Rearward sound enhancing apparatus

Details Rearward sound enhancing apparatus Rearward sound enhancing apparatus

1996-06-28

1997-11-25

Dang, Khanh

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181130, 381187, H04R 2500

Patent

active

056915152

ABSTRACT:
A rearward sound enhancing apparatus which includes a pair of ear covers mounted on a headband. Each ear cover includes an inner compartment and outer compartment with rearward facing openings. A microphone is provided in each outer compartment, and a speaker is provided in each inner compartment. Sound received through the rearward facing opening is picked up by the microphones, amplified, and directed to the speakers. The dual compartment arrangement of the ear covers eliminates audio feedback which would otherwise occur due to the close proximity of microphones and speakers in the ear covers.

REFERENCES:
patent: 373835 (1887-05-01), Pitre
patent: 1528080 (1925-03-01), Scher
patent: 4471174 (1984-09-01), Nava
patent: 5044014 (1991-09-01), Cornale et al.
patent: 5086789 (1992-02-01), Tichy
patent: 5125032 (1992-06-01), Meister et al.
patent: 5231704 (1993-08-01), Hildenbrand
patent: 5361419 (1994-11-01), Bernstein
patent: 5503497 (1996-04-01), Landis et al.

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