On Thu, Sep 15, 2011 at 12:48:39AM +0200, Dominic Sacré wrote: > Hi, > > I have a medium-sized Ardour session with a couple of plugins on most > tracks, in which I'd like to record some additional tracks. Due to the > number of tracks and plugins, it's not possible to run Ardour/JACK at > very low latencies. > > The same machine (and the same sound cards) is also used for monitoring > for the whole band, using a huge instance of JackMix. This needs to be > run with as little latency as possible (128 frames per period, tops). > > How can I solve this dilemma? Ardour's latency doesn't really matter to > me, as long as newly recorded regions are properly aligned with existing > material. > > It might also be an option to run Ardour on a different machine via > netjack, but as far as I can see the period size of a netjack slave is > tied to that of the netjack master. It also seems doubtful that Ardour > would be able to do correct latency compensation in this scenario... > > Any suggestions? Is there any way to run run a second, high-latency JACK > server piggy-back on a low-latency server? If you can't decrease the period size, the the only option is do the monitoring *for the new tracks being recorded* in hardware, using either a 'real' mixer or the one that may be provided by your sound card. If you have RME gear hdspmixer is the solution - this use case is why it exists. If the number of new tracks being recorded simultanuously is not too high you don't need a big mixer: one channel for each 'live' input, and on or two for the mix of existing tracks that you make either in Ardour or using a separate SW mixer. Doing punch-in/out will require some attention, but otherwise things should just work. The really hairy case is a new track created on the PC using a soft synth or similar - this requires a short period for acceptable monitoring. But with external sources there shouln't be a problem. The latest Ardour 2 should take care of latencies - see Paul's post of today. -- FA _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
