| 摘要 |
PURPOSE:To prevent a sudden change for the sound given through the speaker or the like, by giving a stepped operation to the acoustic distortion compensating circuit according to the degree of the multipath distortion. CONSTITUTION:When the higher harmonic component contained in the demodulated signal sent from wave detecting circuit 4 increases, level discriminating circuits 922 and 923 included in multipath detecting ciricuit 9 lead out the output signals. And switching elements 522 and 523 are turned on successively in stereophonic demodulating circuit 5, and circuit parts 6a2 and 6b2 or 6a3 and 6b3 are switched to the active mode in sound quality changing ciricuit 6a and 6b. |
