摘要 |
PROBLEM TO BE SOLVED: To provide an intercom system wherein intercoms respectively provided to a management room and singing rooms perform transmitting and receiving of speech that improves the recognition of a call tone independently of a sound volume in the singing rooms in the karaoke facility at low cost. SOLUTION: An intercom communication network 14 is built up in the karaoke facility, a karaoke playing unit 22 installed in each of karaoke rooms is provided with a signal output means for outputting a sound volume level signal when the sound volume of playing music output from a speaker is adjusted, a room intercom 23 installed in each karaoke room and connected to the intercom communication network 14 receives the sound volume level signal from an external terminal 61 and a call sound volume setting means 39 is configured to adjust the calling sound volume on the basis of the sound volume level signal. COPYRIGHT: (C)2007,JPO&INPIT
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