公开(公告)号：US20100036659A1

公开(公告)日：2010-02-11

申请号：US12537749

申请日：2009-08-07

申请人： Tim Haulick ,  Mohamed Krini ,  Shreyas Paranjpe ,  Gerhard Schmidt

发明人： Tim Haulick ,  Mohamed Krini ,  Shreyas Paranjpe ,  Gerhard Schmidt

IPC分类号： G10L21/02 ,  G10L15/20 ,  H04R3/00 ,  H04B15/00

CPC分类号： G10L19/012 ,  G10L21/0208

摘要： The present invention relates to a method for signal processing comprising the steps of providing a set of prototype spectral envelopes, providing a set of reference noise prototypes, wherein the reference noise prototypes are obtained from at least a sub-set of the provided set of prototype spectral envelopes, detecting a verbal utterance by at least one microphone to obtain a microphone signal, processing the microphone signal for noise reduction based on the provided reference noise prototypes to obtain an enhanced signal and encoding the enhanced signal based on the provided prototype spectral envelopes to obtain an encoded enhanced signal.

摘要翻译： 本发明涉及一种用于信号处理的方法，包括以下步骤：提供一组原型频谱包络，提供一组参考噪声原型，其中参考噪声原型从所提供的一组原型的至少一个子集获得 通过至少一个麦克风检测语音话语以获得麦克风信号，基于所提供的参考噪声原型处理麦克风信号以进行噪声降低，以获得增强信号，并基于所提供的原型频谱包络对增强信号进行编码， 获得编码的增强信号。

公开(公告)号：US20130208905A1

公开(公告)日：2013-08-15

申请号：US13591667

申请日：2012-08-22

申请人： Mohamed Krini ,  Gerhard Schmidt ,  Bernd Iser ,  Arthur Wolf

发明人： Mohamed Krini ,  Gerhard Schmidt ,  Bernd Iser ,  Arthur Wolf

IPC分类号： G10L21/0208

CPC分类号： G10L21/0208 ,  G10K11/002 ,  G10L19/0204 ,  G10L21/02 ,  G10L2021/02082

摘要： Embodiments of the present invention exploit redundancy of succeeding FFT spectra and use this redundancy for computing interpolated temporal supporting points. An analysis filter bank converts overlapped sequences of an audio (ex. loudspeaker) signal from a time domain to a frequency domain to obtain a time series of short-time loudspeaker spectra. An interpolator temporally interpolates this time series. The interpolation is fed to an echo canceller, which computes an estimated echo spectrum. A microphone analysis filter bank converts overlapped sequences of an audio microphone signal from the time domain to the frequency domain to obtain a time series of short-time microphone spectra. The estimated echo spectrum is subtracted from the microphone spectrum. Further signal enhancement (filtration) may be applied. A synthesis filter bank converts the filtered microphone spectra to the time domain to generate an echo compensated audio microphone signal. Computational complexity of signal processing systems can, therefore, be reduced.

摘要翻译： 本发明的实施例利用后续FFT频谱的冗余并使用该冗余来计算内插的时间支持点。 分析滤波器组将来自时域的音频（例如扬声器）信号的重叠序列转换为频域以获得短时间扬声器频谱的时间序列。 内插器对时间序列进行时间插值。 内插被馈送到回波消除器，该消除器计算估计的回波频谱。 麦克风分析滤波器组将音频麦克风信号的重叠序列从时域转换到频域，以获得短时间麦克风频谱的时间序列。 从麦克风频谱中减去估计回波频谱。 可以应用进一步的信号增强（过滤）。 合成滤波器组将滤波的麦克风谱转换为时域以产生回波补偿的音频麦克风信号。 因此，可以减少信号处理系统的计算复杂度。

