公开(公告)号：US06873956B2

公开(公告)日：2005-03-29

申请号：US10464307

申请日：2003-06-17

申请人： Carlo Murgia ,  Jeffrey D. Klein ,  Huan-Yu Su

发明人： Carlo Murgia ,  Jeffrey D. Klein ,  Huan-Yu Su

IPC分类号： G01L21/04 ,  G10L19/00 ,  G10L19/14 ,  G10L21/04 ,  H04L12/56

CPC分类号： G10L19/008

摘要： An exemplary multi-channel speech processor comprises a controller capable of interfacing with a plurality of channels, and at least one signal processing unit (SPU) coupled to the controller, where the multi-channel speech processor has a maximum execution time for processing all frames, one channel at a time, by processing a single frame from each of the plurality of channels. The signal processing unit encodes each of the single frames from each of the plurality of channels, one channel at a time, to generate encoded frames until the maximum execution time elapses or is about to elapse. The controller also transmits a pre-determined frame for each of the plurality of channels not processed during the encoding step, due to the maximum execution time elapsing or being about to elapse, such that the predetermined frame causes a decoder which receives the predetermined frame to generate a frame erase frame.

摘要翻译： 示例性多声道语音处理器包括能够与多个通道接口的控制器以及耦合到控制器的至少一个信号处理单元（SPU），其中多声道语音处理器具有用于处理所有帧的最大执行时间 通过处理来自多个信道中的每一个的单个帧，一次一个信道。 信号处理单元从多个信道中的每一个，每次一个信道中对每个单个帧进行编码，以生成经编码的帧，直到经过或将要经过最大执行时间。 由于最大执行时间经过或将要经过，控制器还为编码步骤期间未被处理的多个通道中的每一个发送预定帧，使得预定帧使接收预定帧的解码器 生成帧擦除帧。

公开(公告)号：US07076421B2

公开(公告)日：2006-07-11

申请号：US11077809

申请日：2005-03-09

申请人： Carlo Murgia ,  Jeffrey D. Klein ,  Huan-Yu Su

发明人： Carlo Murgia ,  Jeffrey D. Klein ,  Huan-Yu Su

IPC分类号： G10L21/02

CPC分类号： G10L19/008

摘要： An exemplary multi-channel speech processor comprises a controller capable of interfacing with a plurality of channels, and at least one signal processing unit (SPU) coupled to the controller, where the multi-channel speech processor has a maximum execution time for processing all frames, one channel at a time, by processing a single frame from each of the plurality of channels. The signal processing unit encodes each of the single frames from each of the plurality of channels, one channel at a time, to generate encoded frames until the maximum execution time elapses or is about to elapse. The controller also transmits a predetermined frame for each of the plurality of channels not processed during the encoding step, due to the maximum execution time elapsing or being about to elapse, such that the predetermined frame causes a decoder which receives the predetermined frame to generate a frame erase frame.

摘要翻译： 示例性多声道语音处理器包括能够与多个通道接口的控制器以及耦合到控制器的至少一个信号处理单元（SPU），其中多声道语音处理器具有用于处理所有帧的最大执行时间 通过处理来自多个信道中的每一个的单个帧，一次一个信道。 信号处理单元从多个信道中的每一个，每次一个信道中对每个单个帧进行编码，以生成经编码的帧，直到经过或将要经过最大执行时间。 由于最大的执行时间经过或将要经过，所以控制器还为编码步骤期间未被处理的多个通道中的每一个发送预定的帧，使得预定帧使得接收预定帧的解码器产生 帧擦除帧。

公开(公告)号：US07787597B1

公开(公告)日：2010-08-31

申请号：US11318373

申请日：2005-12-22

申请人： Eyal Shlomot ,  Jeffrey D. Klein ,  Carlo Murgia ,  Adil Benyassine

发明人： Eyal Shlomot ,  Jeffrey D. Klein ,  Carlo Murgia ,  Adil Benyassine

IPC分类号： H04M1/24

CPC分类号： H04M9/082

摘要： There are provided methods and systems for automated testing of echo cancellers using natural speech excitations and evaluating an echo canceller by transmitting a first signal to the echo canceller, wherein the first signal includes a first speech signal and a first marker signal, and wherein the first marker signal is transmitted a first period of time after the first speech signal is transmitted; receiving a second signal from the echo canceller, wherein the second signal includes a second speech signal and a second marker signal; aligning the first speech signal and the second speech signal using the first marker signal and the second marker signal; determining a choppiness of the second speech signal, when a non-linear processor of the echo canceller is on; and determining an audible echo, when a non-linear processor of the echo canceller is off.

