Noise dampening due to a vibration source
Noise dampening due to a vibration source
(OP)
Hi
Assuming a small disk (say, diameter of 10 mm, width of 3 mm) is vibrating at a certain frequency in air, producing sound. Assume the first version of such disk is made out of steel, and a second version is made out of a soft material like sponge or hollow rubber. Will the softer material produce less sound? Or are they about the same?
Thanks
Assuming a small disk (say, diameter of 10 mm, width of 3 mm) is vibrating at a certain frequency in air, producing sound. Assume the first version of such disk is made out of steel, and a second version is made out of a soft material like sponge or hollow rubber. Will the softer material produce less sound? Or are they about the same?
Thanks





RE: Noise dampening due to a vibration source
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RE: Noise dampening due to a vibration source
RE: Noise dampening due to a vibration source
At sufficiently low frequency they will be similar.
Keywords for your literature search are "radiation efficiency" "Coincidence speed" "critical frequency"
Cheers
Greg Locock
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