| 摘要 |
A system for eliminating a noise from a stereo signal is disclosed comprising first and second signal paths to which an input stereo signal is applied simultaneously, storage means provided in the first signal path for storing an audio signal component, a pilot tone signal component and a sub-signal component of the stereo signal, the output of the storage means being grounded through a switch that is on when no noise exists, said switch being turned off when a noise exists in the stereo signal and extracting only the noise component by cancelling each signal component by its counterpart stored in the storage means, said noise component being phase inverted to be applied to the output of the second signal path. |