摘要翻译： 提供了使用自然语音激励自动测试回波消除器的方法和系统，并且通过向回声消除器发送第一信号来评估回波消除器，其中第一信号包括第一语音信号和第一标记信号，并且其中第一 在发送第一语音信号之后的第一时间段发送标记信号; 从所述回声消除器接收第二信号，其中所述第二信号包括第二语音信号和第二标记信号; 使用第一标记信号和第二标记信号对第一语音信号和第二语音信号; 当所述回波消除器的非线性处理器处于接通状态时，确定所述第二语音信号的复杂度; 并且当回波消除器的非线性处理器关闭时，确定可听回音。

公开(公告)号：US07711107B1

公开(公告)日：2010-05-04

申请号：US11129450

申请日：2005-05-12

申请人： Carlo Murgia ,  Jeffrey D. Klein ,  Adil Benyassine ,  Eyal Shlomot ,  Yang Gao

发明人： Carlo Murgia ,  Jeffrey D. Klein ,  Adil Benyassine ,  Eyal Shlomot ,  Yang Gao

IPC分类号： H04M9/08

CPC分类号： H04B3/234

摘要： A method of masking a residual echo signal by an echo canceller is provided. The method comprises receiving a far-end signal, adjusting filter coefficients of an adaptive filter in response to the far-end signal, generating an echo model signal based on the far-end signal using the adaptive filter, receiving a near-end signal, subtracting the echo model signal from the near-end signal to generate an output signal, defining a spectral mask based on the near-end signal, wherein the spectral mask is indicative of near-end spectral peaks and near-end spectral valleys, de-emphasizing the output signal in spectral regions of the near-end spectral peaks, and emphasizing the output signal in spectral regions of the near-end spectral valleys, wherein the de-emphasizing occurs during filter coefficients determination for the adaptive filter. A weighted filter may perform the de-emphasizing and the emphasizing operations, where the weighted filter uses medium term spectral characteristics of the near-end signal.

摘要翻译： 提供了一种通过回波消除器掩蔽残留回波信号的方法。 该方法包括接收远端信号，响应于远端信号调整自适应滤波器的滤波器系数，使用自适应滤波器基于远端信号生成回波模型信号，接收近端信号， 从近端信号减去回波模型信号以产生输出信号，基于近端信号定义频谱屏蔽，其中频谱掩模表示近端谱峰和近端谱谷， 强调近端光谱峰值的光谱区域中的输出信号，并且强调近端光谱谷的光谱区域中的输出信号，其中在自适应滤波器的滤波器系数确定期间发生去加重。 加权滤波器可以执行去强调和强调操作，其中加权滤波器使用近端信号的中期频谱特性。

公开(公告)号：US06347141B1

公开(公告)日：2002-02-12

申请号：US09128362

申请日：1998-08-03

申请人： Jeffrey D. Klein ,  David O. Anderton

发明人： Jeffrey D. Klein ,  David O. Anderton

IPC分类号： H04M908

CPC分类号： H04B3/23

摘要： An echo canceller has an adaptive filter with an input coupled to a digitized audio input producing samples at a first rate. The adaptive filter also produces an estimated digitized audio feedback signal at the first rate based upon a set of tap values. A controller is coupled to the adaptive filter and determines the values of the set of tap values. A shared processor is coupled to the adaptive filter and the controller. The shared processor services tasks of the adaptive filter and the controller as well as other devices. When the adaptive filter has converged upon an unknown echo channel response, the controller determines the set of tap values at a rate lower than the first rate.

