[sdiy] High pitched noise on codec problem

[julian schmidt]

Am 05.12.2013 19:12, schrieb Eric Brombaugh:
>
> Also - it's probably not a good idea to ground the unused input - it 
> expects to be biased at ~AVDD/2, so grounding looks like a fullscale 
> negative input which might do odd things to the input circuits.
>
on a 2nd thought... shouldn't any DC voltage be blocked by the cap after 
the opamp anyways?

julian