Mass programmable FM stereo sound equalized assistive listening

Details Mass programmable FM stereo sound equalized assistive listening Mass programmable FM stereo sound equalized assistive listening

1997-02-03

1998-03-31

Vo, Nguyen

Telecommunications

Transmitter and receiver at separate stations

Frequency or phase modulation

4551861, H04B 700

Patent

active

057349649

ABSTRACT:
A mass programmable FM assistive listening system preferably consists of an FM transmitter adapted to send audio signals on a selected one of a plurality of predetermined available channels. The system includes a plurality of portable receivers which may be mass programmed to receive a selected one of said predetermined channels from a membrane style keypad. The audio signal is preferably stereo, sound equalized and within the frequency range of from about 72 to about 76 megahertz.

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dB50.TM. Personal Listening System, Jan. 1992.

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