Re: [JACK] Can tempo be synced between hosts?

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 On Sat, Feb 20, 2021 at 4:09 AM Francesco Napoleoni wrote:
> I'll try to explain myself better: the "master machine" is a PC with a
> soundcard, running JACK on a Linux Fedora OS, and is connected with
> the "slaves" with a gigabit ethernet link. The "slaves" are currently
> two, but I would like to expand this to a wider configuration, maybe
> with devices such as Raspberry sharing the load of multiple synths,
> effects and so on.
>
> The problem is that I can see the start/stop of the Jack transport
> synced between the hosts, but not the tempo. This limits the use of
> applications which do make use of tempo changes on slave hosts,
> forcing me to copy the tempo map to them and run it in a DAW. As a
> side effect I can see the BBT drifting between hosts (apparently its
> value is computed using the local tempo mark).
>
> Is there a way to solve this problem? Or am I missing something?

Forgive me if I am having a brain fart (and please understand that I am
still just learning the ropes with audio on Linux), but why not:

- have your primary machine send suitable MIDI signals (note on/off, CC,
  patch change, etc; MIDI beat clock if you really need it; MIDI Song
  Position Pointer if you really need it) to your synths or samplers
  wherever they are, to get them to produce the right audio at the right
  moment?

- And then send this audio to your (software or hardware) mixer by the
  most convenient means available to you that has acceptably low latency
  and acceptably high sound quality?

Sam

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