| 摘要 |
<p>An apparatus for reproducing signals which are pre-stored in a memory, comprises a memory pre-stored with signals made up of a level and gain change codes, a detecting circuit for detecting the gain change code from a signal read out from the memory, and a converting circuit supplied with the signal read out from the memory, for producing a reproduced signal having a waveform which is essentially the same as the original analog signal waveform. The level code is an original analog signal which is amplified, sampled, and digitally coded. The original analog signal has a level smaller than threshold values in a small level region. The gain change code has predetermined values and replaces the level code at least for a certain period from a predetermined time in the small level region. The converting circuit is variably controlled of a gain thereof after receiving an output detection signal of the detecting circuit so as to attenuate the level of the signal read out from the memory to an extent complementary to the amplification performed at the time when the signal is pre-stored in the memory, and subjects the signal read out from the memory to a digital-to-analog conversion regardless of whether the detection signal is received.</p> |
