On Thu, 27 Jul 2006 03:35:34 -0500 Gian Paolo Mureddu <gmureddu@xxxxxxxxxxxxxx> wrote: > Anyway, my question is what are these, and why are these produced? I > know they respond to activity in the computer, mainly from X, or the > video card, but why? Bad shielding. The inside of a computer case is filled with electromagnetic fields. These induce currents in your soundcards circuits (mainly the DA's and output amplifiers), which are sometimes in the audible range. Oftentimes cheap soundcards also pick up noise from their direct electrical connection to the system, the bus. In your case the PCI bus. Flo -- Palimm Palimm! http://tapas.affenbande.org
