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1. 发明申请

WO2007001787A3 A REDUCED COMPLEXITY RECURSIVE LEAST SQUARE LATTICE STRUCTURE ADAPTIVE FILTER BY MEANS OF APPROXIMATING THE FORWARD ERROR PREDICTION SQUARES USING THE BACKWARD ERROR PREDICTION SQUARES 审中-公开
标题翻译：通过使用后向误差预测误差来估计前向误差预测误差的方法，减少复杂度的最小二乘法结构自适应滤波器
公开(公告)号：WO2007001787A3
公开(公告)日：2007-07-12
申请号：PCT/US2006022289
申请日：2006-06-08
申请人： MOTOROLA INC , BARRON DAVID L , PIKET JAMES B , SPRINGFIELD CHRISTOPHER W
发明人： BARRON DAVID L , PIKET JAMES B , SPRINGFIELD CHRISTOPHER W
IPC分类号： G06F17/10
CPC分类号： H03H21/0014 , H03H2021/0049
摘要： A method for reducing a computational complexity of an m-stage adaptive filter is provided by determining a weighted sum of backward prediction error squares for stage m at time n, determining a conversion factor for stage m at time n, inverting the weighted sum of backward prediction error squares, and approximating a weighted sum of forward prediction error squares by combining the inverted weighted sum of backward prediction error squares with the conversion factor.
摘要翻译：通过确定在时间n的阶段m的后向预测误差平方的加权和，确定在时间n的阶段m的转换因子，将倒数的加权和反转，从而提供一种降低m级自适应滤波器的计算复杂度的方法预测误差平方，并通过将后向预测误差平方的反相加权和与转换因子组合来近似正向预测误差平方的加权和。

2. 发明申请

WO2005060583A2 A DOUBLE TALK ACTIVITY DETECTOR AND METHOD FOR AN ECHO CANCELER CIRCUIT 审中-公开
标题翻译：一种用于ECHO CANCERER电路的双通道激活检测器和方法
公开(公告)号：WO2005060583A2
公开(公告)日：2005-07-07
申请号：PCT/US2004/040807
申请日：2004-12-07
申请人： MOTOROLA, INC. , PIKET, James, B. , OWENS, Keith, L. , SPRINGFIELD, Christopher, W.
发明人： PIKET, James, B. , OWENS, Keith, L. , SPRINGFIELD, Christopher, W.
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： A double talk activity detector (30) and method for an echo canceler circuit (10) improves the probability of detecting a double talk condition based on at least pre-echo canceler uplink data (40). The echo canceler circuit (10) includes a double talk activity probability data generator (30) and an echo canceler stage (20). The double talk activity probability data generator (30) receives pre-echo canceler uplink data (40) and in response produces double talk activity probability data (50). The echo canceler stage (20) is coupled to the double talk activity probability data generator (30) and receives downlink data (60), pre-echo canceler uplink data (40) and the double talk activity probability data (50) and in response produces attenuated uplink data (70).
摘要翻译：基于至少前回波消除器上行链路数据（40）的双向通话活动检测器（30）和用于回波消除器电路（10）的方法提高了检测双方通话条件的可能性。回波消除器电路（10）包括双通话活动概率数据发生器（30）和回波消除器级（20）。双向对话活动概率数据生成器（30）接收前回波消除器上行链路数据（40），并且作为响应产生双方通话活动概率数据（50）。回波消除器级（20）耦合到双向通话活动概率数据生成器（30），并接收下行数据（60），预回波消除器上行链路数据（40）和双方通话活动概率数据（50）产生衰减的上行链路数据（70）。

3. 发明申请

WO2007001786A3 A REDUCED COMPLEXITY RECURSIVE LEAST SQUARE LATTICE STRUCTURE ADAPTIVE FILTER BY MEANS OF LIMITED RECURSION OF THE BACKWARD AND FORWARD ERROR PREDICTION SQUARES 审中-公开
标题翻译：通过有限后退和前向误差预测方法减少复杂递进最小二乘格子结构自适应滤波器
公开(公告)号：WO2007001786A3
公开(公告)日：2009-04-16
申请号：PCT/US2006022286
申请日：2006-06-08
申请人： MOTOROLA INC , BARRON DAVID L , IWAI KYLE K , PIKET JAMES B
发明人： BARRON DAVID L , IWAI KYLE K , PIKET JAMES B
IPC分类号： G06F17/20
CPC分类号： H03H21/0014 , H03H2021/0049
摘要： A method for reducing a computational complexity of an m-stage adaptive filter is provided by updating recursively forward and backward error prediction square terms for a first portion of a length of the adaptive filter, and keeping the updated forward and backward error prediction square terms constant for a second portion of the length of the adaptive filter.
摘要翻译：通过更新自适应滤波器长度的第一部分的递归正向和反向误差预测平方项，并且保持更新的正向和反向误差预测平方项恒定，来提供用于降低m阶自适应滤波器的计算复杂度的方法用于自适应滤波器长度的第二部分。

