Noise reducing resonators, or so-called silators

Details Noise reducing resonators, or so-called silators Noise reducing resonators, or so-called silators

1980-11-12

1982-04-20

Hix, L. T.

Acoustics

Sound-modifying means

Sound absorbing panels

181288, 181291, G10K 1116

Patent

active

043254616

ABSTRACT:
A noise reducing resonator, herein referred to as a silator due to its no silencing quality, is made up of primary struts forming a main frame and secondary struts forming at least one subframe enclosed by a vacuum tight cover to enclose a vaulting evacuated volume. Each frame has a given span width and a vaulting height corresponding to 0.005 to 0.05 times the respective span width. The frames are arranged in a hierarchic order which means that a larger main frame holds a smaller subframe which in turn holds a still smaller subframe and so on. The resonance frequency increases with the number of subframes held in a main frame. Interconnected silators may cover entire surface areas for noise reduction or absorption.

REFERENCES:
patent: 2710335 (1955-06-01), Wong
patent: 4228868 (1980-10-01), Bschorr

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