公开(公告)号：US07970122B2

公开(公告)日：2011-06-28

申请号：US11589755

申请日：2006-10-31

申请人： Yakov Chen ,  Mark Raifel

发明人： Yakov Chen ,  Mark Raifel

IPC分类号： H04M9/08

CPC分类号： H04M9/082

摘要： Disclosed is a method and circuit for echo suppression or cancellation. According to some embodiments of the present invention, there is provided a circuit including a Noise-Enhanced-Receiving-Direction unit and Narrow-Band Remover unit or units.

摘要翻译： 公开了一种用于回波抑制或消除的方法和电路。 根据本发明的一些实施例，提供了包括噪声增强型接收方向单元和窄带去除单元的电路。

公开(公告)号：US20080294428A1

公开(公告)日：2008-11-27

申请号：US11802646

申请日：2007-05-24

申请人： Mark Raifel ,  Guy Shterlich ,  Yakov Chen

发明人： Mark Raifel ,  Guy Shterlich ,  Yakov Chen

IPC分类号： G10L19/04

CPC分类号： G10L19/005

摘要： A method for using a waveform segment in place of a missing portion of an audio waveform generated in response to a packet stream encoding portions of the audio waveform, the method comprising: phase matching a trailing portion of the waveform segment with a trailing portion of the audio waveform that follows the missing portion; and adding the phase matched waveform segment to the audio waveform.

摘要翻译： 一种用于使用波形段代替响应于音频波形的分组流编码部分产生的音频波形的缺失部分的方法，所述方法包括：将所述波形段的尾部与所述波形段的尾部进行相位匹配 跟随缺失部分的音频波形; 并将相位匹配波形段添加到音频波形。

公开(公告)号：US20140146927A1

公开(公告)日：2014-05-29

申请号：US13697361

申请日：2010-05-13

申请人： Mark Raifel ,  Amos Schreibman ,  Eli Fogel

发明人： Mark Raifel ,  Amos Schreibman ,  Eli Fogel

IPC分类号： H04L25/02

CPC分类号： H04L25/0228 ,  G05B13/024

摘要： A method and adaptive processor for estimating a reference signal, comprising receiving or determining a number of groups and respective group sizes, each group associated with a range of delay values of the reference signal, determining a multiplicity of coefficients, each coefficient associated with a specific delay of the reference signal, determining a multiplicity of weights, each weight associated with one of the groups, multiplying each sample of the reference signal having a delay by a corresponding coefficient to obtain a first product, and summing a multiplicity of first products associated with a group into a group sum signal sample, and multiplying each group sum by a weight associated with the group to obtain a second product, and summing all second products to obtain an estimated signal value.

摘要翻译： 一种用于估计参考信号的方法和自适应处理器，包括接收或确定多个组和相应组大小，每个组与参考信号的延迟值的范围相关联，确定多个系数，每个系数与特定 参考信号的延迟，确定多个权重，与组中的一个相关联的每个权重，将具有延迟的参考信号的每个样本乘以相应的系数以获得第一乘积，并将与多个第一乘积相关联的多个第一乘积相加 将组合成组合信号样本，并且将每个组和乘以与组相关联的权重以获得第二乘积，并且对所有第二乘积求和以获得估计信号值。

公开(公告)号：US20110181452A1

公开(公告)日：2011-07-28

申请号：US12695171

申请日：2010-01-28

申请人： Mark RAIFEL ,  Yaakov Chen

发明人： Mark RAIFEL ,  Yaakov Chen

IPC分类号： H03M1/00

CPC分类号： H04R3/02 ,  H04M1/6041 ,  H04R2400/01 ,  H04R2499/11

摘要： The method and system use a speaker available in an audio end device when not in use as a microphone. The speaker is utilized for enhancing the sound quality received by the person or device at the near end, i.e., the user of the device, or the speaker at the far end, i.e., the speaker with whom the near-end speaker is communicating. Exemplary applications are shown for such utilization, including single or dual microphone near-end automatic listening enhancement, acoustic echo cancellation or suppression with or without double talk detection, and microphone array noise reduction.

