Warning device programmable to be sensitive to preselected sound

Details Warning device programmable to be sensitive to preselected sound Warning device programmable to be sensitive to preselected sound

1995-04-12

1997-07-22

Kuntz, Curtis

Electrical audio signal processing systems and devices

Monitoring of sound

3404071, H04R 2900

Patent

active

056510705

ABSTRACT:
A listening device for alerting an individual unable to hear warning signals having a means for prerecording a warning signal, converting the signal into digital information, and storing the digital information. The device further includes a means for continuously comparing the digital information to ambient sound information converted into ambient digital information and a means for alerting the individual with an alerting signal when the digital information matches the ambient digital information corresponding to the warning signal.

REFERENCES:
patent: 4297677 (1981-10-01), Lewis et al.
patent: 4558459 (1985-12-01), Noso et al.
patent: 4731603 (1988-03-01), McRae et al.
patent: 4853674 (1989-08-01), Kiss
patent: 5381129 (1995-01-01), Boardman

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