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51. 发明授权

US08189810B2 System for processing microphone signals to provide an output signal with reduced interference 有权
标题翻译：用于处理麦克风信号的系统，以提供具有减小的干扰的输出信号
公开(公告)号：US08189810B2
公开(公告)日：2012-05-29
申请号：US12125298
申请日：2008-05-22
申请人： Tobias Wolff , Markus Buck
发明人： Tobias Wolff , Markus Buck
IPC分类号： H04B15/00
CPC分类号： H04M9/082 , G10L2021/02082 , G10L2021/02166
摘要： A system reduces noise or other external signals that may affect communication. A device converts sound from two or more microphones into an operational signal. Based on one or both signals, a beamformer generates an intermediate signal. Reflected or other undesired signals may be estimated or measured by an echo canceller. Interference may be measured or estimated by processing the echo-reduced signal or estimate by a blocking matrix. An interference canceller may reduce the interference that may modify or disrupt a signal based on the output of the blocking matrix and the intermediate signal.
摘要翻译：系统减少可能影响通信的噪声或其他外部信号。设备将来自两个或更多麦克风的声音转换为操作信号。基于一个或两个信号，波束形成器产生中间信号。可以通过回波消除器来估计或测量反射或其它不需要的信号。可以通过处理回波减小信号或通过阻塞矩阵估计来测量或估计干扰。干扰消除器可以减少可能基于阻塞矩阵和中间信号的输出修改或中断信号的干扰。

52. 发明申请

US20090063143A1 SYSTEM FOR SPEECH SIGNAL ENHANCEMENT IN A NOISY ENVIRONMENT THROUGH CORRECTIVE ADJUSTMENT OF SPECTRAL NOISE POWER DENSITY ESTIMATIONS 有权
标题翻译：通过光谱噪声功率密度估计的正确调整，噪声环境中的语音信号增强系统
公开(公告)号：US20090063143A1
公开(公告)日：2009-03-05
申请号：US12202147
申请日：2008-08-29
申请人： Gerhard Uwe Schmidt , Tobias Wolff , Markus Buck
发明人： Gerhard Uwe Schmidt , Tobias Wolff , Markus Buck
IPC分类号： G10L15/20
CPC分类号： H04R3/00 , G10L21/0208 , G10L21/0216
摘要： A system estimates the spectral noise power density of an audio signal includes a spectral noise power density estimation unit, a correction term processor, and a combination processor. The spectral noise power density estimation unit may provide a first estimate of the spectral noise power density of the audio signal. The correction term processor may provide a time dependent correction term based, at least in part, on a spectral noise power density estimation error of the actual spectral noise power density. The correction term may be determined so that the spectral noise power density estimation error is reduced. The combination processor may combine the first estimate with the correction term to obtain a second estimate of the spectral noise power density that may be used for subsequent signal processing to enhance a desired signal component of the audio signal.
摘要翻译：系统估计音频信号的频谱噪声功率密度包括频谱噪声功率密度估计单元，校正项处理器和组合处理器。频谱噪声功率密度估计单元可以提供音频信号的频谱噪声功率密度的第一估计。校正项处理器可以至少部分地基于实际频谱噪声功率密度的频谱噪声功率密度估计误差来提供时间相关校正项。可以确定校正项，使得谱噪声功率密度估计误差降低。组合处理器可以将第一估计与校正项组合以获得可用于后续信号处理以增强音频信号的期望信号分量的频谱噪声功率密度的第二估计。

53. 发明授权

US07028526B2 Device for changing tooling 失效
标题翻译：更换刀具的装置
公开(公告)号：US07028526B2
公开(公告)日：2006-04-18
申请号：US10795274
申请日：2004-03-09
申请人： Karl Thudium , Markus Buck , Peter Sommerer
发明人： Karl Thudium , Markus Buck , Peter Sommerer
IPC分类号： B21D43/05
CPC分类号： B30B15/028 , B21D37/14 , B21D43/05
摘要： To accommodate a press tooling carrier without interference, a control arm straight guide having at least one drive, e.g., having motor angular gears (worm gears), cardan shaft or the like is provided. A control arm straight guide permits a very shallow position of the joints in the completely assembled state. A hydraulic cylinder may be used to support startup of the motor, i.e., to move the control arm straight guide out of its bottom dead center position.
摘要翻译：为了容纳冲压工具载体而没有干扰，提供了具有至少一个驱动装置（例如具有马达角齿轮（蜗轮），万向轴等）的控制臂直引导件。控制臂直线导轨允许接头处于完全组装状态的非常浅的位置。可以使用液压缸来支持马达的启动，即将控制臂直的导轨移出其下止点位置。

