On Mon, 28 Jan 2008, Wade Nelson wrote: > I know this is probably hardware-specific rather than ALSA-specific, but > I was hoping someone could point me in the right direction here... > > I have: > Guitar -> Behringer Xenyx mixer -> M-Audio Audiophile 2496 RCA inputs > > When the setup is sitting there, idle and active, there is a very very > high-pitched light squeal coming from the PC speakers. It's so > high-pitched that only myself and so far two other people I've had > listen can hear it. However, when I touch my hand to the guitar > strings, the squeal completely disappears. > > To me this sounds like a grounding issue, but I'm able to reproduce this > across several different guitars with different pickups & pickup > arrangements. No probably not grounding but some sort of feedback. Does the pitch change-- eg if you change the tuning of the string? What is the output going to? Try putting some high freq falloff into the output. > > Any ideas? > > > > ---------------------- > Wade Nelson > hollywoodb@xxxxxxxxxxx > "I may have to share this planet with animals, > but I'm doing my damn best to eat every last one of them." > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Alsa-user mailing list > Alsa-user@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/alsa-user > -- William G. Unruh | Canadian Institute for| Tel: +1(604)822-3273 Physics&Astronomy | Advanced Research | Fax: +1(604)822-5324 UBC, Vancouver,BC | Program in Cosmology | unruh@xxxxxxxxxxxxxx Canada V6T 1Z1 | and Gravity | www.theory.physics.ubc.ca/ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
