On Sat, Apr 03, 2010 at 05:48:43PM -0400, Rick Green wrote: > I'm using a FOcusrite Saffire pro 26 I/O with ffado, jack, and Ardour to > make multitrack recordings of live concerts, to my emachines M6810 laptop > running ubuntustudio. I'm plagued by noise that sounds to me like RF > interference from the laptop, getting into the audio portions of the > interface. It's most obvious when I'm at home trying to mix down my > recordings, as its almost constant in my monitors and most noticable in > a quiet room, but it also manifests itself sometimes during shows, showing > up on the input lines to the interface, which are plugged 'half-way' into > the FOH mixer's channel inserts, so it invades the PA and the performers' > monitors. WHen that happens, I've no other choice but to abandon the > recording and shut down the laptop. > > Has anyone else encountered this problem? Got any suggestions how to > filter it? I'm going to try some ferrite cores snapped around the > firewire cable first. Anything else I might try? > I had exactly the same problem, almost exactly 3 years ago when I first gigged with a laptop. The solution was to lift the ground on the AC adapter, using one of those three-prong-to-two-prong adapters. Haven't had a problem since then, been gigging my ass off the whole time (although a year ago I mostly switched to using my EEE netbook, which only has a two-prong adapter anyway, and never had the problem with it). -ken _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
