Arnold Krille wrote: > On Sunday 24 January 2010 18:26:13 Martin Peach wrote: >> So I took the card out and now it's running in a WinXP box with no >> issues. So it's definitely not the capacitors. I think the sound of dead >> capacitors would be more like AC hum. > > Dead capacitors are not causing AC hum, they are causing high-frequency hiss > because the high frequencies of the switching powersupply in your machine > isn't filtered any more. (One of the problems I am facing here with my diy amp > using an old PC PSU while trying to not use capacitors for filtering.) > Well it depends. High frequency noise is usually filtered using small-valued caps because electrolytics are just no good at high frequencies. But yes, there should be no AC hum from a PC PSU, just a mess of high-frequency spikes. But it should have _some_ harmonic content, not just white noise. Usually sounds like a noisy whine. Martin _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
