公开(公告)号：US09111544B2

公开(公告)日：2015-08-18

申请号：US13368092

申请日：2012-02-07

申请人： Gerhard Uwe Schmidt ,  Tim Haulick ,  Harald Lenhardt

发明人： Gerhard Uwe Schmidt ,  Tim Haulick ,  Harald Lenhardt

IPC分类号： G10L21/02 ,  H04B3/20 ,  H04R3/12 ,  H04R3/02 ,  G10L21/0208

CPC分类号： G10L21/02 ,  G10L2021/02082 ,  H04R3/02 ,  H04R2499/13

摘要： A system and method for compensating audio signal components is disclosed. The method includes detecting, by a microphone, a sound signal. The sound signal comprises audio signal components resulting from reproducing an audio signal of an audio source and speech signal components corresponding to a speech signal from a person. The sound signal is filtered to whiten the sound signal. The audio signal components in the whitened sound signal are then compensated. The whitening of the compensated sound signal is removed. The filtering of the audio signal is performed using at least two filters in an alternating way, each filter using time-dependent filter coefficients.

摘要翻译： 公开了用于补偿音频信号分量的系统和方法。 该方法包括通过麦克风检测声音信号。 该声音信号包括从再现音频源的音频信号和对应于来自人的语音信号的语音信号分量产生的音频信号分量。 声音信号被过滤以使声音信号变白。 然后补偿白化的声音信号中的音频信号分量。 消除补偿声音信号的白化。 使用至少两个滤波器以交替方式来执行音频信号的滤波，每个滤波器使用时间依赖滤波器系数。

公开(公告)号：US08565415B2

公开(公告)日：2013-10-22

申请号：US12246994

申请日：2008-10-07

申请人： Gerhard Uwe Schmidt ,  Bernd Iser

发明人： Gerhard Uwe Schmidt ,  Bernd Iser

IPC分类号： H04M9/08

CPC分类号： H04M9/082 ,  G10L2021/02082 ,  H04M1/6075

摘要： A signal processing system enhances communication. When an audio signal is detected, an echo component of the detected audio signal may be estimated. A near party communication device may receive an audio signal from a remote party communication device. A characteristic of the received audio signal may be adjusted based on the echo component of the detected audio signal.

摘要翻译： 信号处理系统增强通信。 当检测到音频信号时，可以估计检测到的音频信号的回波分量。 近端通信设备可以从远端方通信设备接收音频信号。 可以基于检测到的音频信号的回波分量来调整所接收的音频信号的特性。

公开(公告)号：US08401489B2

公开(公告)日：2013-03-19

申请号：US12202129

申请日：2008-08-29

申请人： Gerhard Uwe Schmidt ,  Guido Kolano

发明人： Gerhard Uwe Schmidt ,  Guido Kolano

IPC分类号： H04B17/00

CPC分类号： H04M1/6075 ,  H04B17/21 ,  H04M1/24

摘要： A calibration device automatically calibrates a telephone hands free system. The device includes a signal processor that processes a received telephone signal that may be converted into audible sound through the hands free system. A first telephone and a second telephone communicate with the signal processor. The first telephone is programmed to transmit a predetermined test signal to the second telephone through a wireless or physical medium. A comparator compares the received test signal to a predetermined reference signal at a hands free interface. The comparison determines a deviation from the reference signal. An adaptor modifies the processing of the digitized aural information based on the deviation.

摘要翻译： 校准设备自动校准电话免提系统。 该装置包括信号处理器，其处理可以通过免提系统转换成可听见的声音的接收到的电话信号。 第一电话和第二电话与信号处理器通信。 第一电话被编程为通过无线或物理介质将预定的测试信号发送到第二电话。 比较器将接收到的测试信号与免提接口处的预定参考信号进行比较。 比较确定与参考信号的偏差。 适配器根据偏差修改数字化听觉信息的处理。

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。

公开(公告)号：US08306815B2

公开(公告)日：2012-11-06

申请号：US11951904

申请日：2007-12-06

申请人： Lars König ,  Gerhard Uwe Schmidt ,  Andreas Löw

发明人： Lars König ,  Gerhard Uwe Schmidt ,  Andreas Löw

IPC分类号： G06F15/00 ,  G10L11/00 ,  G10L21/02 ,  G10L15/20

CPC分类号： G10L21/02 ,  G10L15/22

摘要： A speech dialog system interfaces a user to a computer. The system includes a signal pre-processor that processes a speech input to generate an enhanced signal and an analysis signal. A speech recognition unit may generate a recognition result based on the enhanced signal. A control unit may manage an output unit or an external device based on the information within the analysis signal.

摘要翻译： 语音对话系统将用户与计算机接口。 该系统包括处理语音输入以产生增强信号和分析信号的信号预处理器。 语音识别单元可以基于增强信号生成识别结果。 控制单元可以基于分析信号内的信息来管理输出单元或外部设备。

公开(公告)号：US08275145B2

公开(公告)日：2012-09-25

申请号：US11740164

申请日：2007-04-25

申请人： Markus Buck ,  Tim Haulick ,  Gerhard Uwe Schmidt

发明人： Markus Buck ,  Tim Haulick ,  Gerhard Uwe Schmidt

IPC分类号： H04B1/00 ,  H04R3/00

CPC分类号： H04R27/00 ,  H04R2499/13 ,  H04S7/301 ,  H04S7/303

摘要： The present invention relates to a vehicle communication system comprising a plurality of microphones adapted to detect speech signals of different vehicle passengers, a mixer combining the audio signal components of the different microphones to a resulting speech output signal, a weighting unit determining the weighting of the audio signal components for the resulting speech output signal, where the weighting unit determines the weighting of the signal components based upon non-acoustical information about the presence of a vehicle passenger.