4. 发明申请

WO2005060582A2 A DOWNLINK ACTIVITY AND DOUBLE TALK PROBABILITY DETECTOR AND METHOD FOR AN ECHO CANCELER CIRCUIT 审中-公开
标题翻译： ECHO取消电路的DOWNLINK活动和双TURK概率检测器和方法
公开(公告)号：WO2005060582A2
公开(公告)日：2005-07-07
申请号：PCT/US2004/040806
申请日：2004-12-07
申请人： MOTOROLA, INC. , PIKET, James, B. , IWAI, Kyle, K. , ROKUSEK, Daniel, S.
发明人： PIKET, James, B. , IWAI, Kyle, K. , ROKUSEK, Daniel, S.
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： A downlink activity and double talk probability detector and method for an echo canceler circuit (10) improves the stability of an echo canceler adaptive filter (300) and improves the attenuation of post-echo canceler uplink data (388). The echo canceler circuit (10) includes a downlink activity and double talk probability data generator (30) and an echo canceler stage (20). The downlink activity and double talk probability data generator (30) receives pre-echo canceler uplink data (40) and downlink data (50) and in response produces double talk probability data (60) and downlink activity data (70). The echo canceler stage (20) receives the downlink data (50), the pre-echo canceler uplink data (40), the double talk probability data (60) and the downlink activity data (70), and in response produces uplink data (80).
摘要翻译：一种用于回波消除器电路（10）的下行链路活动和双通话概率检测器和方法提高了回波消除器自适应滤波器（300）的稳定性，并且改善了回波后消除器上行链路数据（388）的衰减。回波消除器电路（10）包括下行链路活动和双向通话概率数据发生器（30）和回波消除器级（20）。下行链路活动和双向通话概率数据生成器（30）接收前回波消除器上行链路数据（40）和下行链路数据（50），并且作为响应产生双通话概率数据（60）和下行链路活动数据（70）。回波消除器级（20）接收下行链路数据（50），前回波消除器上行链路数据（40），双方通话概率数据（60）和下行链路活动数据（70），并且作为响应产生上行链路数据 80）。

5. 发明申请

WO2007062287A8 METHOD AND APPARATUS FOR DOUBLE-TALK DETECTION IN A HANDS-FREE COMMUNICATION SYSTEM 审中-公开
标题翻译：用于在免提通信系统中进行双语检测的方法和设备
公开(公告)号：WO2007062287A8
公开(公告)日：2008-08-21
申请号：PCT/US2006060656
申请日：2006-11-08
申请人： MOTOROLA INC , CRUZ-ZENO EDGARDO M , PIKET JAMES B , RAMABADRAN TENKASI V
发明人： CRUZ-ZENO EDGARDO M , PIKET JAMES B , RAMABADRAN TENKASI V
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： An echo canceling circuit comprising a double talk detector, an upper band signal filter configured to pass only near-end upper band signals to the double talk detector and remove lower band signals, an adaptive filter circuit, a control circuit operatively coupled to the double talk detector and to the adaptive filter circuit, and a threshold estimator configured to iteratively calculate an upper adaptive decision threshold value and a lower adaptive decision threshold value. The double talk detector declares near-end speech to be present if an estimated power level of the upper band signals exceeds the upper adaptive decision threshold value, and declares the near-end speech to be absent if the estimated power level of the upper band signals falls below the lower adaptive decision threshold value for a predetermined number of iterative cycles.
摘要翻译：一种回声消除电路，包括双方讲话检测器，被配置为仅将近端高频带信号传递到双方讲话检测器并移除较低频带信号的高频带信号滤波器，自适应滤波器电路，操作性地耦合到双方讲话的控制电路检测器和自适应滤波器电路，以及阈值估计器，被配置为迭代地计算上自适应判决阈值和下自适应判决阈值。如果所述较高频带信号的估计功率电平超过所述较高自适应判决阈值，则所述双重通话检测器宣告近端语音存在，并且如果所述较高频带信号的所估计功率电平宣告所述近端语音不存在，低于较低的自适应判定阈值达预定数量的迭代周期。

