公开(公告)号：US20130034237A1

公开(公告)日：2013-02-07

申请号：US13560290

申请日：2012-07-27

申请人： Sverrir Olafsson ,  Jonathan Chien ,  Lorenzo Crespi ,  Trausti Thormundsson ,  James Bunde Villadsen Skov ,  Andrew B. Webster ,  Eitan David

发明人： Sverrir Olafsson ,  Jonathan Chien ,  Lorenzo Crespi ,  Trausti Thormundsson ,  James Bunde Villadsen Skov ,  Andrew B. Webster ,  Eitan David

IPC分类号： G10K11/16 ,  H04R1/10

CPC分类号： H04R1/406 ,  H04R1/10 ,  H04R1/1083

摘要： A system for improved audio in a headset comprising a first headset microphone generating a first signal. A second headset microphone generating a second signal. A multiplexer coupled to the first headset microphone and the second headset microphone for multiplexing the first signal and the second signal. A power extractor for extracting power for use by one or more of the multiplexer, the first headset microphone and the second headset microphone. A demultiplexer for extracting the first signal and the second signal. A signal processor for generating a noise reduced microphone signal. An audio subsystem for receiving the noise reduced microphone signal and for generating speaker signals for a first headphone speaker and a second headphone speaker.

摘要翻译： 一种用于改善耳机中的音频的系统，包括产生第一信号的第一耳机麦克风。 产生第二信号的第二耳机麦克风。 耦合到第一耳机麦克风的多路复用器和用于复用第一信号和第二信号的第二耳机麦克风。 一种功率提取器，用于提取由多路复用器，第一耳机麦克风和第二耳机麦克风中的一个或多个使用的功率。 一种解复用器，用于提取第一信号和第二信号。 一种用于产生噪声降低的麦克风信号的信号处理器。 用于接收噪声降低的麦克风信号并用于产生第一耳机扬声器和第二耳机扬声器的扬声器信号的音频子系统。

公开(公告)号：US20120250871A1

公开(公告)日：2012-10-04

申请号：US13431662

申请日：2012-03-27

申请人： Youhong Lu ,  Trausti Thormundsson

发明人： Youhong Lu ,  Trausti Thormundsson

IPC分类号： H04B3/20

CPC分类号： H04M9/082 ,  G10K11/16 ,  G10K2210/505 ,  H04B3/23

摘要： Presented is a method and associated system for suppression of linear and nonlinear echo. The method includes dividing an input signal into several frequency bands in each of a several of time frames. The input signal may include an echo signal. The method further includes multiplying the input signal in each of the several frequency bands by a corresponding echo suppression signal. Calculating the corresponding echo suppression signal may include estimating a power of the echo signal in a particular frequency band as a sum of several component echo powers, each of the several component echo powers due to an excitation from a far-end signal in a corresponding one of the several frequency bands. Calculating the corresponding echo suppression signal may further include subtracting the power of the echo signal in the particular frequency band from a power of the input signal in the particular frequency band.

摘要翻译： 提出了一种用于抑制线性和非线性回波的方法和相关系统。 该方法包括在几个时间帧的每一个中将输入信号划分成多个频带。 输入信号可以包括回波信号。 该方法还包括将相应的回波抑制信号乘以多个频带中的每一个中的输入信号。 计算相应的回波抑制信号可以包括：将特定频带内的回波信号的功率估计为若干分量回波功率之和，由于对应的一个远端信号的激励导致的几个分量回波功率中的每一个 的几个频带。 计算相应的回波抑制信号还可以包括从特定频带中的输入信号的功率中减去特定频带中的回波信号的功率。

公开(公告)号：US20100158267A1

公开(公告)日：2010-06-24

申请号：US12341777

申请日：2008-12-22

申请人： Trausti Thormundsson ,  Harry K. Lau ,  Yair Kerner

发明人： Trausti Thormundsson ,  Harry K. Lau ,  Yair Kerner

IPC分类号： H04R3/00

CPC分类号： H04R3/005

摘要： An apparatus for providing real-time calibration for two or more microphones. A calibrator for receiving a left microphone signal and a right microphone signal and generating phase difference data. A phase and amplitude correction system for receiving one of the left microphone signal or the right microphone signal the phase difference data and generating calibration data for a beamformer. The beamformer receiving the calibration data, the left microphone signal and the right microphone signal and generating a monaural beamformed signal.

