Electrical audio signal processing systems and devices – One-way audio signal program distribution
Patent
1994-04-07
1996-08-20
Coles, Sr., Edward L.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
359152, 359172, H04B 900, H04B 1000, H04B 1004
Patent
active
055486541
ABSTRACT:
An infrared assistive listening system capable of enhanced performance in medium-sized locations, such as courtrooms, classrooms, and conference rooms, is realized by a system comprising a pressure zone microphone capable of picking up distant speakers, a high-gain pre-amplifier, an equalization and pre-emphasis circuit, an automatic gain control and limiting circuit, a mute feature capable of remote activation, a FM modulator, a pulse width modulator, and a high-power single front throw infrared emitter. Another embodiment of the invention employs an multi-directional infrared emitter array in conjunction with the single front throw emitter.
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Coles Sr. Edward L.
Grant II Jerome
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