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11. 发明申请

US20190013036A1 Babble Noise Suppression 审中-公开
公开(公告)号：US20190013036A1
公开(公告)日：2019-01-10
申请号：US16073740
申请日：2016-11-18
申请人： Nuance Communications, Inc.
发明人： Simon Graf , Tobias Herbig , Markus Buck
IPC分类号： G10L21/0232 , G10L15/22 , G10L25/84 , G10L25/21
CPC分类号： G10L21/0232 , G10L15/22 , G10L21/0208 , G10L21/0216 , G10L25/21 , G10L25/84 , G10L25/93 , G10L2021/02087
摘要： Systems and methods are introduced to perform noise suppression of an audio signal. The audio signal includes foreground speech components and background noise. The foreground speech components correspond to speech from a user's speaking into an audio receiving device. The background noise includes babble noise that includes speech from one or more interfering speakers. A soft speech detector determines, dynamically, a speech detection result indicating a likelihood of a presence of the foreground speech components in the audio signal. The speech detection result is employed to control, dynamically, an amount of attenuation of the noise suppression to reduce the babble noise in the audio signal. Further processing achieves a more stationary background and reduction of musical tones in the audio signal.

12. 发明授权

US09767826B2 Methods and apparatus for robust speaker activity detection 有权
公开(公告)号：US09767826B2
公开(公告)日：2017-09-19
申请号：US15024543
申请日：2013-09-27
申请人： NUANCE COMMUNICATIONS, INC.
发明人： Timo Matheja , Tobias Herbig , Markus Buck
IPC分类号： H04R3/00 , G10L25/21 , G10L25/78 , G10L21/0208 , G10L21/0216
CPC分类号： G10L25/21 , G10L21/0208 , G10L25/78 , G10L2021/02087 , G10L2021/02166 , H04R3/005 , H04R2430/03 , H04R2499/13
摘要： Method and apparatus to determine a speaker activity detection measure from energy-based characteristics of signals from a plurality of speaker-dedicated microphones, detect acoustic events using power spectra for the microphone signals, and determine a robust speaker activity detection measure from the speaker activity measure and the detected acoustic events.

13. 发明申请

US20150156587A1 Wind Noise Detection For In-Car Communication Systems With Multiple Acoustic Zones 有权
标题翻译：具有多个声学区域的车载通信系统的风噪声检测
公开(公告)号：US20150156587A1
公开(公告)日：2015-06-04
申请号：US14406629
申请日：2013-02-26
申请人： NUANCE COMMUNICATIONS, INC.
发明人： Tobias Herbig , Markus Buck , Meik Pfeffinger
IPC分类号： H04R3/00
CPC分类号： H04R3/002 , G10L21/0208 , H04R3/005 , H04R2499/13
摘要： An in-car communication (ICC) system has multiple acoustic zones having varying acoustic environments. At least one input microphone within at least one acoustic zone develops a corresponding microphone signal from one or more system users. At least one loudspeaker within at least one acoustic zone provides acoustic audio to the system users. A wind noise module makes a determination of when wind noise is present in the microphone signal and modifies the microphone signal based on the determination.
摘要翻译：车载通信（ICC）系统具有多个具有不同声学环境的声学区域。在至少一个声学区域内的至少一个输入麦克风产生来自一个或多个系统用户的相应麦克风信号。至少一个声学区域内的至少一个扬声器向系统用户提供声音。风噪声模块确定麦克风信号中何时出现风噪声，并根据确定修改麦克风信号。

14. 发明申请

US20140337016A1 Speech Signal Enhancement Using Visual Information 有权
标题翻译：使用视觉信息的语音信号增强
公开(公告)号：US20140337016A1
公开(公告)日：2014-11-13
申请号：US14352016
申请日：2011-10-17
申请人： NUANCE COMMUNICATIONS, INC.
发明人： Tobias Herbig , Tobias Wolff , Markus Buck
IPC分类号： G10L25/27 , G06K9/00
CPC分类号： G10L25/27 , G06K9/00624 , G06T7/73 , G06T2207/30196 , G10L15/20 , G10L17/00 , G10L25/78 , G10L2021/02082 , H04M3/568 , H04N7/15
摘要： Visual information is used to alter or set an operating parameter of an audio signal processor, other than a beamformer. A digital camera captures visual information about a scene that includes a human speaker and/or a listener. The visual information is analyzed to ascertain information about acoustics of a room. A distance between the speaker and a microphone may be estimated, and this distance estimate may be used to adjust an overall gain of the system. Distances among, and locations of, the speaker, the listener, the microphone, a loudspeaker and/or a sound-reflecting surface may be estimated. These estimates may be used to estimate reverberations within the room and adjust aggressiveness of an anti-reverberation filter, based on an estimated ratio of direct to indirect (reverberated) sound energy expected to reach the microphone. In addition, orientation of the speaker or the listener, relative to the microphone or the loudspeaker, can also be estimated, and this estimate may be used to adjust frequency-dependent filter weights to compensate for uneven frequency propagation of acoustic signals from a mouth, or to a human ear, about a human head.
摘要翻译：视觉信息用于改变或设置除波束形成器之外的音频信号处理器的操作参数。数码相机拍摄有关包含人类扬声器和/或听众的场景的视觉信息。分析视觉信息以确定关于房间声学的信息。可以估计扬声器和麦克风之间的距离，并且该距离估计可以用于调整系统的整体增益。可以估计扬声器，收听者，麦克风，扬声器和/或声音反射表面之间的距离和位置。这些估计可以用于估计房间内的混响，并基于估计达到麦克风的直接到间接（混响）声能的估计比例来调节反混响滤波器的积极性。此外，还可以估计扬声器或收听者相对于麦克风或扬声器的取向，并且该估计可用于调整频率依赖的滤波器权重以补偿来自口的声信号的不均匀频率传播，或人的耳朵，关于人的头部。

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