Microphone behind membrane...

Thread Starter

Externet

Joined Nov 29, 2005
2,220
Hi.
A plain electret microphone needs protection as works on a highly humid and corrosive environment.

What would be less detrimental for sound fidelity;
-Being inside a deflated latex 'party' balloon,
-Being inside an inflated latex 'party' balloon,
-Being inside a sealed cellophane enclosure,
-A silicone balloon, inflated or deflated,
-Embedded in RTV silicone,
-A rigid sealed plastic box,
Or other you may suggest, the point is the rigidity or elasticity of the membrane enclosing it, or, what material/method would impair it the least its sound transmissibility?
 

Wendy

Joined Mar 24, 2008
23,421
My 1st thought is touching a rigid plexiglass panel, which would become a sounding board and transmit the sound vibrations to the mic. Any thing that could absorb or damp the vibrations like a rubber surface should be avoided.Just my $0.02.
 

BR-549

Joined Sep 22, 2013
4,928
Is the mic fixed/stationary? Can it accumulate debris? Hit with wash water?

How long will a baggie and a rubber band last? For exploratory purposes.

You could compare your examples with a scope.
 

AlbertHall

Joined Jun 4, 2014
12,346
Hi.
A plain electret microphone needs protection as works on a highly humid and corrosive environment.

What would be less detrimental for sound fidelity;
-Being inside a deflated latex 'party' balloon,
-Being inside an inflated latex 'party' balloon,
-Being inside a sealed cellophane enclosure,
-A silicone balloon, inflated or deflated,
-Embedded in RTV silicone,
-A rigid sealed plastic box,
Or other you may suggest, the point is the rigidity or elasticity of the membrane enclosing it, or, what material/method would impair it the least its sound transmissibility?
It seems to be a fairly standard way of weatherproofing a microphone to put it in a condom.
 
Last edited:

atferrari

Joined Jan 6, 2004
4,770
Hi.
A plain electret microphone needs protection as works on a highly humid and corrosive environment.

What would be less detrimental for sound fidelity;
-Being inside a deflated latex 'party' balloon,
-Being inside an inflated latex 'party' balloon,
-Being inside a sealed cellophane enclosure,
-A silicone balloon, inflated or deflated,
-Embedded in RTV silicone,
-A rigid sealed plastic box,
Or other you may suggest, the point is the rigidity or elasticity of the membrane enclosing it, or, what material/method would impair it the least its sound transmissibility?
It would be interesting to try Gore.tex. Who knows?
 
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