公开(公告)号：US09076455B2

公开(公告)日：2015-07-07

申请号：US13591667

申请日：2012-08-22

申请人： Mohamed Krini ,  Gerhard Schmidt ,  Bernd Iser ,  Arthur Wolf

发明人： Mohamed Krini ,  Gerhard Schmidt ,  Bernd Iser ,  Arthur Wolf

IPC分类号： G10L21/0208 ,  G10K11/00 ,  G10L21/02 ,  G10L19/02

CPC分类号： G10L21/0208 ,  G10K11/002 ,  G10L19/0204 ,  G10L21/02 ,  G10L2021/02082

摘要： Embodiments of the present invention exploit redundancy of succeeding FFT spectra and use this redundancy for computing interpolated temporal supporting points. An analysis filter bank converts overlapped sequences of an audio (ex. loudspeaker) signal from a time domain to a frequency domain to obtain a time series of short-time loudspeaker spectra. An interpolator temporally interpolates this time series. The interpolation is fed to an echo canceller, which computes an estimated echo spectrum. A microphone analysis filter bank converts overlapped sequences of an audio microphone signal from the time domain to the frequency domain to obtain a time series of short-time microphone spectra. The estimated echo spectrum is subtracted from the microphone spectrum. Further signal enhancement (filtration) may be applied. A synthesis filter bank converts the filtered microphone spectra to the time domain to generate an echo compensated audio microphone signal. Computational complexity of signal processing systems can, therefore, be reduced.

公开(公告)号：US09026435B2

公开(公告)日：2015-05-05

申请号：US12772562

申请日：2010-05-03

申请人： Mohamed Krini ,  Gerhard Schmidt

发明人： Mohamed Krini ,  Gerhard Schmidt

IPC分类号： G10L19/09 ,  G10L25/90 ,  G10L21/0216

CPC分类号： G10L25/90 ,  G10L2021/02168

摘要： The invention provides a method for estimating a fundamental frequency of a speech signal comprising the steps of receiving a signal spectrum of the speech signal, filtering the signal spectrum to obtain a refined signal spectrum, determining a cross-power spectral density using the refined signal spectrum and the signal spectrum, transforming the cross-power spectral density into the time domain to obtain a cross-correlation function, and estimating the fundamental frequency of the speech signal based on the cross-correlation function.

摘要翻译： 本发明提供了一种用于估计语音信号的基频的方法，包括以下步骤：接收语音信号的信号频谱，滤波信号频谱以获得精细的信号频谱，使用精细的信号频谱确定交叉功率频谱密度 和信号频谱，将交叉功率谱密度变换成时域以获得互相关函数，并且基于互相关函数估计语音信号的基频。

公开(公告)号：US08666736B2

公开(公告)日：2014-03-04

申请号：US12537749

申请日：2009-08-07

申请人： Tim Haulick ,  Mohamed Krini ,  Shreyas Paranjpe ,  Gerhard Schmidt

发明人： Tim Haulick ,  Mohamed Krini ,  Shreyas Paranjpe ,  Gerhard Schmidt

IPC分类号： G10L21/00

CPC分类号： G10L19/012 ,  G10L21/0208

摘要： The present invention relates to a method for signal processing comprising the steps of providing a set of prototype spectral envelopes, providing a set of reference noise prototypes, wherein the reference noise prototypes are obtained from at least a sub-set of the provided set of prototype spectral envelopes, detecting a verbal utterance by at least one microphone to obtain a microphone signal, processing the microphone signal for noise reduction based on the provided reference noise prototypes to obtain an enhanced signal and encoding the enhanced signal based on the provided prototype spectral envelopes to obtain an encoded enhanced signal.

摘要翻译： 本发明涉及一种用于信号处理的方法，包括以下步骤：提供一组原型频谱包络，提供一组参考噪声原型，其中参考噪声原型从所提供的一组原型的至少一个子集获得 通过至少一个麦克风检测语音话语以获得麦克风信号，基于所提供的参考噪声原型处理麦克风信号以进行噪声降低，以获得增强信号，并且基于所提供的原型频谱包络对增强信号进行编码， 获得编码的增强信号。