摘要翻译： 该方法和系统在不用作麦克风时使用音频终端设备中可用的扬声器。 扬声器用于增强近端的人或设备，即设备的用户或远端的扬声器，即近端扬声器正在通信的扬声器所接收的声音质量。 示出了用于这种利用的示例性应用，包括单麦克风或双麦克风近端自动收听增强，具有或不具有双方通话检测的声学回声消除或抑制以及麦克风阵列降噪。

公开(公告)号：US08121260B2

公开(公告)日：2012-02-21

申请号：US11723837

申请日：2007-03-22

申请人： Mark Raifel ,  Yakov Chen ,  Eli Shoval

发明人： Mark Raifel ,  Yakov Chen ,  Eli Shoval

IPC分类号： H04M1/24 ,  H04M3/08 ,  H04M3/22 ,  H04M9/08

CPC分类号： H04M9/082

摘要： A method of determining if an echo canceller comprised in a communication channel that is used to transmit at least one tonal signal and characterized by a model echo path of the channel, is acceptably adapted to cancel echoes in the channel, the method comprising: determining a performance measure how well the canceller cancels echoes of at least one test signal characterized by at least one frequency different from a frequency of the at least one tonal signal; and determining if the canceller is acceptably adapted responsive to the measure.

摘要翻译： 一种确定包括在通信信道中的用于发送至少一个音调信号并且由信道的模型回波路径表征的回声消除器的方法可接受地适于消除信道中的回波，该方法包括：确定一个 性能测量消除器如何消除至少一个测试信号的回波，其特征在于至少一个与至少一个音调信号的频率不同的频率; 以及响应于所述测量来确定所述消除器是否被可接受地适配。

公开(公告)号：US07856087B2

公开(公告)日：2010-12-21

申请号：US11513298

申请日：2006-08-29

申请人： Mark Raifel ,  Guy Shterlich

发明人： Mark Raifel ,  Guy Shterlich

IPC分类号： H04M1/24

CPC分类号： H04B3/23

摘要： Disclosed is an echo suppresser or cancellation circuit including a speech signal extrapolation unit. The speech extrapolation unit may provide extrapolated signal segment approximations to an echo segment replacement unit. The echo segment replacement unit may replace a segment of a first speech signal suspected of being corrupted with an echo component of a second signal using the extrapolated signal segment approximated to represent the corrupted signal segment.

摘要翻译： 公开了包括语音信号外推单元的回波抑制器或消除电路。 语音外插单元可以向回波段替换单元提供外推信号段近似。 回波段替换单元可以使用近似的外推信号段来代替怀疑被第二信号的回波分量损坏的第一语音信号的段，以表示损坏的信号段。

公开(公告)号：US20070263797A1

公开(公告)日：2007-11-15

申请号：US11410510

申请日：2006-04-25

申请人： Mark Raifel ,  Eli Shoval

发明人： Mark Raifel ,  Eli Shoval

IPC分类号： H04M1/64

CPC分类号： H04M1/82 ,  H04M1/50 ,  H04M1/515

摘要： A method apparatus and system are provided for detecting pulses in a received signal wherein the spacing between the pulses may alternate in an expected manner. Generally, the method exploits intrinsic characteristics in the ensemble pulses, by performing correlation between pulses in a data stream representative of the received signal. Pulses may be related to an ensemble of pulses if their correlation result complies with a predefined criteria and the spacing between the correlated pulses is substantially the expected spacing. The correlation may be performed between two successive pulses, or it may be performed between non-successive pulses. The pulses may be alternating “start” and “stop” pulses of telephonic dial (rotary) pulses, and the expected spacing between the pulses may alternate between two values, “break” period and “make” period. Pulses may be correlated if their energy exceeds a predefined threshold value. The pulses may be interpreted to corresponding dialed digit, and a signal representative of the dialed digit may be forwarded to an IVR-enabled system.

