Voice warning device using entertainment speaker

Details Voice warning device using entertainment speaker Voice warning device using entertainment speaker

1980-11-04

1983-06-21

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

With particular coupling link

340531, 340 52F, 340692, 34087009, 179 1GJ, 179 1SM, 179 1VE, 179 1SW, 455137, 455149, 455227, G08B 2502, H04M 100

Patent

active

043896391

ABSTRACT:
A device for producing a voice warning over a speaker which is also used with an entertainment sound production system such as a radio or cassette recorder. The voice warning device incorporates a switching device in the circuit between the speaker and a source of entertainment sound-bearing electric signals, and also incorporates a mechanism for selectively generating electric signals representing human voice sounds for conveying warnings. When a warning signal is being generated, the switching device is switched over from its state where it connects the speaker to the entertainment sound-bearing electric signals to its state where it connects the speaker to the warning signals. Optionally, several different speakers of an entertainment system may be selectively connected to said warning signals by several switching devices.

REFERENCES:
patent: 3098975 (1963-07-01), Schneiderman
patent: 3870818 (1975-03-01), Barton et al.
patent: 3876940 (1975-04-01), Wickord et al.
patent: 4006447 (1977-02-01), Narbaits-Jaureguy et al.
patent: 4107464 (1978-08-01), Lynch et al.

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