Sound level detector with program interrupt

Details Sound level detector with program interrupt Sound level detector with program interrupt

1979-06-11

1981-02-10

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

307117, 340540, G08B 1322

Patent

active

042504996

ABSTRACT:
A sound receiver outputs a signal to a sound level detector and to a notification signal generator. The sound level detector outputs a signal to a first input of a switch, and the notification signal generator outputs a signal to a second input of the switch. Also input into the switch is the program from a program source. Under control of the sound level detector, the switch either outputs the program or the notification signal to an output element of the alarm system whereby the program is interrupted and the notification signal substituted therefor on detection of a sound level greater than a preselected level.

REFERENCES:
patent: 3014199 (1961-12-01), Dill et al.
patent: 3471846 (1969-10-01), Cotter et al.
patent: 3701024 (1972-10-01), Knowles et al.
patent: 3719891 (1973-03-01), Lee
patent: 3873963 (1975-03-01), Neal et al.
patent: 3876940 (1975-04-01), Wickford et al.
patent: 3984803 (1976-10-01), Hawk et al.
patent: 4091366 (1978-05-01), Lavallee

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