54. 发明授权

US09805738B2 Formant dependent speech signal enhancement 有权
公开(公告)号：US09805738B2
公开(公告)日：2017-10-31
申请号：US14423543
申请日：2012-09-04
申请人： Mohamed Krini , Ingo Schalk-Schupp , Markus Buck
发明人： Mohamed Krini , Ingo Schalk-Schupp , Markus Buck
IPC分类号： G10L21/00 , G10L25/18 , G10L21/02 , G10L19/06 , G10L21/0232 , G10L19/00
CPC分类号： G10L25/18 , G10L19/06 , G10L21/02 , G10L21/0232 , G10L2019/0016
摘要： An arrangement is described for speech signal processing. An input microphone signal is received that includes a speech signal component and a noise component. The microphone signal is transformed into a frequency domain set of short-term spectra signals. Then speech formant components within the spectra signals are estimated based on detecting regions of high energy density in the spectra signals. One or more dynamically adjusted gain factors are applied to the spectra signals to enhance the speech formant components.

55. 发明授权

US09641934B2 In-car communication system for multiple acoustic zones 有权
公开(公告)号：US09641934B2
公开(公告)日：2017-05-02
申请号：US13346854
申请日：2012-01-10
申请人： Tobias Herbig , Markus Buck , Meik Pfeffinger
发明人： Tobias Herbig , Markus Buck , Meik Pfeffinger
IPC分类号： G10L15/20 , H04R3/00 , H04M9/08 , H04R5/02 , H04R1/40 , H04R3/02 , H04R3/12
CPC分类号： H04R3/12 , G10L21/0208 , G10L25/84 , G10L2021/02082 , H04M9/082 , H04R1/406 , H04R3/005 , H04R3/02 , H04R5/02 , H04R27/00 , H04R2201/403 , H04R2227/001 , H04R2227/009 , H04R2410/05 , H04R2420/01 , H04R2499/13
摘要： An In-Car Communication (ICC) system supports the communication paths within a car by receiving the speech signals of a speaking passenger and playing it back for one or more listening passengers. Signal processing tasks are split into a microphone related part and into a loudspeaker related part. A sound processing system suitable for use in a vehicle having multiple acoustic zones includes a plurality of microphone In-Car Communication (Mic-ICC) instances coupled and a plurality of loudspeaker In-Car Communication (Ls-ICC) instances. The system further includes a dynamic audio routing matrix with a controller and coupled to the Mic-ICC instances, a mixer coupled to the plurality of Mic-ICC instances and a distributor coupled to the Ls-ICC instances.

56. 发明申请

US20160050488A1 SYSTEM AND METHOD FOR IDENTIFYING SUBOPTIMAL MICROPHONE PERFORMANCE 有权
标题翻译：用于识别低级麦克风性能的系统和方法
公开(公告)号：US20160050488A1
公开(公告)日：2016-02-18
申请号：US14778643
申请日：2013-03-21
申请人： Timo MATHEJA , Markus BUCK , NUANCE COMMUNICATIONS, INC.
发明人： Timo Matheja , Markus Buck
IPC分类号： H04R3/00
CPC分类号： H04R3/00 , G06F3/165 , H04M1/03 , H04M1/6008 , H04R3/005 , H04R2430/03 , H04R2430/23 , H04R2499/11
摘要： Embodiments disclosed herein may include determining a signal parameter of a first microphone and a second microphone associated with a computing device. Embodiments may include generating a reference parameter based upon at least one of the parameter of the first microphone and the parameter of the second microphone. Embodiments may include adjusting a tolerance of at least one of the first microphone and the second microphone, based upon the reference parameter. Embodiments may include receiving, at the first microphone, a first speech signal, the first speech signal having a first speech signal magnitude and receiving, at the second microphone, a second speech signal, the second speech signal having a second speech signal magnitude. Embodiments may include comparing at least one of the first speech signal magnitude and the second speech signal magnitude with a third speech signal magnitude and detecting an obstructed microphone based upon the comparison.
摘要翻译：本文公开的实施例可以包括确定与计算设备相关联的第一麦克风和第二麦克风的信号参数。实施例可以包括基于第一麦克风的参数和第二麦克风的参数中的至少一个来生成参考参数。实施例可以包括基于参考参数调整第一麦克风和第二麦克风中的至少一个的容差。实施例可以包括在第一麦克风处接收第一语音信号，第一语音信号具有第一语音信号幅度，并且在第二麦克风处接收第二语音信号，第二语音信号具有第二语音信号幅度。实施例可以包括将第一语音信号幅度和第二语音信号幅度中的至少一个与第三语音信号幅度进行比较，并且基于该比较来检测阻塞的麦克风。

