[sdiy] Low noise electret condenser microphone amp?

[Edu Silva]

Hi list,


Bert Schiettecatte wrote:
> 
> I built a simple amplifier circuit I found on the net, based on an
> LM324 op-amp.



ARGH !!!!!



> Any ideas on where I can find a really good microphone amplifier
> circuit?



http://myweb.tiscali.co.uk/crowley/mattweb/balelectretmic/index.htm

http://www.ti.com/sc/docs/psheets/newdocs/microphone_preamps.html

http://www.mindspring.com/~benbradley/pre.html

If you want more...

http://www.epanorama.net/links/audiocircuits.html#micamp



> It should be able to pick up sound 40cm away and amplify it to a
> reasonable level.



It'll be easier using a cardioid capsule, like a Panasonic WM-55:

http://www.panasonic.com/industrial/components/rec_mic.htm


-- 
abraços,

Edu Silva
ES2 Audio
Brazil