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    • 1. 发明申请
    • A DOUBLE TALK ACTIVITY DETECTOR AND METHOD FOR AN ECHO CANCELER CIRCUIT
    • 一种用于ECHO CANCERER电路的双通道激活检测器和方法
    • WO2005060583A3
    • 2006-01-05
    • PCT/US2004040807
    • 2004-12-07
    • MOTOROLA INCPIKET JAMES BOWENS KEITH LSPRINGFIELD CHRISTOPHER W
    • PIKET JAMES BOWENS KEITH LSPRINGFIELD CHRISTOPHER W
    • H04M9/08H04M1/00
    • H04M9/082
    • 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).
    • 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向通话条件的可能性。 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),并接收下行链路数据(60),前回波消除器上行数据(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)。
    • 2. 发明申请
    • A DOUBLE TALK ACTIVITY DETECTOR AND METHOD FOR AN ECHO CANCELER CIRCUIT
    • 一种用于ECHO CANCERER电路的双通道激活检测器和方法
    • WO2005060583A2
    • 2005-07-07
    • PCT/US2004/040807
    • 2004-12-07
    • MOTOROLA, INC.PIKET, James, B.OWENS, Keith, L.SPRINGFIELD, Christopher, W.
    • PIKET, James, B.OWENS, Keith, L.SPRINGFIELD, Christopher, W.
    • H04M9/08
    • H04M9/082
    • 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).
    • 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)。