公开(公告)号：US20110013766A1

公开(公告)日：2011-01-20

申请号：US12503345

申请日：2009-07-15

申请人： Roman A. Dyba ,  Hongyang Deng ,  Wen Wu Su

发明人： Roman A. Dyba ,  Hongyang Deng ,  Wen Wu Su

IPC分类号： H04M9/08

CPC分类号： H04M9/082 ,  H04Q1/453

摘要： A system includes receive and send inputs, an adaptive filter, a combiner, a non-linear processor, and a tone detector. The receive input receives a first signal having first voice and first tone information. The send input receives a second signal having echo information, second tone information, and second voice information. The adaptive filter has an input coupled to the receive input, and an output. The combiner has a first input coupled to the send input, a second input coupled to the output of the adaptive filter, and an output providing an intermediate signal. The nonlinear processor has an input coupled to the output of the combiner and an output for providing an output signal for obtaining the second voice. The tone detector is coupled to the output of the combiner and detects the second tone in the intermediate signal prior to the intermediate signal being processed by the nonlinear processor.

摘要翻译： 系统包括接收和发送输入，自适应滤波器，组合器，非线性处理器和音调检测器。 接收输入接收具有第一语音和第一音调信息的第一信号。 发送输入接收具有回波信息，第二音调信息和第二语音信息的第二信号。 自适应滤波器具有耦合到接收输入的输入和输出。 组合器具有耦合到发送输入的第一输入，耦合到自适应滤波器的输出的第二输入和提供中间信号的输出。 非线性处理器具有耦合到组合器的输出的输入和用于提供用于获得第二语音的输出信号的输出。 音调检测器耦合到组合器的输出，并且在由非线性处理器处理中间信号之前检测中间信号中的第二音调。

公开(公告)号：US20110261949A1

公开(公告)日：2011-10-27

申请号：US12768366

申请日：2010-04-27

申请人： Roman A. Dyba ,  Wen Wu Su ,  Hongyang Deng

发明人： Roman A. Dyba ,  Wen Wu Su ,  Hongyang Deng

IPC分类号： H04M9/08

CPC分类号： H04B3/23

摘要： A technique for detecting in-band signaling tones in a communication system includes performing a first adaptation of an adaptive filter of an echo canceller in response to detection of a far-end harmonic signal. In this case, the adaptive filter provides an echo estimation signal. The technique also includes subtracting the echo estimation signal from a near-end signal that includes one or more in-band signaling tones to provide an error signal. The technique further includes detecting, using a tone detector, the one or more in-band signaling tones in the error signal.

摘要翻译： 用于检测通信系统中的带内信令音的技术包括：响应于远端谐波信号的检测，执行回波消除器的自适应滤波器的第一自适应。 在这种情况下，自适应滤波器提供回波估计信号。 该技术还包括从包括一个或多个带内信令音调的近端信号中减去回波估计信号以提供误差信号。 该技术还包括使用音调检测器检测误差信号中的一个或多个带内信令音调。

公开(公告)号：US08787561B2

公开(公告)日：2014-07-22

申请号：US12768366

申请日：2010-04-27

申请人： Roman A. Dyba ,  Wen Wu Su ,  Hongyang Deng

发明人： Roman A. Dyba ,  Wen Wu Su ,  Hongyang Deng

IPC分类号： H04M9/08

CPC分类号： H04B3/23

摘要： A technique for detecting in-band signaling tones in a communication system includes performing a first adaptation of an adaptive filter of an echo canceller in response to detection of a far-end harmonic signal. In this case, the adaptive filter provides an echo estimation signal. The technique also includes subtracting the echo estimation signal from a near-end signal that includes one or more in-band signaling tones to provide an error signal. The technique further includes detecting, using a tone detector, the one or more in-band signaling tones in the error signal.

摘要翻译： 用于检测通信系统中的带内信令音的技术包括：响应于远端谐波信号的检测，执行回波消除器的自适应滤波器的第一自适应。 在这种情况下，自适应滤波器提供回波估计信号。 该技术还包括从包括一个或多个带内信令音调的近端信号中减去回波估计信号以提供误差信号。 该技术还包括使用音调检测器检测误差信号中的一个或多个带内信令音调。

公开(公告)号：US08693677B2

公开(公告)日：2014-04-08

申请号：US12768275

申请日：2010-04-27

申请人： Hongyang Deng ,  Roman A. Dyba ,  Wen Wu Su

发明人： Hongyang Deng ,  Roman A. Dyba ,  Wen Wu Su

IPC分类号： H04M9/08 ,  H04M1/00 ,  H04M9/00 ,  H04B3/20

CPC分类号： H04B3/23

摘要： A technique for updating filter coefficients of an adaptive filter includes filtering a signal with an adaptive filter, whose filter coefficients are grouped into filter blocks. In this case a number of the filter blocks is less than or equal to a number of the filter coefficients. During each update period, the filter coefficients for less than all of the filter blocks are updated based on a network echo path impulse response.

