| 摘要 |
PROBLEM TO BE SOLVED: To provide an emergency broadcasting system which can broadcast a current broadcasting by normal broadcasting and an emergency broadcasting simultaneously without a sense of discomfort, making smooth broadcasting available without any interruption of currently viewed program. SOLUTION: The emergency broadcasting system is equipped with a weight adjustment means 110 for adjusting the weights of three signals, that is, an L channel sound signal SL from a sound source 10L for L channel, an R channel sound signal SR from a sound source 10R for R channel, and an emergency sound signal SE from a sound source 10E for emergency broadcasting; and an emergency sound mixing switching means 130 which switches between mixing and unmixing of a weight-adjusted emergency sound signal SEa into weight-adjusted L channel sound signal SLa and R channel sound signal SRa. The switching operation of the switching means 130 is controlled by a system controller 120. COPYRIGHT: (C)2007,JPO&INPIT
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