Have you tried having one jack server active with the firewire-backend and then adding the other, ALSA-compatible cards via zita-a2j or a similar option? That would only work if you don't need your current "primary" audio card as the actual primary card. And it might be some hassle if your FW-card is not always available or you tend to change your setup frequently. Jannis Am 02.05.21 um 10:38 schrieb Athanasios Silis: > Hi there, > Thank you for the information. Yes synchronisation is always an issue > and perhaps I framed the question inadequately, but what I am after is > not complete synchronisation but rather to utilise the analog ins and > outs of this additional soundcard too. > > So I am not after 0ms latency per se, but rather something in the order > <12msec. This has been possible across soundcards using the alsa driver, > so I assume it is not out of place to aim for it now too. Perhaps this > is not possible across different jack backend which is why I ask for the > various setup possibilities. > > The easiest for me would be to use the saffireLE through the alsa > driver, but that only exposes 1 single stereo playback stream. I want > all 3. So what do I have? > > Thanks, > Nass > > > On Sat, 1 May 2021, 23:07 David Kastrup, <dak@xxxxxxx > <mailto:dak@xxxxxxx>> wrote: > > Athanasios Silis <athanasios.silis@xxxxxxxxx > <mailto:athanasios.silis@xxxxxxxxx>> writes: > > > Finally, is there a chance to coordinate 2 jack sessions (each with > > one of alsa, firewire backends) with 0 latency between them ? In this > > setup does anyone have experience with SaffireLE and how to control > > the mixer? > > How is 0-latency supposed to work with unsynchronised clocks? > > If you want to consolidate multiple soundcards without adding > significant latency for resampling filtering, they must be running on > the same clock (which means that it's mainly comparatively expensive > soundcards that can be consolidated). Even then you'll not be able to > split a stereo channel across two non-identical cards without > introducing problems from the differing phase response of their > oversampling and filtering circuitry. > > Synchronisation can happen in some cases via Firewire (for example, if > you daisychain multiple Alesis i|O 26 devices) but more usually with a > separate word clock sync cable. > > For juggling numerous sources, there can be a point in getting a mixer > with digital multi-channel in- and output. > > That means you don't need to consolidate multiple soundcards but rather > get to work with some flexible multichannel device. That tends to be > quite more robust. > > -- > David Kastrup > > > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > https://lists.linuxaudio.org/listinfo/linux-audio-user > _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user
