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Gear / Technical Help => Microphones & Setup => Topic started by: Gutbucket on December 19, 2007, 04:19:18 PM
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I'm pretty well versed in how 'boundary mounted' mics (PZM's the obvious example) work and why. I know how the size of the boundary effects the lower limit of the 6dB boost perpendicular to the surface. The question is, does the 'boundary effect' only work when the surface is hard and reflective? If the surface is soft or fuzzy does that cancel the 'pressure zone' boost? Only at the frequencies that the surface absorbs?
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That is a question I am interested in as well. I think a reflective surface is nessesary to get the boost. A surface that absorbs will not cause the same cancellation of reflected sound that results in the boost.. I would bet the effect only applies to the frequencies that the surface does not absorb...
In other words, a fuzzy jdisc will not give a boundry boost...
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That's my half-educated guess too.