Acoustics – Plural diaphragm sound sources – Plural chambers
Patent
1983-08-15
1985-11-19
Adams, Russell E.
Acoustics
Plural diaphragm sound sources
Plural chambers
181156, 181199, H05K 500
Patent
active
045536287
ABSTRACT:
A speaker unit utilizing the sound radiation from the front and rear faces of a diaphragm can be constructed by placing the diaphragm in an acoustic baffle to isolate the back side and front side radiation and propogating the backside radiation through a tube to an acoustic resonator. This arrangement acoustically backloads the speaker and extends the frequency range over which piston-like motion of the diaphragm occurs without speaker breakup. A loudspeaker system producing good stereo image perception and suited for stereo sound reproduction for home or studio sound monitoring use can be constructed with a linear array of loudspeaker units. The sound radiation from the linear array is kept in phase over the audible range and through a wide angle about the axis of the array.
REFERENCES:
patent: 3299206 (1967-01-01), Klepper
patent: 3944757 (1976-03-01), Tsukamoto
patent: 4146744 (1979-03-01), Veranth
Klepper, "Constant Directional Characteristics From a Line Source Array"; The Journal of Audio Engineering Society, vol. 2, No. 3, Jul. 1963.
Adams Russell E.
Boswell K. H.
Brown Brian W.
O'Brian Edward D.
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