Am So 19. April 2009 schrieb Daniel Willmann: > On Wed, 15 Apr 2009 01:09:15 -0300 > Werner Almesberger <wer...@openmoko.org> wrote: > > > Joerg Reisenweber wrote: > > > There's a way to detect buzzfix by rapidly switching on and off > > > MICBIAS and testing if you "hear" some buzz when recording from > > > builtin mic. Werner has created a small program to do the switching > > > job. > > > > I'm actually not sure if this approach works. You can hear the > > ~40-50 Hz buzz that program (*) generates well enough, but when > > I added a "buzzfix" capacitor, that artificial noise was still > > there. > > > > It could be that I did something wrong, though, including not > > actually applying the buzz fix. > > Maybe switching MICBIAS on and off creates an amplitude orders of > magnitudes higher than than the one introduced with GSM.
yup, for sure /j
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