摘要翻译： 一种用于为两个或更多麦克风提供实时校准的装置。 用于接收左麦克风信号和右麦克风信号并产生相位差数据的校准器。 用于接收左麦克风信号或右麦克风中的一个的相位和幅度校正系统向相位差数据发送信号并产生波束形成器的校准数据。 波束形成器接收校准数据，左麦克风信号和右麦克风信号，并产生单声道波束形成信号。

公开(公告)号：US09060217B2

公开(公告)日：2015-06-16

申请号：US13184231

申请日：2011-07-15

申请人： Trausti Thormundsson ,  Shlomi I. Regev ,  Govind Kannan ,  Harry K. Lau ,  James W. Wihardja ,  Ragnar H. Jonsson

发明人： Trausti Thormundsson ,  Shlomi I. Regev ,  Govind Kannan ,  Harry K. Lau ,  James W. Wihardja ,  Ragnar H. Jonsson

IPC分类号： G10K11/16 ,  H04R3/00 ,  H04R29/00

CPC分类号： H04R3/007 ,  H04R29/003 ,  H04R2499/11

摘要： A system and apparatus for constructing a displacement model across a frequency range for a loudspeaker is disclosed. The resultant displacement model is centered around the distortion point. Once a distortion model is constructed it can be incorporated into an audio driver to prevent distortion by incorporating the model and a distortion compensation unit with a conventional audio driver. Various topologies can be used to incorporate a distortion model and distortion compensation unit into an audio driver. Furthermore, a wide variety of distortion compensation techniques can be employed to avoid distortion in such an audio driver.

摘要翻译： 公开了一种用于在扬声器的频率范围内构造位移模型的系统和装置。 所得到的位移模型围绕失真点居中。 一旦构造了失真模型，它可以被并入到音频驱动器中，以通过将模型和具有常规音频驱动器的失真补偿单元结合在一起来防止失真。 可以使用各种拓扑结构将失真模型和失真补偿单元并入到音频驱动器中。 此外，可以采用各种失真补偿技术来避免这种音频驱动器中的失真。

公开(公告)号：US08253610B2

公开(公告)日：2012-08-28

申请号：US12932170

申请日：2011-02-17

申请人： Ragnar H Jonsson ,  Vilhjalmur S Thorvaldsson ,  Trausti Thormundsson

发明人： Ragnar H Jonsson ,  Vilhjalmur S Thorvaldsson ,  Trausti Thormundsson

IPC分类号： H03M7/00

CPC分类号： H03M5/02 ,  H03H17/0275 ,  H03H17/0642 ,  H03H17/0685

摘要： Poly-phase filters are used to offer an efficient and low complexity solution to rate conversion. However, they suffer from inflexibility and are not easily reconfigured. A novel design for rate converters employ poly-phase filters but utilize interpolation between filter coefficients to add flexibility to rate conversion. This interpolation can be implemented as an interpolation of the poly-phase filter results. Additional approximations can be made to further reduce the amount of calculations required to implement a flexible rate converter.

摘要翻译： 多相滤波器用于提供高效且低复杂度的速率转换解决方案。 但是，它们不灵活，不容易重新配置。 用于速率转换器的新颖设计采用多相滤波器，但是利用滤波器​​系数之间的内插来增加速率转换的灵活性。 该插值可以实现为多相滤波器结果的内插。 可以进行额外的近似以进一步减少实现灵活的速率转换器所需的计算量。

公开(公告)号：US08243952B2

公开(公告)日：2012-08-14

申请号：US12341777

申请日：2008-12-22

申请人： Trausti Thormundsson ,  Harry K. Lau ,  Yair Kerner

发明人： Trausti Thormundsson ,  Harry K. Lau ,  Yair Kerner

IPC分类号： H04R3/00

CPC分类号： H04R3/005

摘要： An apparatus for providing real-time calibration for two or more microphones. A calibrator for receiving a left microphone signal and a right microphone signal and generating phase difference data. A phase and amplitude correction system for receiving one of the left microphone signal or the right microphone signal the phase difference data and generating calibration data for a beamformer. The beamformer receiving the calibration data, the left microphone signal and the right microphone signal and generating a monaural beamformed signal.

摘要翻译： 一种用于为两个或更多麦克风提供实时校准的装置。 用于接收左麦克风信号和右麦克风信号并产生相位差数据的校准器。 用于接收左麦克风信号或右麦克风信号之一的相位和幅度校正系统向相位差数据发出信号并产生波束形成器的校准数据。 波束形成器接收校准数据，左麦克风信号和右麦克风信号，并产生单声道波束形成信号。

公开(公告)号：US20100321216A1

公开(公告)日：2010-12-23

申请号：US12488322

申请日：2009-06-19

申请人： Ragnar H. Jonsson ,  Vilhjalmur S. Thorvaldsson ,  Trausti Thormundsson

发明人： Ragnar H. Jonsson ,  Vilhjalmur S. Thorvaldsson ,  Trausti Thormundsson

IPC分类号： H03M7/00 ,  H04L27/06 ,  H04L7/00

CPC分类号： H03M5/02 ,  H03H17/0275 ,  H03H17/0642 ,  H03H17/0685

摘要： Poly-phase filters are used to offer an efficient and low complexity solution to rate conversion. However, they suffer from inflexibility and are not easily reconfigured. A novel design for rate converters employ poly-phase filters but utilize interpolation between filter coefficients to add flexibility to rate conversion. This interpolation can be implemented as an interpolation of the poly-phase filter results. Additional approximations can be made to further reduce the amount of calculations required to implement a flexible rate converter.

