Microphone noise

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Article #979

#979

From: Ken Tindle
Date: Thu, 27 Jul 1989 05:58

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I'm having (very unexpected) problems designing a microphone amp circuit.
Gain is no problem, per se.  Audio I get easily; it's the noise that goes
with it I could live without.

Now I already know the signal directly off a dynamic mike is small, but
evidently the noise floor is close to the audio.

I'll have to admit that I don't know enough about the nitty-gritty details
of microphone function to understand what is happening.  Is there someone
out there who's jumped this hurdle in the past, who'd be willing to give
me some pointers?

--------------------------\ /------------------------------------------
INTERNET:tindle@ms.uky.edu | "I heard you." -Kirk 
BITNET:tindle@ukma.bitnet  | "He simply could not believe his ears."     
Ken Tindle - Lexington, KY | -Spock, The Trouble With Tribbles
--------------------------/ \------------------------------------------

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!mailrus!ukma!tindle
From: tindle@ms.uky.edu (Ken Tindle)
Newsgroups: sci.electronics
Subject: Microphone noise
Summary: What's the secret of a quiet mike?
Message-ID: <12296@s.ms.uky.edu>
Date: 27 Jul 89 05:58:35 GMT
Reply-To: tindle@ms.uky.edu (Ken Tindle)
Distribution: usa
Organization: U of Kentucky, Mathematical Sciences
Lines: 17