-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Werner Almesberger schrieb: > I wrote: >> Florian Zeitz wrote: >>> FWIW I have tried something similar. I put a small (100 Ohm IIRC) >>> resistor between MIC and GND, that doesn't help at all though. It just >>> makes things worth. >> :-( >> >>> If you think it's more likely to work I can try a >>> short everything or a completely different approach (still have two >>> 2.5mm jacks lying around) if you want. >> I guess it can't hurt to try our luck, even though it seems unlikely >> this will help. I'd go for the "short everything" variant. The >> amplifier is protected by 33 Ohm resistors R4405 and R4407, so this >> should be safe. > > Did you try it ? Joerg has suggested that this experiment may actually > be quite promising. So what's a wasted EUR 1 component compared to the > possibility of eternal fame ? ;-) > Got around to try it just today. The problem for me with testing is that I (too) have a pretty good signal where I life (Actually orignating about 300m away ;) ), so that if there is buzz it is relatively silent. To reproduce it reliably I just went into the cellar and did a longer test call. Interestingly the buzz was sometimes pretty loud and sometimes hardly present which did not seem to coincide with the signal strength. Actually once I noticed the buzz getting louder when the signal got stronger oO. What I annoyingly had all the time was a pretty loud echo though :(.
As for the shorted plug: If there is buzz it amplifies it a tiny bit, if there is no buzz it doesn't seem to induce buzz, but it definitely does not seem to make things better. > Oh ... Andy, did you try a shorted headset plug ? Given that you're > one of the lucky few in Openmoko who can actually reproduce the > buzz ... > > - Werner -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFI4QB20JXcdjR+9YQRAuG8AKC1LkjEi2QXI8ye8Vr3nq+a/6IgygCdFUIX +T+yIvHpuqQW3lyfHuBnab8= =x8qk -----END PGP SIGNATURE----- _______________________________________________ hardware mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/hardware
