Acoustics – Diaphragm – With resonant chamber
Patent
1989-03-21
1992-12-22
Fuller, Benjamin R.
Acoustics
Diaphragm
With resonant chamber
181148, 181156, 381 94, 381 96, 381159, H04R 128
Patent
active
051735750
ABSTRACT:
A compact acoustic apparatus in which a vibrator is arranged in a Helmholtz resonator having a resonance port, and is driven to radiate a resonant acoustic wave so as to perform lower bass sound reproduction, is characterized in that a cabinet is reduced in size by externally projecting the resonance port from the cabinet, and/or a boundary condition change buffer means is arranged at an opening portion of the resonance port to prevent noise caused by an air flow flowing through the resonance port.
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Fuller Benjamin R.
Yamaha Corporation
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