会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明申请
    • LOW COMPLEXITY ECHO COMPENSATION SYSTEM
    • 低复杂度ECHO补偿系统
    • US20080144848A1
    • 2008-06-19
    • US11955862
    • 2007-12-13
    • Markus BuckTim HaulickMartin RosslerGerhard Uwe SchmidtWalter Schnug
    • Markus BuckTim HaulickMartin RosslerGerhard Uwe SchmidtWalter Schnug
    • H04B3/20
    • H04M9/082
    • An echo reduction system includes a signal analysis filter that converts an input into sub-band signals. A signal down-sampling circuit down-samples the sub-band signals at a first down-sampling rate. An echo analysis filter converts a loudspeaker signal into echo sub-band signal that are further processed by an echo down-sampling circuit. The circuit down-samples the echo sub-band signals at a second down-sampling rate to generate down-sampled echo sub-band signals. An echo compensation filter folds the down-sampled echo sub-band signals with an estimated impulse response of a loudspeaker-room-input system. A second echo down-sampling circuit down-samples the folded down-sampled echo sub-band signals at a third down-sampling rate to generate estimated echo sub-band signals. The first down-sampling rate is equal to the product of the second and third down-sampling rates.
    • 回波减少系统包括将输入转换为子带信号的信号分析滤波器。 信号下采样电路以第一下采样率对子带信号进行下采样。 回波分析滤波器将扬声器信号转换成由回波下采样电路进一步处理的回波子带信号。 电路以第二次下采样率对回波子带信号进行下采样以产生下采样的回波子带信号。 回波补偿滤波器用扬声器室输入系统的估计的脉冲响应折叠下采样的回波子带信号。 第二回波下采样电路以三次下采样率对折叠的下采样回波子带信号进行下采样,以产生估计的回波子带信号。 第一个下采样率等于第二次和第三次下采样率的乘积。
    • 9. 发明授权
    • Low complexity echo compensation system
    • 低复杂度回波补偿系统
    • US08194852B2
    • 2012-06-05
    • US11955862
    • 2007-12-13
    • Markus BuckTim HaulickMartin RösslerGerhard Uwe SchmidtWalter Schnug
    • Markus BuckTim HaulickMartin RösslerGerhard Uwe SchmidtWalter Schnug
    • H04M9/08
    • H04M9/082
    • An echo reduction system includes a signal analysis filter that converts an input into sub-band signals. A signal down-sampling circuit down-samples the sub-band signals at a first down-sampling rate. An echo analysis filter converts a loudspeaker signal into echo sub-band signal that are further processed by an echo down-sampling circuit. The circuit down-samples the echo sub-band signals at a second down-sampling rate to generate down-sampled echo sub-band signals. An echo compensation filter folds the down-sampled echo sub-band signals with an estimated impulse response of a loudspeaker-room-input system. A second echo down-sampling circuit down-samples the folded down-sampled echo sub-band signals at a third down-sampling rate to generate estimated echo sub-band signals. The first down-sampling rate is equal to the product of the second and third down-sampling rates.
    • 回波减少系统包括将输入转换为子带信号的信号分析滤波器。 信号下采样电路以第一下采样率对子带信号进行下采样。 回波分析滤波器将扬声器信号转换成由回波下采样电路进一步处理的回波子带信号。 电路以第二次下采样率对回波子带信号进行下采样以产生下采样的回波子带信号。 回波补偿滤波器用扬声器室输入系统的估计的脉冲响应折叠下采样的回波子带信号。 第二回波下采样电路以三次下采样率对折叠的下采样回波子带信号进行下采样,以产生估计的回波子带信号。 第一个下采样率等于第二次和第三次下采样率的乘积。
    • 10. 发明申请
    • Multi-channel echo compensation system
    • 多通道回波补偿系统
    • US20080031466A1
    • 2008-02-07
    • US11787348
    • 2007-04-16
    • Markus BuckTim HaulickMartin RoesslerGerhard Schmidt
    • Markus BuckTim HaulickMartin RoesslerGerhard Schmidt
    • H04B3/20
    • H04M9/082H04R3/02H04R2499/13
    • The invention is directed to a multi-channel echo compensation system, comprising two loudspeaker input channels, each loudspeaker input channel being connected to a loud-speaker for providing a loudspeaker input signal to be emanated by the loudspeaker, a microphone output channel being connected to at least one microphone for receiving a microphone output signal from the at least one microphone, wherein each microphone is configured to acquire a signal emanating from the loudspeakers, a compensation channel for each loudspeaker input channel, each compensation channel connecting a respective loudspeaker input channel and the microphone output channel, an adaptive compensation filter for each compensation channel, wherein each adaptive compensation filter is configured to filter a signal on the respective compensation channel such that a compensation output signal is provided to compensate a microphone output signal for a signal emanating from the loudspeakers, a pre-processing means for pre-processing loudspeaker input signals on the compensation channels, the pre-processing means being configured to determine a correlation value of the loudspeaker input signals for the two loudspeakers according to a pre-determined criterion and to de-activate one of the adaptive compensation filters if the determined correlation value passes a pre-determined threshold.
    • 本发明涉及一种多通道回波补偿系统,包括两个扬声器输入通道,每个扬声器输入通道连接到扬声器,用于提供由扬声器发出的扬声器输入信号;麦克风输出通道连接到 至少一个麦克风,用于从所述至少一个麦克风接收麦克风输出信号,其中每个麦克风被配置为获取从扬声器发出的信号,每个扬声器输入通道的补偿通道,每个补偿通道连接相应的扬声器输入通道和 麦克风输出通道,用于每个补偿通道的自适应补偿滤波器,其中每个自适应补偿滤波器被配置为对相应补偿通道上的信号进行滤波,使得提供补偿输出信号以补偿麦克风输出信号,以产生从 扬声器,预处理手段 用于在补偿通道上预处理扬声器输入信号,预处理装置被配置为根据预定准则确定两个扬声器的扬声器输入信号的相关值,并且去激活自适应补偿中的一个 如果确定的相关值通过预定阈值,则滤波器。