| 摘要 |
PURPOSE:To reduce multi-path noise by providing a circuit receiving a voice signal from a discriminator and outputting prescribed an average continuous wave. CONSTITUTION:A main circuit 50 sections a voice signal S1 into a prescribed section, uses a sampling clock to sample the voice signal at each section to attain an averaged sample through the operation processing of each sample and outputs a continuous wave S2. When a multi-path noise detector 52 detects multi-path noise, a rectangular wave using a noise duration period as a pulse width is outputted. The rectangular wave throws a switch SW to the position (b), the output S2 of the circuit 50, that is, the continuous wave reduced with multi-path noise is fed to a voice amplifier. Thus, the multi-path noise is reduced. |