6. 发明申请

WO2007062287A3 METHOD AND APPARATUS FOR DOUBLE-TALK DETECTION IN A HANDS-FREE COMMUNICATION SYSTEM 审中-公开
公开(公告)号：WO2007062287A3
公开(公告)日：2007-05-31
申请号：PCT/US2006/060656
申请日：2006-11-08
申请人： MOTOROLA INC. , CRUZ-ZENO, Edgardo, M. , PIKET, James, B. , RAMABADRAN, Tenkasi, V.
发明人： CRUZ-ZENO, Edgardo, M. , PIKET, James, B. , RAMABADRAN, Tenkasi, V.
IPC分类号： H04M9/08
摘要： An echo canceling circuit comprising a double talk detector, an upper band signal filter configured to pass only near-end upper band signals to the double talk detector and remove lower band signals, an adaptive filter circuit, a control circuit operatively coupled to the double talk detector and to the adaptive filter circuit, and a threshold estimator configured to iteratively calculate an upper adaptive decision threshold value and a lower adaptive decision threshold value. The double talk detector declares near-end speech to be present if an estimated power level of the upper band signals exceeds the upper adaptive decision threshold value, and declares the near-end speech to be absent if the estimated power level of the upper band signals falls below the lower adaptive decision threshold value for a predetermined number of iterative cycles.

7. 发明申请

WO2007008312A3 MOBILE DEVICE ENHANCEMENT VIA A VEHICULAR TELEMATICS SYSTEM 审中-公开
公开(公告)号：WO2007008312A3
公开(公告)日：2007-01-18
申请号：PCT/US2006/021968
申请日：2006-06-06
申请人： MOTOROLA, INC. , ROKUSEK, Daniel, S. , KAMBHAMPATI, Kranti, K. , PIKET, James, B. , SRENGER, Edward
发明人： ROKUSEK, Daniel, S. , KAMBHAMPATI, Kranti, K. , PIKET, James, B. , SRENGER, Edward
IPC分类号： H04Q7/20
摘要： An apparatus and method for enhancing a handheld communication device via a telematics system in a vehicle is disclosed. Audio received at the handheld device is transferred to the telematics system in the vehicle. The received audio is then analyzed to determine whether it contains speech, and if so, an audio present signal is generated and the received audio is recorded into a memory coupled to the telematics system. The user can then engage the user interface of the telematics system to replay the recorded audio. Bluetooth protocol is preferably used to establish a channel between the handheld device and the telematics system, which can occur automatically when the two are in proximity. Analysis of the received audio preferably comprises use of a voice detector as part of a speech recognition system otherwise used by the telematics system to assess spoken commands.

8. 发明申请

WO2007008312A2 MOBILE DEVICE ENHANCEMENT VIA A VEHICULAR TELEMATICS SYSTEM 审中-公开
标题翻译：移动设备通过车辆电话系统增强
公开(公告)号：WO2007008312A2
公开(公告)日：2007-01-18
申请号：PCT/US2006021968
申请日：2006-06-06
申请人： MOTOROLA INC , ROKUSEK DANIEL S , KAMBHAMPATI KRANTI K , PIKET JAMES B , SRENGER EDWARD
发明人： ROKUSEK DANIEL S , KAMBHAMPATI KRANTI K , PIKET JAMES B , SRENGER EDWARD
IPC分类号： H04W88/02
CPC分类号： H04W88/02
摘要： An apparatus and method for enhancing a handheld communication device via a telematics system in a vehicle is disclosed. Audio received at the handheld device is transferred to the telematics system in the vehicle. The received audio is then analyzed to determine whether it contains speech, and if so, an audio present signal is generated and the received audio is recorded into a memory coupled to the telematics system. The user can then engage the user interface of the telematics system to replay the recorded audio. Bluetooth protocol is preferably used to establish a channel between the handheld device and the telematics system, which can occur automatically when the two are in proximity. Analysis of the received audio preferably comprises use of a voice detector as part of a speech recognition system otherwise used by the telematics system to assess spoken commands. The memory is preferably overwritten with the latest audio sent from the handheld device to the telematics system, such that engaging the telematics system for playback of the recorded audio will repeat only the last audio sent.
摘要翻译：公开了一种用于通过车辆中的远程信息处理系统增强手持通信设备的装置和方法。在手持设备处接收的音频被传送到车辆中的远程信息处理系统。然后分析接收到的音频以确定其是否包含语音，如果是，则产生音频呈现信号，并将接收的音频记录到耦合到远程信息处理系统的存储器中。然后，用户可以接合远程信息处理系统的用户界面来重放记录的音频。蓝牙协议优选地用于在手持设备和远程信息处理系统之间建立信道，当两者处于邻近状态时，该协议可以自动发生。对所接收的音频的分析优选地包括使用语音检测器作为语音识别系统的一部分，否则由远程信息处理系统用于评估语音命令。存储器优选地被从手持设备发送到远程信息处理系统的最新音频被覆盖，使得接合远程信息处理系统用于重放所记录的音频将仅重复发送的最后音频。

