| 摘要 |
PROBLEM TO BE SOLVED: To provide a crime-prevention buzzer apparatus which can transmit an alarm sound even to distant persons by making the other crime-prevention buzzer apparatuses in the periphery newly output alarm sound when the alarm sound of the crime-prevention buzzer apparatus is issued. SOLUTION: The crime-prevention buzzer apparatus has: a sound collecting means which collects and amplifies ambient sounds; a sound analysis means which detects an alarm sound having a prescribed frequency component; a sound output means which outputs the alarm sound; and a transmission control processing means which controls intermittence of operation of the sound output means. When the sound analysis means detects a desired alarm sound from among the ambient sounds, the sound output means newly outputs the alarm sound by control of the transmission control processing means. COPYRIGHT: (C)2007,JPO&INPIT
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