风噪声估计。 然后确定基于单个和双重麦克风噪声估计的组合噪声估计。 使用组合噪声估计，可以生成增益掩模并将其应用于主声信号以产生噪声抑制信号。 随后，可以输出噪声抑制信号。

公开(公告)号：US20090220107A1

公开(公告)日：2009-09-03

申请号：US12072931

申请日：2008-02-29

申请人： Mark Every ,  Carlos Avendano ,  Ludger Solbach ,  Carlo Murgia

发明人： Mark Every ,  Carlos Avendano ,  Ludger Solbach ,  Carlo Murgia

IPC分类号： H04B15/00

CPC分类号： G10L21/0208 ,  G10L2021/02165

摘要： Systems and methods for providing single microphone noise suppression fallback are provided. In exemplary embodiments, primary and secondary acoustic signals are received. A single microphone noise estimate may be generated based on the primary acoustic signal, while a dual microphone noise estimate may be generated based on the primary and secondary acoustic signals. A combined noise estimate based on the single and dual microphone noise estimates is then determined. Using the combined noise estimate, a gain mask may be generated and applied to the primary acoustic signal to generate a noise suppressed signal. Subsequently, the noise suppressed signal may be output.

摘要翻译： 提供了提供单麦克风噪声抑制后备的系统和方法。 在示例性实施例中，接收主和次声信号。 可以基于主声信号来产生单个麦克风噪声估计，而可以基于主声信号和次声信号来生成双麦克风噪声估计。 然后确定基于单个和双重麦克风噪声估计的组合噪声估计。 使用组合噪声估计，可以生成增益掩模并将其应用于主声信号以产生噪声抑制信号。 随后，可以输出噪声抑制信号。

公开(公告)号：US20110182436A1

公开(公告)日：2011-07-28

申请号：US12693998

申请日：2010-01-26

申请人： Carlo Murgia ,  Carlo Avendano ,  Karim Younes ,  Mark Every ,  Ye Jiang

发明人： Carlo Murgia ,  Carlo Avendano ,  Karim Younes ,  Mark Every ,  Ye Jiang

IPC分类号： G10K11/16

CPC分类号： G10K11/16 ,  H04R3/005

摘要： An array of microphones utilizes two sets of two microphones for noise suppression. A primary microphone and secondary microphone of the three microphones may be positioned closely spaced to each other to provide acoustic signals used to achieve noise cancellation. A tertiary microphone may be spaced with respect to either the primary microphone or the secondary microphone in a spread-microphone configuration for deriving level cues from audio signals provided by tertiary and the primary or secondary microphone. Signals from two microphones may be used rather than three microphones. The level cues are expressed via an inter-microphone level difference (ILD) which is used to determine one or more cluster tracking control signals. The ILD based cluster tracking signals are used to control the adaptation of null-processing noise cancellation modules. A noise cancelled primary acoustic signal and ILD based cluster tracking control signals are used during post filtering to adaptively generate a mask to be applied against a speech estimate signal.

摘要翻译： 一组麦克风使用两组麦克风进行噪声抑制。 三个麦克风的主麦克风和次麦克风可以彼此紧密地定位，以提供用于实现噪声消除的声信号。 第三麦克风可以在扩展麦克风配置中相对于主麦克风或辅助麦克风间隔开，以从由三级麦克风和主麦克风或辅助麦克风提供的音频信号导出电平提示。 可以使用来自两个麦克风的信号而不是三个麦克风。 通过用于确定一个或多个集群跟踪控制信号的麦克风间级差（ILD）来表示电平提示。 基于ILD的群集跟踪信号用于控制空处理噪声消除模块的适应。 在后滤波期间使用噪声消除的主声信号和基于ILD的群集跟踪控制信号来自适应地生成针对语音估计信号应用的掩码。

公开(公告)号：US08718290B2

公开(公告)日：2014-05-06

申请号：US12693998

申请日：2010-01-26

申请人： Carlo Murgia ,  Carlos Avendano ,  Karim Younes ,  Mark Every ,  Ye Jiang

发明人： Carlo Murgia ,  Carlos Avendano ,  Karim Younes ,  Mark Every ,  Ye Jiang

IPC分类号： A61F11/06

CPC分类号： G10K11/16 ,  H04R3/005

摘要： An audio device having two pairs of microphones for noise suppression. Primary and secondary microphones of the three microphones may be positioned closely spaced to each other to provide acoustic signals used to achieve noise cancellation/suppression. A tertiary microphone may be spaced with respect to either the primary microphone or the secondary microphone in a spread-microphone configuration for deriving level cues from audio signals provided by the tertiary and the primary or secondary microphone. Signals from two microphones may be used rather than three microphones. The level cues are expressed via an inter-microphone level difference (ILD) used to determine one or more cluster tracking control signal(s). The ILD based cluster tracking signals are used to control adaptation of null-processing noise suppression modules. A noise cancelled primary acoustic signal and ILD based cluster tracking control signals are used during post filtering to adaptively generate a mask to be applied against a speech estimate signal.

摘要翻译： 具有用于噪声抑制的两对麦克风的音频设备。 三个麦克风的主麦克风和次麦克风可以彼此紧密地定位，以提供用于实现噪声消除/抑制的声学信号。 第三麦克风可以相对于主麦克风或辅助麦克风在扩展麦克风配置中间隔开，以从由第三麦克风和主麦克风提供的音频信号中导出等级线索。 可以使用来自两个麦克风的信号而不是三个麦克风。 通过用于确定一个或多个簇跟踪控制信号的麦克风间级别差（ILD）来表示级别提示。 基于ILD的群集跟踪信号用于控制空处理噪声抑制模块的自适应。 在后滤波期间使用噪声消除的主声信号和基于ILD的群集跟踪控制信号来自适应地生成针对语音估计信号应用的掩码。

公开(公告)号：US20140205107A1

公开(公告)日：2014-07-24

申请号：US14222255

申请日：2014-03-21

申请人： Carlo Murgia ,  Carlos Avendano ,  Karim Younes ,  Mark Every ,  Ye Jiang

发明人： Carlo Murgia ,  Carlos Avendano ,  Karim Younes ,  Mark Every ,  Ye Jiang

IPC分类号： G10K11/16

CPC分类号： G10K11/16 ,  H04R3/005

摘要： A system utilizing two pairs of microphones for noise suppression. Primary and secondary microphones may be positioned closely spaced to each other to provide acoustic signals used to achieve noise cancellation/suppression. An additional, tertiary microphone may be spaced with respect to either the primary microphone or the secondary microphone in a spread-microphone configuration for deriving level cues from audio signals provided by the tertiary and the primary or secondary microphone. The level cues are expressed via a level difference used to determine one or more cluster tracking control signal(s). The level difference-based cluster tracking signals are used to control adaptation of noise suppression. A noise cancelled primary acoustic signal and level difference-based cluster tracking control signals are used during post filtering to adaptively generate a mask to be applied to a speech estimate signal.

摘要翻译： 使用两对麦克风进行噪声抑制的系统。 主麦克风和次麦克风可以彼此紧密地定位以提供用于实现噪声消除/抑制的声学信号。 附加的三级麦克风可以在扩展麦克风配置中相对于主麦克风或辅助麦克风间隔开，以从由第三麦克风和主麦克风提供的音频信号导出电平提示。 通过用于确定一个或多个簇跟踪控制信号的电平差来表示电平提示。 基于电平差的集群跟踪信号用于控制噪声抑制的适应。 在后置滤波期间使用噪声消除的主声信号和基于电平差的集群跟踪控制信号来自适应地生成要应用于语音估计信号的掩码。