Emergency signal warning system

Details Emergency signal warning system Emergency signal warning system

1989-06-30

1990-09-11

Shaw, Dale M.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

340907, G10L 708, G06G 1095

Patent

active

049568663

ABSTRACT:
A siren detection system, particularly suited for installation in an automobile for providing a warning to the driver when an emergency vehicle is operating a siren in the vicinity of the automobile, utilizes a microphone on the automobile to detect the siren signals. An analog-to-digital conversion of the signal obtained from the microphone is supplied to a digital signal processor which is programmed to provide high selectivity of the frequency of the input signals, with improved noise rejection and improved frequency determination.

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