The JACK IO delay values are all or nothing. You cannot have a separate delay for some channels on a multichannel device, which is what it sounds like you're trying to do.
However, if you run the signal through a strip in Non Mixer with the LADSPA "artificial latency plugin" on it with the correct value entered, you may be able to get the compensation you want. No software can reach outside the computer and guess what's going on in your studio wiring... On Sat, Jan 2, 2016 at 1:42 PM, PJ Aileanach <[email protected]> wrote: > I just did some tests trying this, with JACK set up to account for the I/O > delay. I can confirm this is working with jack_delay after the adjustment. > > I tested 2 aligned snares tracks in non timeline (Playback Latency > Compensation enabled), one going straight to non mixer and then playback, > the other first going to bypassed outboard gear, then playback. The two are > out of sync unfortunately. > > On Sat, Jan 2, 2016 at 8:58 PM, J. Liles <[email protected]> wrote: > >> If you manually use the jack latency tools to measure and inform JACK of >> the input and output latency of your outboard gear (with the -I and -O >> options), then Non Timeline will use this information when calculating its >> adjustment. >> >> Latency compensation isn't magic. It is basically a lot of complicated >> bookkeeping resulting in a value for an offset to the playback (the reverse >> of a delay) of individual tracks in the timeline. It will only work >> properly if all of the information that goes into this calculation is >> accurate. Sometimes plugins lie about their actual latency, and so you may >> have to compensate for things like that. It is very complicated in practice >> and I can't tell you if a given situation would work without knowing all >> the specifics. >> >> >> >> >> >> On Sat, Jan 2, 2016 at 12:49 PM, PJ Aileanach <[email protected]> >> wrote: >> >>> Thank you for the quick reply. When you say compatible signal routing, >>> what does that mean? Does this only refer to software latency compensation? >>> Or is there a way that it would work when including outboard gear in a set >>> up? >>> >>> On Sat, Jan 2, 2016 at 8:43 PM, J. Liles <[email protected]> wrote: >>> >>>> Non Timeline and Non Mixer work together to perform latency >>>> compensation (when you enable the Playback Latency Compensation option in >>>> Non Timeline). >>>> >>>> There are limitations to the way this works, though, and it depends on >>>> having a compatible signal routing in JACK. For corner cases, there is a >>>> ladspa plugin that sets a fake latency value to allow you to trim that and >>>> of course there are plenty of delay plugins too. >>>> >>>> >>>> On Sat, Jan 2, 2016 at 11:54 AM, PJ Aileanach <[email protected]> >>>> wrote: >>>> >>>>> I've recently been learning how to use the Non suite of software and >>>>> i'm very close to being 100% satisfied for my purposes. The last piece of >>>>> the puzzle is latency compensation. I don't believe that Non itself has >>>>> any >>>>> way of working with this itself (?) but maybe someone knows of a LADSPA >>>>> plugin, or other hack, that will allow me to achieve this. I use some >>>>> outboard gear and this is my reason for needing this. Anyone have any >>>>> suggestions? >>>>> >>>>> Cheers, >>>>> PJ >>>>> >>>> >>>> >>> >> >
