| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an audio playback apparatus which optimizes maximum output of a power amplifying means that is a final stage, while taking into account all of the difference of input audio signal level, change in a DC voltage value being applied and the difference of a battery or an external power source. <P>SOLUTION: Limiter control is performed in such a way as to obtain a limiter level using a "table C" while a DC voltage relating to an external power source 12 is supplied with an input audio signal of "AUX IN" or "TUNER", to obtain the limiter level using a "table D" while the DC voltage relating to the external power source 12 is supplied with an input audio signal of "CD/DVD", on the other hand, to obtain the limiter level using a "table A" while a DC voltage relating to a battery 10 is supplied with the input audio signal of "AUX IN" or "TUNER", and to obtain the limiter level using a "table B" when a voltage of the battery 10 is detected with an input audio signal of "CD/DVD" 3. <P>COPYRIGHT: (C)2009,JPO&INPIT |
