Personal ambient sound referenced annunciator

Details Personal ambient sound referenced annunciator Personal ambient sound referenced annunciator

1979-12-10

1981-10-27

Pitts, Harold I.

Communications: electrical

Digital comparator systems

340407, 340566, G08B 1300

Patent

active

042976774

ABSTRACT:
A personally worn or portable annunciator device for alerting, warning, training, communicating or diagnostic use for people especially those with hearing impairments. This device which can be activated locally or remotely has as one of its means of generating a tactile sensation a transducer or buzzer, as well as a visual light both of which are activated automatically upon the detection of an audio signal substantially above the local ambient noise, or by a RF signal remotely generated by an auxiliary unit.

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patent: 4180810 (1979-12-01), Muncheryan
patent: 4225859 (1980-09-01), Zetting

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