AUDIO SIGNATURE OF CLOTHING

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Authors
  1. Uglene, W.V.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);M.E.T.A. Research Inc, Richmond BC (CAN)
Abstract
The study established an experimental technique for the characterization of sound emitted by clothing or constituent materials and components. We used a relatively simple apparatus consisting of a decibel meter, shotgun microphone, sound mixing console and a Macintosh computer equipped with both Audiomedia II hardware and Sound Designer II software. Sound Designer II was used to conduct frequency analysis using Fast Fourier Transforms. The system was applied to the noise generated by opening and closing a variety of clothing fasteners currently used on Canadian Forces clothing. The maximum sound level generated by touch and close fasteners was found to depend on the squre root of the width of the closure as well as the square root of the rate of opening. That generated by slide fasteners was found to depend on the composition of the fastener teeth as well as the square root of the rate of opening. Plastic may be quieter than metal. Sound levels produced by slide release buckles were also measured. Analysis of the sound signatures indicates that different signatures exist for each different type of fastener and particular mode of opening.
Keywords
Velcro;Quite clothing
Report Number
DCIEM-97-CR-10 — Contractor Report
Date of publication
27 Sep 1996
Number of Pages
39
DSTKIM No
97-03407
CANDIS No
503484
Format(s):
Hardcopy;Document Image stored on Optical Disk

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