摘要翻译： 车载通信系统技术领域本发明涉及一种车辆通信系统，其特征在于，包括：适合于检测不同车辆乘客的语音信号的多个麦克风;混合不同麦克风的音频信号分量与合成语音输出信号的混合器;加权单元， 用于所得语音输出信号的音频信号分量，其中加权单元基于关于车辆乘客的存在的非声学信息来确定信号分量的加权。

公开(公告)号：US08194852B2

公开(公告)日：2012-06-05

申请号：US11955862

申请日：2007-12-13

申请人： Markus Buck ,  Tim Haulick ,  Martin Rössler ,  Gerhard Uwe Schmidt ,  Walter Schnug

发明人： Markus Buck ,  Tim Haulick ,  Martin Rössler ,  Gerhard Uwe Schmidt ,  Walter Schnug

IPC分类号： H04M9/08

CPC分类号： H04M9/082

摘要： An echo reduction system includes a signal analysis filter that converts an input into sub-band signals. A signal down-sampling circuit down-samples the sub-band signals at a first down-sampling rate. An echo analysis filter converts a loudspeaker signal into echo sub-band signal that are further processed by an echo down-sampling circuit. The circuit down-samples the echo sub-band signals at a second down-sampling rate to generate down-sampled echo sub-band signals. An echo compensation filter folds the down-sampled echo sub-band signals with an estimated impulse response of a loudspeaker-room-input system. A second echo down-sampling circuit down-samples the folded down-sampled echo sub-band signals at a third down-sampling rate to generate estimated echo sub-band signals. The first down-sampling rate is equal to the product of the second and third down-sampling rates.

摘要翻译： 回波减少系统包括将输入转换为子带信号的信号分析滤波器。 信号下采样电路以第一下采样率对子带信号进行下采样。 回波分析滤波器将扬声器信号转换成由回波下采样电路进一步处理的回波子带信号。 电路以第二次下采样率对回波子带信号进行下采样以产生下采样的回波子带信号。 回波补偿滤波器用扬声器室输入系统的估计的脉冲响应折叠下采样的回波子带信号。 第二回波下采样电路以三次下采样率对折叠的下采样回波子带信号进行下采样，以产生估计的回波子带信号。 第一个下采样率等于第二次和第三次下采样率的乘积。

公开(公告)号：US08111840B2

公开(公告)日：2012-02-07

申请号：US11788069

申请日：2007-04-18

申请人： Tim Haulick ,  Gerhard Uwe Schmidt ,  Martin Roessler

发明人： Tim Haulick ,  Gerhard Uwe Schmidt ,  Martin Roessler

IPC分类号： H04B15/00 ,  H04R3/00 ,  H04R27/00 ,  H04R25/00 ,  G10L15/20

CPC分类号： H04M9/082

摘要： A system for reducing an echo and/or a residual echo in a microphone output signal includes an echo compensation filter configured to receive audio input signals and generate an estimated echo signal. A speech activity detector is configured to detect speech of a local speaker, and a combining circuit is configured to generate an echo compensated signal by subtracting the estimated echo signal from the microphone output signal. A residual echo reduction circuit is configured to suppress the residual echo in the echo compensated signal based on the detected speech activity, and output an echo suppressed output signal. The echo reduction system may reduce local background noise and residual echoes in a microphone output signal so that local speech may be transmitted free from undesirable signals.

摘要翻译： 用于减少麦克风输出信号中的回波和/或残留回声的系统包括被配置为接收音频输入信号并产生估计的回波信号的回波补偿滤波器。 语音活动检测器被配置为检测本地扬声器的语音，并且组合电路被配置为通过从麦克风输出信号减去估计的回波信号来产生回波补偿信号。 残余回波降低电路被配置为基于检测到的语音活动来抑制回波补偿信号中的残留回波，并输出回波抑制输出信号。 回波减少系统可以减少麦克风输出信号中的本地背景噪声和残留回波，使得可以从不期望的信号中传送本地语音。

公开(公告)号：US20120009878A1

公开(公告)日：2012-01-12

申请号：US13240424

申请日：2011-09-22

申请人： Markus Buck ,  Tim Haulick ,  Gerhard Uwe Schmidt ,  Michael Tropp

发明人： Markus Buck ,  Tim Haulick ,  Gerhard Uwe Schmidt ,  Michael Tropp

IPC分类号： H04W88/00

CPC分类号： H04M1/6083 ,  H04M9/001 ,  H04M2250/02 ,  H04R2420/07 ,  H04R2499/13 ,  H04W4/04 ,  H04W88/02

摘要： A vehicle communication system detects the presence of a passenger wearable communication device. The system receives audio signals from multiple sources inside or outside of a vehicle. The system processes the signals before routing the signals to multiple destinations. The destinations may include wearable personal communication devices, front and/or rear speakers, and/or a remote mobile device.

摘要翻译： 车辆通信系统检测乘客可穿戴通信设备的存在。 该系统从车辆内部或外部的多个源接收音频信号。 在将信号路由到多个目的地之前，系统处理信号。 目的地可以包括穿戴式个人通信设备，前置和/或后置扬声器和/或远程移动设备。

公开(公告)号：US08050914B2

公开(公告)日：2011-11-01

申请号：US12269605

申请日：2008-11-12

申请人： Gerhard Uwe Schmidt ,  Mohamed Krini

发明人： Gerhard Uwe Schmidt ,  Mohamed Krini

IPC分类号： G10L21/02

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。