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：US08194872B2

公开(公告)日：2012-06-05

申请号：US11234837

申请日：2005-09-23

申请人： Markus Buck ,  Tim Haulick ,  Phillip A. Hetherington ,  Pierre Zakarauskas

发明人： Markus Buck ,  Tim Haulick ,  Phillip A. Hetherington ,  Pierre Zakarauskas

IPC分类号： A61F11/06 ,  H04B15/00 ,  H04R1/40

CPC分类号： G10L21/0208 ,  G10L21/0216 ,  G10L2021/02166 ,  H04R3/005 ,  H04R2430/25

摘要： An adaptive signal processing system eliminates noise from input signals while retaining desired signal content, such as speech. The resulting low noise output signal delivers improved clarity and intelligibility. The low noise output signal also improves the performance of subsequent signal processing systems, including speech recognition systems. An adaptive beamformer in the signal processing system consistently updates beamforming signal weights in response to changing microphone signal conditions. The adaptive weights emphasize the contribution of high energy microphone signals to the beamformed output signal. In addition, adaptive noise cancellation logic removes residual noise from the beamformed output signal based on a noise estimate derived from the microphone input signals.

摘要翻译： 自适应信号处理系统消除来自输入信号的噪声，同时保留期望的信号内容，例如语音。 所产生的低噪声输出信号提供了更好的清晰度和清晰度。 低噪声输出信号还提高了后续信号处理系统的性能，包括语音识别系统。 信号处理系统中的自适应波束形成器响应于变化的麦克风信号状况持续更新波束成形信号权重。 自适应权重强调高能麦克风信号对波束形成的输出信号的贡献。 此外，自适应噪声消除逻辑基于从麦克风输入信号导出的噪声估计，从波束形成的输出信号中去除残余噪声。

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：US20110026732A1

公开(公告)日：2011-02-03

申请号：US12843632

申请日：2010-07-26

申请人： Markus Buck ,  Tim Haulick

发明人： Markus Buck ,  Tim Haulick

IPC分类号： H04R3/00

CPC分类号： H04R29/005 ,  G10L21/0216 ,  G10L21/0232 ,  G10L2021/02166 ,  H04R3/005 ,  H04R2410/07 ,  H04R2430/20

摘要： A system for detecting noise in a signal received by a microphone array and a method for detecting noise in a signal received by a microphone array is disclosed. The system also provides for the reduction of noise in a signal received by a microphone array and a method for reducing noise in a signal received by a microphone array. The signal to noise ratio in handsfree systems may be improved, particularly in handsfree systems present in a vehicular environment.

摘要翻译： 公开了一种用于检测由麦克风阵列接收的信号中的噪声的系统和用于检测由麦克风阵列接收的信号中的噪声的方法。 该系统还提供了降低由麦克风阵列接收的信号中的噪声以及用于降低由麦克风阵列接收的信号中的噪声的方法。 免提系统中的信噪比可以得到改善，特别是在车辆环境中的免提系统中。

公开(公告)号：US20090125311A1

公开(公告)日：2009-05-14

申请号：US11865930

申请日：2007-10-02

申请人： Tim Haulick ,  Markus Buck ,  Marcus Hennecke

发明人： Tim Haulick ,  Markus Buck ,  Marcus Hennecke

IPC分类号： G10L11/00

CPC分类号： B60R16/0373

摘要： A vehicular voice control system includes a first and a second microphone located on a vehicle external to a vehicle cabin. The microphones receive audio signals from an audio source external to the vehicle and generate microphone output signals. A signal processor processes the microphone output signals, generates a processed signal, and determines a location of the audio source. A speech recognition system receives the processed signal and obtains a recognition result. A controller controls one or more vehicular elements based on the recognition result and the determined location of the audio source.

摘要翻译： 车辆语音控制系统包括位于车辆外部的车辆上的第一和第二麦克风。 麦克风从车辆外部的音频源接收音频信号，并产生麦克风输出信号。 信号处理器处理麦克风输出信号，产生经处理的信号，并确定音频源的位置。 语音识别系统接收经处理的信号并获得识别结果。 控制器基于识别结果和确定的音频源的位置来控制一个或多个车辆元件。

公开(公告)号：US20060222184A1

公开(公告)日：2006-10-05

申请号：US11234837

申请日：2005-09-23

申请人： Markus Buck ,  Tim Haulick ,  Phillip Hetherington ,  Pierre Zakarauskas

发明人： Markus Buck ,  Tim Haulick ,  Phillip Hetherington ,  Pierre Zakarauskas

IPC分类号： A61F11/06 ,  G10K11/16 ,  H03B29/00

CPC分类号： G10L21/0208 ,  G10L21/0216 ,  G10L2021/02166 ,  H04R3/005 ,  H04R2430/25

摘要： An adaptive signal processing system eliminates noise from input signals while retaining desired signal content, such as speech. The resulting low noise output signal delivers improved clarity and intelligibility. The low noise output signal also improves the performance of subsequent signal processing systems, including speech recognition systems. An adaptive beamformer in the signal processing system consistently updates beamforming signal weights in response to changing microphone signal conditions. The adaptive weights emphasize the contribution of high energy microphone signals to the beamformed output signal. In addition, adaptive noise cancellation logic removes residual noise from the beamformed output signal based on a noise estimate derived from the microphone input signals.

摘要翻译： 自适应信号处理系统消除来自输入信号的噪声，同时保留期望的信号内容，例如语音。 所产生的低噪声输出信号提供了更好的清晰度和清晰度。 低噪声输出信号还提高了后续信号处理系统的性能，包括语音识别系统。 信号处理系统中的自适应波束形成器响应于变化的麦克风信号状况持续更新波束成形信号权重。 自适应权重强调高能麦克风信号对波束形成的输出信号的贡献。 此外，自适应噪声消除逻辑基于从麦克风输入信号导出的噪声估计，从波束形成的输出信号中去除残余噪声。

公开(公告)号：US06643619B1

公开(公告)日：2003-11-04

申请号：US09530527

申请日：2000-06-20

申请人： Klaus Linhard ,  Tim Haulick

发明人： Klaus Linhard ,  Tim Haulick

IPC分类号： G10L1520

CPC分类号： G10L21/02

摘要： A method for reducing interference in acoustic signals by using of an adaptive filter method involving spectral subtraction. The inventive method enables a significant reduction of interference in acoustic signals, especially voice signals, without causing any substantial falsification of said signals such as echo or musical tones, and significantly reduces computational requirements in comparison with other methods known per se that are similarly designed to improve signal quality.

摘要翻译： 一种通过使用涉及频谱减法的自适应滤波方法来减少声信号干扰的方法。 本发明的方法能够显着降低声信号，特别是语音信号的干扰，而不会导致诸如回声或音调之类的所述信号的任何实质性伪造，并且与本身已知的本身已知的其它方法相比，显着降低计算要求， 提高信号质量。

公开(公告)号：US09992572B2

公开(公告)日：2018-06-05

申请号：US11832445

申请日：2007-08-01

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

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

IPC分类号： H04R3/04 ,  H04M9/08 ,  G10L21/0208

CPC分类号： H04R3/04 ,  G10K2210/506 ,  G10L21/0208 ,  G10L2021/02082 ,  H04M9/082 ,  H04R2430/03

摘要： A system used in a loudspeaker-room-microphone environment includes a microphone signal partitioner that divides a signal from a microphone into one or more divided portions. A reverberation energy estimator estimates reverberation energy in some of the divided portions of the microphone signal based on a loudspeaker signal. The estimated reverberation energy is processed to generate a dereverberated output signal.