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Date: 02/09/00 at 11:44 AM
Posted by: Rod Sherrill
E-mail: sherrill@novatechcorp.net

In Reply to: Re: circuit wanted posted by Kurt on 02/09/00 at 6:22 AM:

: I want to record my voice into computer. i have built a analog-to-digital circuit. But I can't
: get the analog signal from the microphone. Does any one who has this part of circuit.?
: i.e. Convert sound to various voltage using a microphone.
: Urgent! Thank you for your attention

The signal from the mic may need to be amplified before the A to D. I not an expert on audio amplifiers but a good one should be matched to the mic (compensation). A simple op amp with enough gain to boost the signal to a higner level could be use to experiment with. Or use the preamp in an home audio system to amplifiy the mic signal before the A to D. I hope this helps.

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