Accident sound detection circuit

Communications: electrical – External condition vehicle-mounted indicator or alarm – Transmitter in another vehicle

Patent

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Details

340906, 340937, 340907, 340916, 340903, 340905, G08G 100

Patent

active

060879602

ABSTRACT:
An accident sound detection circuit includes an accident sound detection block that detects an accident sound from a sound signal inputted from an environmental sound detection unit and outputs an accident sound detection signal a power spectrum calculator for obtaining a power spectrum in regard to a sound signal when acquiring the accident sound detection signal outputted from the accident sound detection block as a trigger signal, a spectrum pattern calculator for forming a pattern of the power spectrum, and a pattern comparator circuit for comparing the formed spectrum pattern and a set pattern set in a pattern generating circuit beforehand and generating a final accident sound detection signal if the patterns coincide with each other.

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