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waterproof microphone

Hi!

I'm designing a portable device containing a microphone. As this device is to be used outdoors (field work), it should be waterproof (at least rain proof). What possibilities exist to mount the microphone protected from water? I already considered special waterproof microphones (e.g. KNOWLES ACOUSTICS MR and WP series) or using a waterproof speaker as a microphone (sound quality doesn't matter as the instrument merely registers the peak volume), but maybe there is a simpler (and cheaper and smaller) solution... Ok, putting the whole thing in a plastic bag may be simple and cheap, but I'm looking for something which is more "professional" ;-)

Thanks!

Eugen

Reply to
Eugen Artus
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Chris

Reply to
christofire

Hm, ok, putting a condom over it may work, but is roughly the same category as the plastic bag - it's not really appropriate for a device which will be produced in (small) series. I would also doubt the durability of the condom (UV radiation...).

Eugen

Reply to
Eugen Artus

What a coincidence, my lab is developing microphone-proof water as we speak.

Reply to
a7yvm109gf5d1

Eugen Artus wrote: .

What possibilities exist to mount the microphone protected from

..

If you just want to know that there is a signal, try a hydrophone.

Alan

Reply to
Alan Peake

How about the standard electret mic in an aluminum capsule . . . take a sheet of some flat light plastic like polyethylene or mylar film and super glue it to the front then cut away the excess around the face. On the connection terminal side solder wires on, paint with a high quality oil based varnish, then shrink fit sleeves over the connections.

With a little care it would hardly be any different than the standard electret capsule. Buy an electret already mounted in a holder and water proof each one.

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Reply to
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"Eugen Artus"

** What you are asking for may be impossible.

All depends on what sort of SPLs are actually trying to measure.

Cos a mic exposed to rain and wind is gonna make a lot of noise you do not want.

..... Phil

Reply to
Phil Allison

s

..

Make a laser mic, its not hard and it doesn't matter if the beam gets wet.

Reply to
Comcast1952

In surgical theatres things from microscopes to joy sticks to microphones are routinely covered with plastic bag covers - maybe see what they use and buy them.

Reply to
K Ludger

Especially wind!

Reply to
ian field

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