Matching an acoustic driver to an acoustic load in an acoustic resonant system
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United States of America Patent
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-
Aug 12, 2003
Grant Date -
Dec 5, 2002
app pub date -
Apr 19, 2002
filing date -
Apr 20, 2001
priority date (Note) -
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Abstract
A method for matching an acoustic load and an acoustic driver in a resonant acoustic system, and the acoustic system so formed. The load and driver may be independently designed. The invention provides, inter alia, a matching volume positioned between the acoustic driver and load that is substantially greater than a stroke volume of the driver. The matching volume is sized such that, in combination with the moving mass, the characteristic stiffness of the acoustic driver and the characteristic load impedance, a resulting pressure wave produces an operating resonant frequency substantially equal to the preferred operating frequency of the load. Alternatively, or in addition thereto, a stroke volume of the acoustic driver can be adjusted.
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