公开(公告)号：US08849656B2

公开(公告)日：2014-09-30

申请号：US13273890

申请日：2011-10-14

申请人： Gerhard Schmidt ,  Mohamed Krini

发明人： Gerhard Schmidt ,  Mohamed Krini

IPC分类号： G10L21/02 ,  G10L21/0208 ,  H04R3/00 ,  G10L21/0216 ,  G10L21/0264

CPC分类号： H04R3/005 ,  G10L21/0208 ,  G10L21/0264 ,  G10L2021/02165 ,  H04R2410/05 ,  H04R2410/07 ,  H04R2499/11 ,  H04R2499/13

摘要： A system enhances speech by detecting a speaker's utterance through a first microphone positioned a first distance from a source of interference. A second microphone may detect the speaker's utterance at a different position. A monitoring device may estimate the power level of a first microphone signal. A synthesizer may synthesize part of the first microphone signal by processing the second microphone signal. The synthesis may occur when power level is below a predetermined level.

摘要翻译： 通过从位于距离干扰源的第一距离的第一麦克风检测扬声器的话语来增强语音。 第二麦克风可以在不同的位置检测说话者的话语。 监视装置可以估计第一麦克风信号的功率电平。 合成器可以通过处理第二麦克风信号来合成第一麦克风信号的一部分。 当功率水平低于预定水平时，合成可能发生。

公开(公告)号：US20100286981A1

公开(公告)日：2010-11-11

申请号：US12772562

申请日：2010-05-03

申请人： Mohamed Krini ,  Gerhard Schmidt

发明人： Mohamed Krini ,  Gerhard Schmidt

IPC分类号： G10L21/00

CPC分类号： G10L25/90 ,  G10L2021/02168

摘要： The invention provides a method for estimating a fundamental frequency of a speech signal comprising the steps of receiving a signal spectrum of the speech signal, filtering the signal spectrum to obtain a refined signal spectrum, determining a cross-power spectral density using the refined signal spectrum and the signal spectrum, transforming the cross-power spectral density into the time domain to obtain a cross-correlation function, and estimating the fundamental frequency of the speech signal based on the cross-correlation function.

摘要翻译： 本发明提供了一种用于估计语音信号的基频的方法，包括以下步骤：接收语音信号的信号频谱，滤波信号频谱以获得精细的信号频谱，使用精细的信号频谱确定交叉功率频谱密度 和信号频谱，将交叉功率谱密度变换成时域以获得互相关函数，并且基于互相关函数估计语音信号的基频。

公开(公告)号：US08787560B2

公开(公告)日：2014-07-22

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： H04M9/08 ,  G01S15/00 ,  H04R3/00

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。

公开(公告)号：US08735981B2

公开(公告)日：2014-05-27

申请号：US12486471

申请日：2009-06-17

申请人： Gerhard Schmidt

发明人： Gerhard Schmidt

IPC分类号： H01L29/66

CPC分类号： H01L29/802 ,  H01L29/0696 ,  H01L29/408 ,  H01L29/432 ,  H01L29/66431 ,  H01L29/739

摘要： Disclosed is a transistor component having a control structure with a channel control layer of an amorphous semiconductor insulating material extending in a current flow direction along a channel zone.

摘要翻译： 公开了一种具有控制结构的晶体管组件，其具有沿着沟道区沿电流流动方向延伸的非晶半导体绝缘材料的沟道控制层。

公开(公告)号：US20120174818A1

公开(公告)日：2012-07-12

申请号：US13496731

申请日：2010-09-16

申请人： Udo Bremkamp ,  Gerhard Schmidt

发明人： Udo Bremkamp ,  Gerhard Schmidt

IPC分类号： B61D17/00

CPC分类号： B61D17/06

摘要： A railway vehicle has a cover for a front coupling of the railway vehicle. The cover is formed of at least one displaceable front hatch that can be displaced by a drive between an opened and a closed end position. A displacement of the at least one front hatch is guided such that the displacement takes place along a circular segment path about a rotary axis.

摘要翻译： 铁路车辆具有用于铁路车辆的前联接器的盖。 所述盖由至少一个可移位的前舱口形成，所述至少一个可移动的前舱口可以由打开位置和闭合端位置之间的驱动器移位。 引导至少一个前舱口的位移，使得沿着围绕旋转轴线的圆形段路径发生位移。