Universal listening device

Details Universal listening device Universal listening device

1986-12-22

1989-07-18

Isen, Forester W.

Electrical audio signal processing systems and devices

Stethoscopes, electrical

A61B 704

Patent

active

048500232

ABSTRACT:
A listening device for detecting audio frequency sounds and presenting them at increased sound levels to a user's ears. The listening device comprises a lighweight housing with a sound port disposed on a front wall and containing audio processing components for detecting input sound waves, amplifying them, and transferring them to bi-aural sound transfer means coupled to the housing. The bi-aural transfer means directs amplified sound to both ears of a device user simultaneously. The listening device is very lightweight and very compact, with the main housing being less than about 1 cubic inch in volume
The listening device employs an acoustical connector on the front wall to allow efficient transfer of sound waves from a series of acoustical adapters, generators, and probes. One such probe is highly useful for automotive engine analysis and another is highly useful for medical applications.

REFERENCES:
patent: 2892034 (1959-06-01), Fielding, Jr.
patent: 2900039 (1959-08-01), Burnett
patent: 3247324 (1966-04-01), Cefaly
patent: 3276535 (1966-10-01), Shaw
patent: 4438772 (1984-03-01), Slavin
patent: 4633498 (1986-12-01), Warnke et al.

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