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公开(公告)号：EP0461801A3
公开(公告)日：1992-11-25
申请号：EP91305066.2
申请日：1991-06-05
CPC分类号： H04R3/005 , G10K11/178 , G10K2210/1053 , G10K2210/108 , G10K2210/1282 , G10K2210/3041 , G10K2210/3045 , G10K2210/3225 , G10K2210/503
摘要： A noise suppressor is disclosed in which a noise signal is detected by a first detector, then processed by an adaptive filter, and an output signal from the adaptive filter and an audio signal from audio equipment are added by an adder and reproduced by a speaker. The sound signal thus reproduced by the speaker and the noise signal are detected by a second detector located at a listening point and sent to a filter control circuit. The filter control circuit processes the signal sent from the second detector and the audio signal from the audio equipment having a transfer function from the adder to the filter control circuit convoluted thereby to remove the audio signal component therefrom. The adaptive filter adaptively controls the noise signal in response to the output signal from the filter control circuit.
摘要翻译： 公开了一种噪声抑制器，其中由第一检测器检测噪声信号，然后由自适应滤波器处理，并且来自自适应滤波器的输出信号和来自音频设备的音频信号由加法器相加并由扬声器再现。 由扬声器再现的声音信号和噪声信号由位于收听点处的第二检测器检测并发送到滤波器控制电路。 滤波器控制电路将来自第二检测器的信号和来自具有传递函数的音频设备的音频信号从加法器处理到由此卷积的滤波器控制电路，从而从其去除音频信号分量。 自适应滤波器响应于来自滤波器控制电路的输出信号自适应地控制噪声信号。
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2.发明公开
公开(公告)号：EP0461801A2
公开(公告)日：1991-12-18
申请号：EP91305066.2
申请日：1991-06-05
CPC分类号： H04R3/005 , G10K11/178 , G10K2210/1053 , G10K2210/108 , G10K2210/1282 , G10K2210/3041 , G10K2210/3045 , G10K2210/3225 , G10K2210/503
摘要： A noise suppressor is disclosed in which a noise signal is detected by a first detector, then processed by an adaptive filter, and an output signal from the adaptive filter and an audio signal from audio equipment are added by an adder and reproduced by a speaker. The sound signal thus reproduced by the speaker and the noise signal are detected by a second detector located at a listening point and sent to a filter control circuit. The filter control circuit processes the signal sent from the second detector and the audio signal from the audio equipment having a transfer function from the adder to the filter control circuit convoluted thereby to remove the audio signal component therefrom. The adaptive filter adaptively controls the noise signal in response to the output signal from the filter control circuit.
摘要翻译： 公开了一种噪声抑制器，其中由第一检测器检测噪声信号，然后由自适应滤波器处理，并且来自自适应滤波器的输出信号和来自音频设备的音频信号由加法器相加并由扬声器再现。 由扬声器再现的声音信号和噪声信号由位于收听点处的第二检测器检测并发送到滤波器控制电路。 滤波器控制电路将从第二检测器发送的信号和来自具有传递函数的音频设备的音频信号从加法器处理到由此卷积的滤波器控制电路，以从中去除音频信号分量。 自适应滤波器响应于来自滤波器控制电路的输出信号自适应地控制噪声信号。
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