摘要翻译： 回声消除器具有自适应滤波器，其输入耦合到数字化音频输入，以第一速率产生样本。 自适应滤波器还基于一组抽头值以第一速率产生估计的数字化音频反馈信号。 控制器耦合到自适应滤波器并确定抽头值集合的值。 共享处理器耦合到自适应滤波器和控制器。 自适应滤波器和控制器以及其他设备的共享处理器服务任务。 当自适应滤波器收敛于未知的回波信道响应时，控制器以低于第一速率的速率确定抽头值集合。

公开(公告)号：US20090138185A1

公开(公告)日：2009-05-28

申请号：US11986816

申请日：2007-11-27

申请人： Jeffrey D. Klein ,  Richard Thompson ,  Timothy Davis ,  Clayton Walenta ,  Michael S. Thornton

发明人： Jeffrey D. Klein ,  Richard Thompson ,  Timothy Davis ,  Clayton Walenta ,  Michael S. Thornton

IPC分类号： F01N11/00

CPC分类号： F02D41/22 ,  F01N11/00 ,  F01N2260/24 ,  F01N2550/04 ,  F01N2550/24 ,  F02D41/0235 ,  F02D41/2451 ,  Y02T10/47

摘要： A method of detecting an assembly condition, such as, for example, a misassembly, of an exhaust aftertreatment system of a machine includes a step of executing an aftertreatment assembly diagnostic algorithm. The executing step includes detecting an electronic identification feature of an aftertreatment component of the exhaust aftertreatment system, and comparing the electronic identification feature to an expected value.

摘要翻译： 一种检测机器的排气后处理系统的装配状态（例如错误组装）的方法包括执行后处理组件诊断算法的步骤。 执行步骤包括检测排气后处理系统的后处理部件的电子识别特征，并将电子识别特征与预期值进行比较。

公开(公告)号：US07693648B2

公开(公告)日：2010-04-06

申请号：US11986816

申请日：2007-11-27

申请人： Jeffrey D. Klein ,  Richard Thompson ,  Timothy Davis ,  Clayton Walenta ,  Michael S. Thornton

发明人： Jeffrey D. Klein ,  Richard Thompson ,  Timothy Davis ,  Clayton Walenta ,  Michael S. Thornton

IPC分类号： G06F19/00 ,  F01N3/02

CPC分类号： F02D41/22 ,  F01N11/00 ,  F01N2260/24 ,  F01N2550/04 ,  F01N2550/24 ,  F02D41/0235 ,  F02D41/2451 ,  Y02T10/47

摘要： A method of detecting an assembly condition, such as, for example, a misassembly, of an exhaust aftertreatment system of a machine includes a step of executing an aftertreatment assembly diagnostic algorithm. The executing step includes detecting an electronic identification feature of an aftertreatment component of the exhaust aftertreatment system, and comparing the electronic identification feature to an expected value.

摘要翻译： 一种检测机器的排气后处理系统的装配状态（例如错误组装）的方法包括执行后处理组件诊断算法的步骤。 执行步骤包括检测排气后处理系统的后处理部件的电子识别特征，并将电子识别特征与预期值进行比较。

公开(公告)号：US06731747B2

公开(公告)日：2004-05-04

申请号：US09792816

申请日：2001-02-23

申请人： Norman J. Beamish ,  Jeffrey D. Klein

发明人： Norman J. Beamish ,  Jeffrey D. Klein

IPC分类号： H04M100

CPC分类号： H04B3/23

摘要： A system is disclosed for accurately detecting an alert signal. Improving detector accuracy decreases missed detects and false detects. In one example embodiment the detector monitors received telephone signals for an alert signal such as a CPE alert signal. In such a configuration, the invention processes the received signal prior to monitoring by the detector to remove or reduce unwanted echo, interference and/or other signal portions that may otherwise inhibit accurate detection of alert signals sent from a remote location. In one configuration, the invention performs echo suppression or cancellation on the received signal to eliminate or reduce echo, such as may be introduced by a hybrid.

摘要翻译： 公开了一种用于准确地检测报警信号的系统。 提高检测器精度可以减少检测误差和错误检测。 在一个示例实施例中，检测器监视接收的电话信号以获得诸如CPE警报信号的警报信号。 在这种配置中，本发明在由检测器进行监视之前处理接收到的信号，以去除或减少不必要的回波，干扰和/或其他信号部分，否则这些信号部分可能会禁止从远程位置发送的警报信号的精确检测。 在一种配置中，本发明对接收到的信号执行回波抑制或消除以消除或减少回波，例如可以由混合器引入。