Short story:

Buy one of these elements and some clip leads and try it.

Long story:

Seems like the basic problem is to get wide voltage swings like a old carbon mike would produce from a electret element as per this explanation

This Mic schematic gives a clue.

This list seems to be the long way around the horn.

Earnest is a real thinker, and here is what he thinks about building a cheap headset

here

DIY on a couple of lists

here

here

here

here

+++++++++++++++++++++++++++++++

good deal.

Now

these guys

http://art.simon.tripod.com/stealth.html

are talking about drilling out an airbud and mounting a mic elemnt within.

This allows recording of stereo phonic sound, just the way you ear would hear it.

Sneaking recording devises into concerts and such.

What if you took your idea of a In-The-Ear speaker in one ear, and put a MIC element in the other ear. You should be able to record the human voice, through the ear canal, and do away with ambient wind noise?

Open cockpit application

todd