公开(公告)号：US08606571B1

公开(公告)日：2013-12-10

申请号：US12837340

申请日：2010-07-15

申请人： Mark Every ,  Carlo Murgia

发明人： Mark Every ,  Carlo Murgia

IPC分类号： G10L15/00

CPC分类号： G10L21/0232 ,  G10L2021/02166 ,  H04M9/082 ,  H04R3/005 ,  H04R2410/05 ,  H04R2499/11

摘要： The present technology provides noise reduction of an acoustic signal using a configurable classification threshold which provides a sophisticated level of control to balance the tradeoff between positional robustness and noise reduction robustness. The configurable classification threshold corresponds to a configurable spatial region, such that signals arising from sources within the configurable spatial region are preserved, and signals arising from sources outside it are rejected. In embodiments, the configurable classification threshold can be automatically and dynamically adjusted in real-time based on evaluated environmental conditions surrounding an audio device implementing the noise reduction techniques described herein.

摘要翻译： 本技术使用可配置的分类阈值提供声信号的噪声降低，其提供复杂的控制水平以平衡位置稳健性和降噪鲁棒性之间的权衡。 可配置分类阈值对应于可配置的空间区域，使得从可配置空间区域内的源产生的信号被保留，并且从其外部的源产生的信号被拒绝。 在实施例中，可以基于围绕实现本文所述的降噪技术的音频设备的评估的环境条件来实时地自动和动态地调整可配置分类阈值。

公开(公告)号：US20130251170A1

公开(公告)日：2013-09-26

申请号：US13888796

申请日：2013-05-07

申请人： Mark Every ,  Carlos Avendano

发明人： Mark Every ,  Carlos Avendano

IPC分类号： H04R3/00

CPC分类号： G10L21/0232 ,  G10L21/0208 ,  G10L25/18 ,  G10L2021/02087 ,  H04R3/002

摘要： The present technology provides adaptive noise reduction of an acoustic signal using a sophisticated level of control to balance the tradeoff between speech loss distortion and noise reduction. The energy level of a noise component in a sub-band signal of the acoustic signal is reduced based on an estimated signal-to-noise ratio of the sub-band signal, and further on an estimated threshold level of speech distortion in the sub-band signal. In various embodiments, the energy level of the noise component in the sub-band signal may be reduced to no less than a residual noise target level. Such a target level may be defined as a level at which the noise component ceases to be perceptible.

摘要翻译： 本技术使用复杂的控制水平来提供声信号的自适应降噪，以平衡语音丢失失真和噪声降低之间的权衡。 基于子带信号的估计信噪比减小声信号的子带信号中的噪声分量的能级，并且还基于子带信号的估计的语音失真阈值水平， 频带信号。 在各种实施例中，子带信号中的噪声分量的能量水平可以减小到不小于残余噪声目标水平。 这样的目标水平可以被定义为噪声分量不再可察觉的水平。

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：US09378754B1

公开(公告)日：2016-06-28

申请号：US12841061

申请日：2010-07-21

申请人： Mark Every ,  Ludger Solbach

发明人： Mark Every ,  Ludger Solbach

IPC分类号： G10L21/00 ,  G10L21/0272 ,  H04B3/20 ,  G10L21/0208 ,  G10L21/0216

CPC分类号： G10L21/0272 ,  G10L21/0208 ,  G10L25/18 ,  G10L25/81 ,  G10L2021/02082 ,  G10L2021/02166 ,  H04B3/20

摘要： A robust noise suppression 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： 鲁棒的噪声抑制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：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：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：US08521530B1

公开(公告)日：2013-08-27

申请号：US12217076

申请日：2008-06-30

申请人： Mark Every ,  David Klein

发明人： Mark Every ,  David Klein

IPC分类号： G10L15/04 ,  G10L15/20 ,  G10L19/12 ,  G10L19/14 ,  G10L17/00 ,  G10L11/06 ,  H04B3/20 ,  H03B29/00

CPC分类号： G10L21/0232 ,  H04M9/08

摘要： A method, system, and computer program for enhancing a signal are presented. The signal is received, and energy estimates of the signal may be determined. At least one characteristic of the signal may be inferred based on the energy estimates. A mask may be generated based, in part, on the at least one characteristic. In turn, the mask may be applied to the signal to produce an enhanced signal, which may be outputted.

摘要翻译： 提出了一种用于增强信号的方法，系统和计算机程序。 接收信号，并且可以确定信号的能量估计。 可以基于能量估计来推断信号的至少一个特征。 可以部分地基于至少一个特征产生掩模。 反过来，掩模可以被施加到信号以产生可以被输出的增强信号。

公开(公告)号：US08473285B2

公开(公告)日：2013-06-25

申请号：US13424189

申请日：2012-03-19

申请人： Mark Every ,  Carlos Avendano

发明人： Mark Every ,  Carlos Avendano

IPC分类号： G10L21/02

CPC分类号： G10L21/0232 ,  G10L21/0208 ,  G10L25/18 ,  G10L2021/02087 ,  H04R3/002

摘要： The present technology provides adaptive noise reduction of an acoustic signal using a sophisticated level of control to balance the tradeoff between speech loss distortion and noise reduction. The energy level of a noise component in a sub-band signal of the acoustic signal is reduced based on an estimated signal-to-noise ratio of the sub-band signal, and further on an estimated threshold level of speech distortion in the sub-band signal. In embodiments, the energy level of the noise component in the sub-band signal may be reduced to no less than a residual noise target level. Such a target level may be defined as a level at which the noise component ceases to be perceptible.

摘要翻译： 本技术使用复杂的控制水平来提供声信号的自适应降噪，以平衡语音丢失失真和噪声降低之间的权衡。 基于子带信号的估计信噪比减小声信号的子带信号中的噪声分量的能级，并且还基于子带信号的估计的语音失真阈值水平， 频带信号。 在实施例中，子带信号中的噪声分量的能级可以减小到不小于残余噪声目标电平。 这样的目标水平可以被定义为噪声分量不再可察觉的水平。

公开(公告)号：US20110257967A1

公开(公告)日：2011-10-20

申请号：US12832901

申请日：2010-07-08

申请人： Mark Every ,  Carlos Avendano

发明人： Mark Every ,  Carlos Avendano

IPC分类号： G10L21/02

CPC分类号： G10L21/0232 ,  G10L21/0208 ,  G10L25/18 ,  G10L2021/02087 ,  H04R3/002

摘要： The present technology provides adaptive noise reduction of an acoustic signal using a sophisticated level of control to balance the tradeoff between speech loss distortion and noise reduction. The energy level of a noise component in a sub-band signal of the acoustic signal is reduced based on an estimated signal-to-noise ratio of the sub-band signal, and further on an estimated threshold level of speech distortion in the sub-band signal. In embodiments, the energy level of the noise component in the sub-band signal may be reduced to no less than a residual noise target level. Such a target level may be defined as a level at which the noise component ceases to be perceptible.

摘要翻译： 本技术使用复杂的控制水平来提供声信号的自适应降噪，以平衡语音丢失失真和噪声降低之间的权衡。 基于子带信号的估计信噪比减小声信号的子带信号中的噪声分量的能级，并且还基于子带信号的估计的语音失真阈值水平， 频带信号。 在实施例中，子带信号中的噪声分量的能级可以减小到不小于残余噪声目标电平。 这样的目标水平可以被定义为噪声分量不再可察觉的水平。

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。