| 摘要 |
<p>In a reproducing device, e. g., in the portable tape reproducer, regarding the input signal of the earphone (26, 30), the sound leakage from earphones (28, 30) is effectively avoided by directly detecting the signal level of medium to high frequency sounds, and suppressing the signal level depending on the detected result thereof, so that the deterioration in sound quality is prevented in advance and the sound leakage will be effectively avoided. <IMAGE></p> |
