| 摘要 |
PROBLEM TO BE SOLVED: To obtain an excellent digital wireless microphone system whose bit rate is variable on purpose, whose receiver incorporates a digital effecter, which is provided with external expansion performance using a digital output terminal and a external controller terminal and whose cost is suppressed. SOLUTION: A receiver 2 receives a radio wave with a frequency emitted from a transmitter 1, digitally demodulates a compressed digital signal, decodes the demodulated signal to synthesize a PCM digital signal, uses a digital effecter to apply effect processing to the synthesized signal so as to output an analog audio signal and a digital signal, and consists of a high frequency amplification- frequency converter 9, an intermediate frequency amplifier 10, a demodulator 11, a code conversion.de-interleave.error correction circuit 12, a compression signal decoder 13, a digital effecter 16, a D/A converter 17, and an audio amplifier 18, and also with an external control terminal 19 and a digital output terminal 20 taking external expansion into account. |