57. 发明授权

US09036752B2 Low-delay filtering 有权
标题翻译：低延迟滤波
公开(公告)号：US09036752B2
公开(公告)日：2015-05-19
申请号：US14119933
申请日：2011-05-05
申请人： Markus Buck , Tobias Wolff
发明人： Markus Buck , Tobias Wolff
IPC分类号： H04B1/00 , H04B1/10 , H03H17/02 , H03H21/00 , G10L21/0232
CPC分类号： H04B1/10 , G10L21/0232 , H03H17/0213 , H03H21/0027
摘要： A method of frequency-domain filtering is provided that includes a plurality of filters, the plurality of filters including at least one constrained filter(s) W=I, I and at least one unconstrained filter(s) W=1,K− The method includes cascading the W k=i,K unconstrained filter(s). A single constraint window C is applied to the cascaded W=i,K unconstrained filter(s). The W=1,I constrained filter(s) are cascaded with the constrained cascaded Wk=1,K unconstrained filter(s) to form a resulting filter Wll=C(W 1{circle around (x)} . . . {circle around (x)} W){circle around (x)} W . . . W. The frequency domain representation of the single constraint window C may be based, at least in part, on a time domain representation of a single constraint window C that has been circularly shifted such that the frequency domain representation of the constraint window matches a property of the frequency domain representation of the cascaded W=1,K unconstrained filters.
摘要翻译：提供了包括多个滤波器的频域滤波的方法，所述多个滤波器包括至少一个约束滤波器W = I，I和至少一个无约束滤波器W = 1，K- 方法包括级联W k = i，K无约束滤波器。单个约束窗口C被应用于级联的W = i，K无约束滤波器。 W = 1，约束滤波器与受限级联Wk = 1，K无约束滤波器级联，以形成滤波器W11 = C（W 1 {围绕（x）}圆圈...圆圈 around（x）} W）{circle around（x）} W。。。单个约束窗口C的频域表示可以至少部分地基于已被循环移位的单个约束窗口C的时域表示，使得约束窗口的频域表示与属性的级联W = 1的频域表示，K个无约束滤波器。

58. 发明授权

US08364479B2 System for speech signal enhancement in a noisy environment through corrective adjustment of spectral noise power density estimations 有权
标题翻译：通过频谱噪声功率密度估计的校正调整，在噪声环境中进行语音信号增强的系统
公开(公告)号：US08364479B2
公开(公告)日：2013-01-29
申请号：US12202147
申请日：2008-08-29
申请人： Gerhard Uwe Schmidt , Tobias Wolff , Markus Buck
发明人： Gerhard Uwe Schmidt , Tobias Wolff , Markus Buck
IPC分类号： G10L21/02
CPC分类号： H04R3/00 , G10L21/0208 , G10L21/0216
摘要： A system estimates the spectral noise power density of an audio signal includes a spectral noise power density estimation unit, a correction term processor, and a combination processor. The spectral noise power density estimation unit may provide a first estimate of the spectral noise power density of the audio signal. The correction term processor may provide a time dependent correction term based, at least in part, on a spectral noise power density estimation error of the actual spectral noise power density. The correction term may be determined so that the spectral noise power density estimation error is reduced. The combination processor may combine the first estimate with the correction term to obtain a second estimate of the spectral noise power density that may be used for subsequent signal processing to enhance a desired signal component of the audio signal.
摘要翻译：系统估计音频信号的频谱噪声功率密度包括频谱噪声功率密度估计单元，校正项处理器和组合处理器。频谱噪声功率密度估计单元可以提供音频信号的频谱噪声功率密度的第一估计。校正项处理器可以至少部分地基于实际频谱噪声功率密度的频谱噪声功率密度估计误差来提供时间相关校正项。可以确定校正项，使得谱噪声功率密度估计误差降低。组合处理器可以将第一估计与校正项组合以获得可用于后续信号处理以增强音频信号的期望信号分量的频谱噪声功率密度的第二估计。