9. 发明申请

WO2007001787A2 A REDUCED COMPLEXITY RECURSIVE LEAST SQUARE LATTICE STRUCTURE ADAPTIVE FILTER BY MEANS OF APPROXIMATING THE FORWARD ERROR PREDICTION SQUARES USING THE BACKWARD ERROR PREDICTION SQUARES 审中-公开
标题翻译：利用后向误差预测平方逼近前向误差预测方差减少复杂递进最小二乘格型结构自适应滤波
公开(公告)号：WO2007001787A2
公开(公告)日：2007-01-04
申请号：PCT/US2006/022289
申请日：2006-06-08
申请人： MOTOROLA, INC. , BARRON, David L., , PIKET, James B., , SPRINGFIELD, Christopher W.,
发明人： BARRON, David L., , PIKET, James B., , SPRINGFIELD, Christopher W.,
IPC分类号： G06F17/10
CPC分类号： H03H21/0014 , H03H2021/0049
摘要： A method for reducing a computational complexity of an m-stage adaptive filter is provided by determining a weighted sum of backward prediction error squares for stage m at time n, determining a conversion factor for stage m at time n, inverting the weighted sum of backward prediction error squares, and approximating a weighted sum of forward prediction error squares by combining the inverted weighted sum of backward prediction error squares with the conversion factor.
摘要翻译：通过确定时刻n的阶段m的后向预测误差平方的加权和，确定阶段m的时刻的转换因子，从而提供用于降低m阶自适应滤波器的计算复杂度的方法 n，反向后向预测误差平方的加权和，并且通过将反向预测误差平方的反向加权和与转换因子组合，来近似前向预测误差平方的加权和。

10. 发明申请

WO2005060582A3 A DOWNLINK ACTIVITY AND DOUBLE TALK PROBABILITY DETECTOR AND METHOD FOR AN ECHO CANCELER CIRCUIT 审中-公开
标题翻译：回声消除电路的下行活动和双重说话概率检测器和方法
公开(公告)号：WO2005060582A3
公开(公告)日：2005-12-01
申请号：PCT/US2004040806
申请日：2004-12-07
申请人： MOTOROLA INC , PIKET JAMES B , IWAI KYLE K , ROKUSEK DANIEL S
发明人： PIKET JAMES B , IWAI KYLE K , ROKUSEK DANIEL S
IPC分类号： H04M9/08 , H04M1/00
CPC分类号： H04M9/082
摘要： A downlink activity and double talk probability detector and method for an echo canceler circuit (10) improves the stability of an echo canceler adaptive filter (300) and improves the attenuation of post-echo canceler uplink data (388). The echo canceler circuit (10) includes a downlink activity and double talk probability data generator (30) and an echo canceler stage (20). The downlink activity and double talk probability data generator (30) receives pre-echo canceler uplink data (40) and downlink data (50) and in response produces double talk probability data (60) and downlink activity data (70). The echo canceler stage (20) receives the downlink data (50), the pre-echo canceler uplink data (40), the double talk probability data (60) and the downlink activity data (70), and in response produces uplink data (80).
摘要翻译：用于回波消除器电路（10）的下行链路活动和双重通话概率检测器和方法改进了回波消除器自适应滤波器（300）的稳定性并且改善了后回波消除器上行链路数据（388）的衰减。回声消除器电路（10）包括下行链路活动和双向通话概率数据发生器（30）和回声消除器级（20）。下行链路活动和双向通话概率数据发生器（30）接收预回波消除器上行链路数据（40）和下行链路数据（50），并作为响应产生双向通话概率数据（60）和下行链路活动数据（70）。回波消除器级（20）接收下行数据（50），前回波消除器上行数据（40），双通话概率数据（60）和下行活动数据（70），并作为响应产生上行数据 80）。

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