thanks for the reply Pieter. after sending you the message i realised how stupid i waws regarding jack. i was thinking that the latency had to be low so that the live output wouldn't be too delayed, but completely forgot the whole point of the 'input mix' part :P you are of course right - i can set a high buffer in jack for any recording and to just have the device streaming, but the input mix should still be virtually 0 latency. i need someone to smack me in the head :) on a side note, i have in the past had trouble getting the input mix to output anything (i could only get outputs from the pc channels, not input mix), but i don't have the ability to test it right now so i will assume i was just doing something else silly. porl ps. what does the 'mixing/tracking' toggle do? i couldn't notice any difference last time i checked. pps. looking forward to getting a chance to test the new low latency of ffado! :) 2008/9/25 Pieter Palmers <pieterp@xxxxxxx>: > porl sheean wrote: >> >> a while ago i purchased a focusrite saffire pro 26io. it has finally >> come to a point where it is quite reliably useful as an interface for >> jack/ardour (the latency isn't brilliant, but i'm pretty sure that is >> the fault of my firewire chipset). > > I fixed latency for ffado yesterday, and at least one person reports 3x32 as > working for him. So if you have a good firewire chipset, you will also be > able to achieve this. But maybe wait for beta7. > >> >> i found out recently that unfortunately, in order to get teh device >> working as a basic 'summing mixer' for live work (i wanted to >> essentially use it as a basic 8 in 1 out preamp to send to a small >> desk at a venue) it needs to be set in 'streaming mode'. i can get >> this working by starting jack and just leaving that running, but i was >> wondering if anyone knew of an easier way (maybe one of ffado's >> command line utilities? there seem to be a lot in there and i don't >> know what half of them do). if not, would it be difficult to write a >> small app that basically just 'turns on streaming'? or should i just >> keep using jack? (i am hesitant to do this as i have still had a few >> issues with dropouts, and as you can imagine at a live performance >> this could be a problem). > > The fact that streaming has to be turned on is a design decision of > Focusrite. We can't change that. > > I don't see why you wouldn't use jack. What's the point in using a separate > application that basically does the same? Just run jack with a large period > size, and you should be fine. Something along the lines of: > > jackd -R -d firewire -p2048 -n4 > > should work fine. I've done multi-hour recordings with the pro26 at 3x1024 > without any problem whatsoever. > > Greets, > > Pieter > > PS: Most of the command line tools in the ffado repository are test or debug > tools. > _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