摘要翻译： 用于更新自适应滤波器的滤波器系数的技术包括用自适应滤波器对信号进行滤波，滤波器系数被分组成滤波器块。 在这种情况下，多个滤波器块小于或等于滤波器系数的数量。 在每个更新周期期间，基于网络回波路径脉冲响应更新小于所有滤波器块的滤波器系数。

公开(公告)号：US08666058B2

公开(公告)日：2014-03-04

申请号：US12558201

申请日：2009-09-11

申请人： Hongyang Deng ,  Roman A. Dyba

发明人： Hongyang Deng ,  Roman A. Dyba

IPC分类号： H04M9/08

CPC分类号： H04B3/23

摘要： In one or more embodiments, an echo reduction system can include multiple adaptive filters operable to provide estimated echo replicas based on received signal information coupled to respective multiple adders that can combine a send signal and outputs of the respective adaptive filters and can provide respective output combinations to a filter selector. The filter selector can select from the outputs of the adders and provide a selected output as output for the echo reduction system. In one or more embodiments, the filter selector can control signal processing of the filters by providing control signal to the adaptive filters, where the control signals can indicate to ones of the adaptive filters to pause or continue signal processing. In one or more embodiments, the echo reduction system can include at least one delay unit that can delay receive signal information to at least one of the adaptive filters.

摘要翻译： 在一个或多个实施例中，回波减少系统可以包括多个自适应滤波器，其可操作以基于耦合到相应多个加法器的接收信号信息来提供估计的回波复制，其可以组合发送信号和各个自适应滤波器的输出，并且可以提供相应的输出组合 到过滤器选择器。 滤波器选择器可以从加法器的输出中进行选择，并提供选择的输出作为回波减少系统的输出。 在一个或多个实施例中，滤波器选择器可以通过向自适应滤波器提供控制信号来控制滤波器的信号处理，其中控制信号可以向自适应滤波器中的一个指示暂停或继续信号处理。 在一个或多个实施例中，回波减少系统可以包括至少一个延迟单元，其可以将接收信号信息延迟到至少一个自适应滤波器。

公开(公告)号：US20110064213A1

公开(公告)日：2011-03-17

申请号：US12558201

申请日：2009-09-11

申请人： Hongyang Deng ,  Roman A. Dyba

发明人： Hongyang Deng ,  Roman A. Dyba

IPC分类号： H04M9/08

CPC分类号： H04B3/23

摘要： In one or more embodiments, an echo reduction system can include multiple adaptive filters operable to provide estimated echo replicas based on received signal information coupled to respective multiple adders that can combine a send signal and outputs of the respective adaptive filters and can provide respective output combinations to a filter selector. The filter selector can select from the outputs of the adders and provide a selected output as output for the echo reduction system. In one or more embodiments, the filter selector can control signal processing of the filters by providing control signal to the adaptive filters, where the control signals can indicate to ones of the adaptive filters to pause or continue signal processing. In one or more embodiments, the echo reduction system can include at least one delay unit that can delay receive signal information to at least one of the adaptive filters.

摘要翻译： 在一个或多个实施例中，回波减少系统可以包括多个自适应滤波器，其可操作以基于耦合到相应多个加法器的接收信号信息来提供估计的回波复制，其可以组合发送信号和各个自适应滤波器的输出，并且可以提供相应的输出组合 到过滤器选择器。 滤波器选择器可以从加法器的输出中进行选择，并提供选择的输出作为回波减少系统的输出。 在一个或多个实施例中，滤波器选择器可以通过向自适应滤波器提供控制信号来控制滤波器的信号处理，其中控制信号可以向自适应滤波器中的一个指示暂停或继续信号处理。 在一个或多个实施例中，回波减少系统可以包括至少一个延迟单元，其可以将接收信号信息延迟到至少一个自适应滤波器。

公开(公告)号：US08300802B2

公开(公告)日：2012-10-30

申请号：US11897872

申请日：2007-08-31

申请人： Hongyang Deng ,  Roman A. Dyba ,  Perry P. He

发明人： Hongyang Deng ,  Roman A. Dyba ,  Perry P. He

IPC分类号： H04M9/00

CPC分类号： H04B3/23

摘要： Methods and corresponding systems in an adaptive filter include calculating a signal estimator output using filter coefficients, and calculating an error signal. Next, a coefficient threshold is determined. Thereafter, for each filter coefficient, a first step size is assigned to filter coefficients with a magnitude less than the coefficient threshold, and a second step size is assigned to filter coefficients with a magnitude greater than or equal to the coefficient threshold. Finally, the filter coefficients are updated using the first and second step sizes and the error signal. The coefficient threshold can be selected as the average of the magnitudes of the filter coefficients. Alternatively, the coefficient threshold can be selected as the Mth largest of the filter coefficients ranked in order of magnitude. In one embodiment, the first step size can be less than one and the second step size can be greater than one.

