| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine where a circuit constitution of a performance control board is simplified and manufacturing costs of the performance control board is reduced. SOLUTION: A voice control IC 84 has a plurality of channels for sending a voice signal, outputs a high voice signal by a single end system, and outputs a low voice signal by a BTL system. A power amplifier 85 amplifies each voice signal sent from the voice control IC 84 and sends it to speakers 51 and 52 for high sound output and a speaker 53 for low sound output. The power amplifier 85 is single-end-connected with the speakers 51 and 52 for high sound output, and the power amplifier 85 is BTL-connected with the speaker 53 for low sound output. COPYRIGHT: (C)2006,JPO&NCIPI
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