On Sat, 2010-02-13 at 19:58 +0000, Mike Stansberry wrote: > On 2/13/2010 11:17, Peter Hamilton wrote: > > I'm experimenting with running two instances of fldigi, one for Tx/Rx > > and one for monitoring, using the PC's integrated sound for the primary > > instance and a cheap no-name USB sound device for the other. > > > > The processor load of the instance using the on-board sound is about > > 12%, the processor load of the USB one is about 75%. > > > > Swapping the sound devices between fldigi instances shows that the USB > > device is the problem. > > > > Is this to be expected? Is it worth trying other USB sound devices or > > should I get a PCI card instead? > > > > 3.13BX, Portaudio, Xubuntu 9.10. > > > > I've been seeing this on Ubuntu 9.10 since it first came out. I > submitted a bug report to the Ubuntu developers but I haven't seen > anything come out of it. I've moved back to Ubuntu 9.04. The USB > device I use is the SignaLink USB. > > 73, Mike, K0TER I have been having reasonable results with Pulse audio and a signaLink USB. Main issue is random muting of audio but not on the USB I'm going to swap the speakers in the monitor with the better quality externals and leave the system sounds and others the internal on-board card and direct streaming audio etc to the second PCI card to see if I can isolate the problem. 73 Roger G6CKR
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