发明名称 Method and circuit for detecting multipath interference at FM broadcast reception
摘要 The method involves high-pass filtering an input signal which is affected by multi-path disturbances, so that low-frequency signal portions of the input signal are suppressed. The filtered input signal is amplified, so that a level of the high-frequency signal portions is increased. The amplified and filtered input signal is searched for characteristic pulses which appear at multi-path disturbances. The pulses, if they comprise or exceed a previously determined level, are recorded and are broadened, whereby the signal energy of the pulses is enlarged. Further signals are won from the signal, over respectively at least one time-constant element, for influencing a processing of the radio signal, especially for a dynamic high-cut, stereo-blending, or a volume control, i.e. muting.
申请公布号 EP0881779(A3) 申请公布日期 2003.04.23
申请号 EP19980109281 申请日期 1998.05.22
申请人 GRUNDIG CAR INTERMEDIA SYSTEM GMBH 发明人 BIENEFELD, AXEL;STEGER, KONRAD
分类号 H04B1/10;H04B1/16;(IPC1-7):H04B1/16 主分类号 H04B1/10
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