Noise attenuating in ported enclosure

Details Noise attenuating in ported enclosure Noise attenuating in ported enclosure

1997-01-23

1998-08-11

Lee, Eddie C.

Acoustics

Combined

181145, 181156, 181199, 181225, G10K 302, H05K 500, F01N 700

Patent

active

057929998

ABSTRACT:
Noise attenuation apparatus comprising an enclosure having a wall separating an interior and an exterior. The enclosure defines a volume. The volume is characterized by an acoustic compliance and includes a device producing noise. The noise has spectral components predominantly in a noise frequency range. A first port has a first acoustic mass. The port passes through the wall between the interior and the exterior wherein the acoustic compliance and the first acoustic mass are configured to establish a resonant frequency outside the noise frequency range.

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