摘要翻译： 多相滤波器用于提供高效且低复杂度的速率转换解决方案。 但是，它们不灵活，不容易重新配置。 用于速率转换器的新颖设计采用多相滤波器，但是利用滤波器​​系数之间的内插来增加速率转换的灵活性。 该插值可以实现为多相滤波器结果的内插。 可以进行额外的近似以进一步减少实现灵活的速率转换器所需的计算量。

公开(公告)号：US09160864B2

公开(公告)日：2015-10-13

申请号：US13344510

申请日：2012-01-05

申请人： Ragnar H. Jonsson ,  Sverrir Olafsson ,  Trausti Thormundsson

发明人： Ragnar H. Jonsson ,  Sverrir Olafsson ,  Trausti Thormundsson

IPC分类号： H04M9/08

CPC分类号： H04M9/082

摘要： Acoustic echoes in communications systems are distracting and undesirable. Acoustic echoes occur in communications systems where sound produced by a speaker is picked up by a microphone in a communications system. In a stereo playback environment, echo cancellation techniques become more complicated. Echo cancellation can be performed by performing echo cancellation on a center signal, which is the sum of a left channel signal and the right channel signal, or left signal and a difference signal, which is the difference of the right channel signal and the left channel signal. The adaptation rates of the two echo cancellers meet certain constraints to prevent degeneracies in the echo cancellation system.

摘要翻译： 通信系统中的声学回声分散注意力和不良影响。 声学回声发生在通信系统中，其中扬声器产生的声音由通信系统中的麦克风拾取。 在立体声播放环境中，回声消除技术变得更加复杂。 可以通过对作为左声道信号和右声道信号或左声道信号的和的中心信号进行回波消除来进行回波消除，和作为右声道信号与左声道的差的差分信号 信号。 两个回波消除器的适应率满足某些限制，以防止回波消除系统中的退化。

公开(公告)号：US20130266158A1

公开(公告)日：2013-10-10

申请号：US13860477

申请日：2013-04-10

申请人： Mouna Elkhatib ,  Trausti Thormundsson ,  Jonathan Chien ,  Yair Kerner

发明人： Mouna Elkhatib ,  Trausti Thormundsson ,  Jonathan Chien ,  Yair Kerner

IPC分类号： H04R3/12

CPC分类号： H04R3/12 ,  H03F3/2175 ,  H04R3/02 ,  H04R2499/15

摘要： A system for processing audio data comprising an amplifier configured to receive an audio signal and to perform nonlinear processing on the audio signal. An encoder coupled to the amplifier, the encoder configured to receive the nonlinearly processed audio signal and to encode the nonlinearly processed audio signal into a data transmission format. A transmitter configured to receive and transmit the encoded nonlinearly processed audio signal. A receiver configured to receive the transmitted encoded nonlinearly processed audio signal and to decode the encoded nonlinearly processed audio signal. A digital voice processor configured to receive the nonlinearly processed audio signal and to use the nonlinearly processed audio signal for echo estimation and to subsequently subtract the estimated echo signal from a microphone signal.

摘要翻译： 一种用于处理音频数据的系统，包括被配置为接收音频信号并对音频信号执行非线性处理的放大器。 耦合到放大器的编码器，编码器被配置为接收非线性处理的音频信号并且将非线性处理的音频信号编码为数据传输格式。 发射器，被配置为接收和发送经编码的非线性处理的音频信号。 接收器，被配置为接收所发送的经编码的非线性处理的音频信号并解码编码的非线性处理的音频信号。 一种数字语音处理器，被配置为接收非线性处理的音频信号，并使用非线性处理的音频信号进行回波估计，并随后从麦克风信号中减去估计的回波信号。

公开(公告)号：US20130195277A1

公开(公告)日：2013-08-01

申请号：US13752058

申请日：2013-01-28

申请人： Govind Kannan ,  Harry K. Lau ,  Trausti Thormundsson ,  Ragnar H. Jonsson

发明人： Govind Kannan ,  Harry K. Lau ,  Trausti Thormundsson ,  Ragnar H. Jonsson

IPC分类号： H04R1/32

CPC分类号： H04R1/32 ,  H04R3/04 ,  H04R29/001 ,  H04R2430/03

摘要： A system for controlling distortion comprising a total harmonic distortion (THD) modeling system configured to apply a chirp signal to a system and to identify one or more frequency bands at which distortion is present, and to apply a ramping signal to identify for each of the one or more frequency bands an input signal level at which distortion is initiated, a signal processing system configured to receive an input signal, to determine whether frequency components are present in the input signal that are associated with the one or more frequency bands at which distortion is present, and to limit the amplitude of the input signal at the one or more frequency bands, such as by applying dynamic range compensation.

摘要翻译： 一种用于控制失真的系统，包括总谐波失真（THD）建模系统，其被配置为将啁啾信号施加到系统并且识别存在失真的一个或多个频带，并且应用斜坡信号来识别每个 一个或多个频带是发生失真的输入信号电平，被配置为接收输入信号的信号处理系统，以确定频率分量是否存在于与一个或多个频带相关联的输入信号中，在该失真 存在，并且通过应用动态范围补偿来限制在一个或多个频带处的输入信号的幅度。