摘要翻译： 提供了一种用于检测接收信号中的脉冲的方法装置和系统，其中脉冲之间的间隔可以以期望的方式交替。 通常，该方法通过执行表示接收信号的数据流中的脉冲之间的相关来利用集合脉冲中的固有特性。 如果脉冲的相关结果符合预定义的标准，并且相关脉冲之间的间距基本上是预期间隔，脉冲可能与脉冲整体相关。 相关性可以在两个连续脉冲之间执行，或者可以在非连续脉冲之间执行。 脉冲可以交替地“开始”和“停止”电话拨号（旋转）脉冲的脉冲，并且脉冲之间的预期间隔可以在两个值之间交替，即“断开”周期和“使”周期。 如果其能量超过预定义的阈值，脉冲可能相关。 脉冲可以被解释为对应的拨号数字，并且表示拨号数字的信号可以被转发到启用IVR的系统。

公开(公告)号：US20130308771A1

公开(公告)日：2013-11-21

申请号：US13982276

申请日：2011-02-03

申请人： Mark Raifel ,  Yaakov Chen ,  Amos Schreibman ,  Eli Fogel

发明人： Mark Raifel ,  Yaakov Chen ,  Amos Schreibman ,  Eli Fogel

IPC分类号： H04M3/00

CPC分类号： H04M3/002 ,  H03H21/0067 ,  H03H2021/0061 ,  H03H2021/0076 ,  H04B3/23

摘要： A method and apparatus for filtering a reference signal by a series of taps having coefficients, comprising dividing the taps into at least one layer of a plurality of groups, each group comprising a plurality of taps, as a first layer, forming a plurality of coefficients arranged in at least one group, as at least one subsequent layer and forwarding multiply-accumulate results of each group in each layer sequentially to the at least one group in the at least one subsequent layer to generate an output signal, and adjusting the coefficients based on an error signal formed as a difference between the output signal and a received input signal related to the reference signal and an interim error signal as a difference between the input signal and a summation of the multiply-accumulate results of at least one layer.

摘要翻译： 一种用于通过具有系数的一系列抽头对参考信号进行过滤的方法和装置，包括将抽头分成至少一组多个组，每个组包括多个抽头，作为第一层，形成多个系数 布置在至少一个组中，作为至少一个后续层，并且将每个层中的每个组的每个组的乘法累积结果顺序地传送到所述至少一个后续层中的所述至少一个组，以生成输出信号，并且基于 在作为输入信号和与参考信号相关的接收输入信号和中间误差信号之间的差异形成的误差信号作为输入信号与至少一层的乘法累积结果的总和之间的差。

公开(公告)号：US20110228946A1

公开(公告)日：2011-09-22

申请号：US12728285

申请日：2010-03-22

申请人： Yaakov CHEN ,  Mark Raifel

发明人： Yaakov CHEN ,  Mark Raifel

IPC分类号： H03G3/00

CPC分类号： G10L19/012

摘要： A method for Comfort Noise Generation (CNG) comprising the steps of recording information of Background Noise (BGN); generating white noise samples; and generating Comfort Noise (CN) by applying coefficients that are extracted from said information of BGN on White Noise (WN) samples.

摘要翻译： 一种用于舒适噪声产生（CNG）的方法，包括记录背景噪声（BGN）信息的步骤; 产生白噪声样本; 并通过应用从白噪声（WN）样本的BGN信息中提取的系数来产生舒适噪声（CN）。

公开(公告)号：US20100260273A1

公开(公告)日：2010-10-14

申请号：US12386057

申请日：2009-04-13

申请人： Mark Raifel ,  Yaakov Chen ,  Eli Fogel

发明人： Mark Raifel ,  Yaakov Chen ,  Eli Fogel

IPC分类号： H04B14/04 ,  G10L15/00

CPC分类号： G10L19/012

摘要： A method of maintaining signal convergence of a transmitter and a receiver of an adaptive differential pulse code modulated (ADPCM) communication system during discontinuous transmission, by generating synchronized comfort noise frame in the transmitter and in the receiver during quiet periods and mutually updating the receiver's decoder and encoder on their states.

摘要翻译： 一种在不连续传输期间通过在静音期间通过在发射机和接收机中产生同步的舒适噪声帧来维持在自适应差分脉冲编码调制（ADPCM）通信系统中的发射机和接收机的信号收敛的方法，并且在接收机的解码器 和编码器在他们的状态。