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1. 发明授权

US08194882B2 System and method for providing single microphone noise suppression fallback 有权
标题翻译：提供单麦克风噪声抑制后备的系统和方法
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。

2. 发明授权

US09378754B1 Adaptive spatial classifier for multi-microphone systems 有权
标题翻译：多麦克风系统的自适应空间分类器
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。

3. 发明申请

US20120027218A1 Multi-Microphone Robust Noise Suppression 失效
标题翻译：多麦克风鲁棒噪声抑制
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。

4. 发明授权

US08949120B1 Adaptive noise cancelation 有权
标题翻译：自适应噪声消除
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。

5. 发明申请

US20090220107A1 System and method for providing single microphone noise suppression fallback 有权
标题翻译：提供单麦克风噪声抑制后备的系统和方法
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。

6. 发明授权

US08798289B1 Adaptive power saving for an audio device 有权
标题翻译：音频设备的自适应省电功能
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。

7. 发明申请

US20130322643A1 Multi-Microphone Robust Noise Suppression 有权
标题翻译：多麦克风鲁棒噪声抑制
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。

8. 发明授权

US08538035B2 Multi-microphone robust noise suppression 失效
标题翻译：多麦克风强大的噪声抑制
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。

9. 发明申请

US20130231925A1 Monaural Noise Suppression Based on Computational Auditory Scene Analysis 有权
标题翻译：基于计算听觉场景分析的单声道噪声抑制
公开(公告)号：US20130231925A1
公开(公告)日：2013-09-05
申请号：US13859186
申请日：2013-04-09
申请人： Carlos Avendano , Jean Laroche , Michael M. Goodwin , Ludger Solbach
发明人： Carlos Avendano , Jean Laroche , Michael M. Goodwin , Ludger Solbach
IPC分类号： G10L21/0208
CPC分类号： G10L21/0208 , G10L21/0272
摘要： The present technology provides a robust noise suppression system that may concurrently reduce noise and echo components in an acoustic signal while limiting the level of speech distortion. A time-domain acoustic signal may be received and be transformed to frequency-domain sub-band signals. Features, such as pitch, may be identified and tracked within the sub-band signals. Initial speech and noise models may be then be estimated at least in part from a probability analysis based on the tracked pitch sources. Speech and noise models may be resolved from the initial speech and noise models and noise reduction may be performed on the sub-band signals. An acoustic signal may be reconstructed from the noise-reduced sub-band signals.
摘要翻译：本技术提供了一种强大的噪声抑制系统，其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。可以接收时域声信号并将其变换到频域子带信号。可以在子带信号内识别和跟踪诸如音调的特征。可以至少部分地基于跟踪的音调源的概率分析来估计初始语音和噪声模型。语音和噪声模型可以从初始语音和噪声模型中解决，并且可以对子带信号执行噪声降低。可以从噪声降低的子带信号重构声信号。

10. 发明授权

US08204253B1 Self calibration of audio device 有权
标题翻译：音频设备的自校准
公开(公告)号：US08204253B1
公开(公告)日：2012-06-19
申请号：US12286909
申请日：2008-10-02
申请人： Ludger Solbach
发明人： Ludger Solbach
IPC分类号： H04B15/00 , G10L21/02
CPC分类号： H04R3/005 , H04M9/082 , H04R2410/01
摘要： An audio device performs self calibration with respect to an audio source location when processing an audio signal frame determined likely to be dominated by the audio source. One or more conditions for sub-bands within the audio frame are evaluated to help identify whether the frame is dominated by the audio source. If the conditions meet a threshold value for a number of sub-bands within the frame, the audio signal may be identified as one dominated by the desired audio source and an audio source location coefficient may be adapted. Additionally, when the audio source location coefficient falls below a threshold value, (e.g., suggesting that one of two or more microphones is blocked), noise suppression is reduced or eliminated for the frame or frame sub-bands to prevent suppression of a desired audio source component along with the noise component.
摘要翻译：当处理可能由音频源主导的音频信号帧时，音频设备相对于音频源位置执行自校准。评估音频帧内的子带的一个或多个条件以帮助识别帧是否被音频源支配。如果条件满足帧内的多个子带的阈值，则音频信号可以被识别为由所需音频源支配的音频信号，并且可以调整音频源位置系数。此外，当音频源位置系数低于阈值时（例如，暗示两个或多个麦克风中的一个被阻止），对于帧或帧子带，减少或消除噪声抑制以防止抑制所需的音频源分量以及噪声分量。

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