Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent
1989-12-01
1990-12-25
Fuller, Benjamin R.
Acoustics
Anatomic or prosthetic relation
Ear and mouth
181150, 181151, 181153, 181155, 181199, 381158, 381160, 381183, 381187, 381188, 381189, 381205, H05K 500
Patent
active
049795864
ABSTRACT:
An acoustically shielded speaker enclosure for use in the ear pockets of motorcycle helmets is disclosed wherein parasitic sound waves emitted from the rear side of an enclosed audio loudspeaker are prevented from entering the motorcycle rider's ear and from mixing with and distorting the primary sound waves issued from the audio loudspeaker directed at the rider's ear. The acoustically shielded speaker enclosure consists of a pair of joined together cup-shaped housing assemblies forming a shortened cylinder adapted to enclose and secure an audio loudspeaker, the enclosure having openings in one face of the housing assemblies to allow passage of the primary sound waves from the contained loudspeaker. An acoustic shield attached to the speaker enclosure cylindrical side extends to the edge of the ear pocket and is sealed there. The parasitic sounds emanating from the rear of the loudspeaker through the rear of the speaker enclosure are this prevented from coming around the speaker enclosure by the acoustic shield to enter the rider's ear or to mix with and distort the primary sound waves.
REFERENCES:
patent: 1085916 (1914-02-01), Hutchison
patent: 2403418 (1946-07-01), Volkmann
patent: 2862071 (1958-11-01), Bonnaffous
patent: 3021526 (1962-02-01), Lastnik
patent: 3549831 (1970-12-01), Forney
patent: 3586977 (1971-06-01), Lustig
patent: 3602329 (1971-08-01), Bauer et al.
patent: 3916312 (1975-10-01), Campbell
patent: 4424880 (1984-01-01), Murayama
patent: 4491699 (1985-01-01), Walker
Lazzeroni John J.
Lazzeroni Melinda K.
Fuller Benjamin R.
McClanahan J. Michael
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