摘要翻译： 自适应滤波器中的方法和相应系统包括使用滤波器系数计算信号估计器输出，并计算误差信号。 接下来，确定系数阈值。 此后，对于每个滤波器系数，分配具有小于系数阈值的幅度的滤波系数的第一步长，并且将第二步长分配给具有大于或等于系数阈值的幅度的滤波系数。 最后，使用第一和第二步长和误差信号来更新滤波器系数。 可以将系数阈值选择为滤波器系数的幅度的平均值。 或者，可以选择系数阈值作为按量级排列的第M个最大的滤波器系数。 在一个实施例中，第一步长可以小于1，而第二步长可以大于1。

公开(公告)号：US08295474B2

公开(公告)日：2012-10-23

申请号：US12188819

申请日：2008-08-08

申请人： Roman A. Dyba ,  Hongyang Deng ,  Brad L. Zwernemann

发明人： Roman A. Dyba ,  Hongyang Deng ,  Brad L. Zwernemann

IPC分类号： H04M9/08 ,  H04M1/00 ,  H04B3/20 ,  H04B1/38

CPC分类号： H04B3/234

摘要： In a data processing system, a method includes receiving samples of a send path input signal (Sin) and samples of a receive path input signal (Rin); in response to receiving each sample of the send path input signal, providing a double-talk indicator to indicate whether or not double-talk has been detected; using the double-talk indicator to determine a double-talk density within a predetermined number of samples of the send path input signal or the receive path input signal; and using the double-talk density to provide a heavy double-talk indicator which indicates whether or not heavy double-talk has been detected. In response to the heavy double-talk indicator indicating that heavy double-talk has been detected, a heavy double-talk mode may be entered.

摘要翻译： 在数据处理系统中，一种方法包括接收发送路径输入信号（Sin）的样本和接收路径输入信号（Rin）的采样; 响应于接收到所述发送路径输入信号的每个采样，提供双方通话指示符以指示是否已经检测到双方通话; 使用双方通话指示符来确定发送路径输入信号或接收路径输入信号的预定数量的采样内的双方通话密度; 并且使用双方通话密度来提供指示是否已经检测到重的双方通话的重型双方通话指示符。 响应于重的双方通话指示器表示已经检测到重的双方通话，可能会输入重的双方通话模式。

公开(公告)号：US20100034373A1

公开(公告)日：2010-02-11

申请号：US12188819

申请日：2008-08-08

申请人： ROMAN A. DYBA ,  Hongyang Deng ,  Brad L. Zwernemann

发明人： ROMAN A. DYBA ,  Hongyang Deng ,  Brad L. Zwernemann

IPC分类号： H04M9/08

CPC分类号： H04B3/234

摘要： In a data processing system, a method includes receiving samples of a send path input signal (Sin) and samples of a receive path input signal (Rin); in response to receiving each sample of the send path input signal, providing a double-talk indicator to indicate whether or not double-talk has been detected; using the double-talk indicator to determine a double-talk density within a predetermined number of samples of the send path input signal or the receive path input signal; and using the double-talk density to provide a heavy double-talk indicator which indicates whether or not heavy double-talk has been detected. In response to the heavy double-talk indicator indicating that heavy double-talk has been detected, a heavy double-talk mode may be entered.

摘要翻译： 在数据处理系统中，一种方法包括接收发送路径输入信号（Sin）的样本和接收路径输入信号（Rin）的采样; 响应于接收到所述发送路径输入信号的每个采样，提供双方通话指示符以指示是否已经检测到双方通话; 使用双方通话指示符来确定发送路径输入信号或接收路径输入信号的预定数量的采样内的双方通话密度; 并且使用双方通话密度来提供指示是否已经检测到重的双方通话的重型双方通话指示符。 响应于重的双方通话指示器表示已经检测到重的双方通话，可能会输入重的双方通话模式。

公开(公告)号：US20090060167A1

公开(公告)日：2009-03-05

申请号：US11897872

申请日：2007-08-31

申请人： Hongyang Deng ,  Roman A. Dyba ,  Perry P. He

发明人： Hongyang Deng ,  Roman A. Dyba ,  Perry P. He

IPC分类号： H04M9/08

CPC分类号： H04B3/23

摘要： Methods and corresponding systems in an adaptive filter include calculating a signal estimator output using filter coefficients, and calculating an error signal. Next, a coefficient threshold is determined. Thereafter, for each filter coefficient, a first step size is assigned to filter coefficients with a magnitude less than the coefficient threshold, and a second step size is assigned to filter coefficients with a magnitude greater than or equal to the coefficient threshold. Finally, the filter coefficients are updated using the first and second step sizes and the error signal. The coefficient threshold can be selected as the average of the magnitudes of the filter coefficients. Alternatively, the coefficient threshold can be selected as the Mth largest of the filter coefficients ranked in order of magnitude. In one embodiment, the first step size can be less than one and the second step size can be greater than one.

摘要翻译： 自适应滤波器中的方法和相应系统包括使用滤波器系数计算信号估计器输出，并计算误差信号。 接下来，确定系数阈值。 此后，对于每个滤波器系数，分配具有小于系数阈值的幅度的滤波系数的第一步长，并且将第二步长分配给具有大于或等于系数阈值的幅度的滤波系数。 最后，使用第一和第二步长和误差信号来更新滤波器系数。 可以将系数阈值选择为滤波器系数的幅度的平均值。 或者，可以选择系数阈值作为按量级排列的第M个最大的滤波器系数。 在一个实施例中，第一步长可以小于1，而第二步长可以大于1。