Idle noise from a TL082 opamp

@jremington How would I go about powering the 5v mic with 9v? Can I use a voltage divider?
And also, if parallel capacitors add up why shouldn't I use a 10.1 uF across each battery instead?

Thank you, I'll check that out.

@ted Yeah I'll look into that. I might copy Hackaday's cold dead hands after all. I don't have one handy though