| 摘要 |
PURPOSE:To prevent the deterioration of wiring work and the reduction of reliability while reducing the number of wirings connecting each part by performing the multiplex transmission of the output signal of acoustic signal source, the output signal of an acoustic signal processing part, and a control signal controlling the operation of the acoustic signal source, speaker part, and acoustic signal processing part. CONSTITUTION:Decoders separating the acoustic signal from the control signal and encoders synthesizing them are respectively provided with plural acoustic signal sources 2,3,4, plural speaker parts 6a to 6f, acoustic signal processing part 5, and operation control part 1. The input terminal of the encoder and the output terminal of the decoder are successively connected loop-shape, and the multiplex transmission of the output signal of the acoustic signal source, the output signal of the acoustic signal processing part 5, and the control signal controlling the operation of the plural acoustic signal sources, the plural speaker parts, and the acoustic signal processing part 5 are performed via a transmission line 7. When the acoustic signal source selected by the operation control part outputs the acoustic signal to the transmission line, the acoustic signal is inputted to the acoustic signal processing part, outputted as the acoustic signal with plural channels after the signal processing directed by the operation control part. Each speaker part selects the signal of the corresponding channel to drive the speaker after amplification. |