59. 发明授权

US08238575B2 Determination of the coherence of audio signals 有权
标题翻译：确定音频信号的相干性
公开(公告)号：US08238575B2
公开(公告)日：2012-08-07
申请号：US12636432
申请日：2009-12-11
申请人： Markus Buck , Timo Matheja
发明人： Markus Buck , Timo Matheja
IPC分类号： H04B15/00
CPC分类号： G10L25/78 , G10L2021/02165
摘要： Embodiments of the invention disclose computer-implemented methods, systems, and computer program products for estimating signal coherence. First, a sound generated by a sound source is detected by a first microphone to obtain a first microphone signal and by a second microphone to obtain a second microphone signal. The first microphone signal is filtered by a first adaptive finite impulse response filter to obtain a first filtered signal. The second microphone signal is filtered by a second adaptive finite impulse response filter, to obtain a second filtered signal. The coherence of the first filtered signal and the second filtered signal is determined based upon the filtered signals. The first and the second microphone signals are filtered such that the difference between the acoustic transfer function for the transfer of the sound from the sound source to the first microphone and the transfer of the sound from the sound source to the second microphone is compensated in the first and second filtered signals.
摘要翻译：本发明的实施例公开了用于估计信号一致性的计算机实现的方法，系统和计算机程序产品。首先，由第一麦克风检测由声源产生的声音以获得第一麦克风信号，并由第二麦克风检测第二麦克风信号。第一麦克风信号被第一自适应有限脉冲响应滤波器滤波以获得第一滤波信号。第二麦克风信号被第二自适应有限脉冲响应滤波器滤波，以获得第二滤波信号。基于经滤波的信号确定第一滤波信号和第二滤波信号的相干性。第一麦克风信号和第二麦克风信号被滤波，以便在声音传输到第一麦克风的声音传递功能与声音从声源传输到第二麦克风之间的差异被补偿在第一和第二滤波信号。

60. 发明申请

US20100215184A1 Method for Determining a Set of Filter Coefficients for an Acoustic Echo Compensator 有权
标题翻译：用于确定声学回波补偿器的滤波器系数集的方法
公开(公告)号：US20100215184A1
公开(公告)日：2010-08-26
申请号：US12708172
申请日：2010-02-18
申请人： Markus Buck , Gerhard Schmidt , Tobias Wolff
发明人： Markus Buck , Gerhard Schmidt , Tobias Wolff
IPC分类号： H04B3/20
CPC分类号： H04R3/002 , G10L2021/02082 , H04M9/082 , H04R1/406 , H04R3/005 , H04R2430/20
摘要： The invention provides a method for determining a set of filter coefficients for an acoustic echo compensator in a beamformer arrangement. The acoustic echo compensator compensates for echoes within the beamformed signal. A plurality of sets of filter coefficients for the acoustic echo compensator is provided. Each set of filter coefficients corresponds to one of a predetermined number of steering directions of the beamformer arrangement. The predetermined number of steering directions is equal to or greater than the number of microphones in the microphone array. For a current steering direction, a current set of filter coefficients for the acoustic echo compensator is determined based on the provided sets of filter coefficients.
摘要翻译：本发明提供一种用于确定波束形成器布置中的声学回波补偿器的滤波器系数集合的方法。声回波补偿器补偿波束形成信号内的回波。提供了用于声学回声补偿器的多组滤波器系数。每组滤波器系数对应于波束形成器装置的预定数量的转向方向之一。预定数量的转向方向等于或大于麦克风阵列中的麦克风的数量。对于当前的转向方向，基于所提供的滤波器系数集合来确定用于声学回声补偿器的当前一组滤波器系数。

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