| 摘要 |
The amplifier controls the power voltage supplied to the amplifier according to the amplitude of the voice signal input while operating in A-class amplification. It includes an A/D converter (10) for converting analog voice signal to digital signal data, a digital signal processor (30) for processing the digital input of voice data to a delayer (50) for delaying the signal from the digital signal processor (30) by a certain duration (Td), the 1st D/A converter (60) for converting the output of the delayer (50) to analog signal, a peak level holder (70) for holding/outputting the peak level data of the signal from the digital signal processor (30), and an output power amplifier (80).
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