Acoustic liner for attenuating noise

Details Acoustic liner for attenuating noise Acoustic liner for attenuating noise

1980-04-17

1981-10-27

Hix, L. T.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181292, E04F 1704

Patent

active

042968313

ABSTRACT:
An acoustic liner for attenuating noise comprises a backing face and a perforated facing sheet arranged over and spaced from the backing face, the perforated facing sheet being on non-uniform thickness in the direction of noise propagation.

REFERENCES:
patent: 1953410 (1934-04-01), Jacopson
patent: 2652126 (1953-09-01), Mazer
patent: 2779429 (1957-01-01), Mazer
patent: 2853147 (1958-09-01), D'Eustachio
patent: 2994401 (1961-08-01), Bourne et al.
patent: 3113634 (1963-12-01), Watters
patent: 3630312 (1971-12-01), Woodward et al.
patent: 4109750 (1978-08-01), Wirt

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