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In Reply to: Re: How to measure the acoutstic transparency of fabric posted by Thomas Jordan on June 21, 2000 at 14:40:54:
Great idea, but what if the fabric I've chosen isn't transparent enough, what happens to me :-) I'm gonna go try this now (with burlap FIRST).
I also thought of using a light meter, but the fabic is probably transluscent enough that the reading would measure more than what went through the holes.
I'd rather use an spl meter! But if you were to set up the jig for the measurement (signal generator, amplifier, speaker, spl meter etc etc) in a cloth shop, you may have to lease out the shop for half-a-day or something.. A better idea would be to take samples of prospective merchandise and give it a try by covering the tweater of your hifi with it, one at a time. Hope you get the point. It is the high frequency attenuation that is most prominent.Tweaker
Covering a speaker was my next guess. I presume I need to measure for attenuation both on and off-axis and at several frequencies? Since I don't have an oscillator, I can't do a freq. sweep. Thanks for the suggestions, I'll try it.
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