The invention provides an in-vehicle communication support system for eliminating useless sound and relaying speaking sound. A transfer function of a first variable filter (71) is updated so as to output a cancellation sound (C) in which the level of a signal obtained by subtracting from the output (M) of the first seat microphone (5) the output of an auxiliary filter (75) for generating a correction signal for correcting the position difference between the first seat microphone and the first seat is minimized. In an ICC mode in which the speech sound of a user of a first seat is output from a second seat speaker (4), a selector (6) uses the speech sound (Dp) output from the second seat speaker as the input of a first variable filter (71), and in a non-ICC mode, uses the output sound (A2) of a second seat audio source (2) output from the second seat speaker as the input of the first variable filter. The speech sound (Dp) is generated by removing the component of the cancelling sound (C) from the output (M) of the first seat microphone (5).
本发明提供消除无用音并对讲话声音进行中继的车内交流支援系统。第一可变滤波器(71)的传递函数被更新,以输出使从第一座位麦克风(5)的输出(M)减去用于生成对第一座位麦克风与第一座位的位置之差进行修正的修正信号的辅助滤波器(75)的输出而得到的信号的电平最小的消除音(C)。选择器(6)在从第二座位扬声器(4)输出第一座位的用户的讲话声音的ICC模式时,将从第二座位扬声器输出的讲话声音(Dp)作为第一可变滤波器(71)的输入,在非ICC模式时,将从第二座位扬声器输出的第二座位音频源(2)的输出音(A2)作为第一可变滤波器的输入。讲话声音(Dp)从第一座位麦克风(5)的输出(M)中去除消除音(C)的成分而生成。
In-vehicle communication support system
车内交流支援系统
2022-01-04
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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