Commentary systems

Details Commentary systems Commentary systems

1996-09-10

1998-12-29

Chang, Vivian

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Near field

455 41, H04B 500

Patent

active

058548440

ABSTRACT:
A commentary system for exhibits at museums includes a recorded commentary store and an output amplifier which supplies the recorded message to an aerial. Visitors to the museum are provided with a pick-up coil and an earphone connected directly to the coil. The coil is placed firmly closely adjacent the aerial to inductively couple the aerial and coil so that the visitor may hear the commentary. The pick-up coil and the earphone require virtually no maintenance and no power supply. The audio signal is generated solely by energy derived from the broadcast.

REFERENCES:
patent: 4824375 (1989-04-01), Weiner
patent: 4908869 (1990-03-01), Lederman
patent: 5128991 (1992-07-01), Murata
patent: 5201003 (1993-04-01), Pavel

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