[PD] chronometer + metronome that syncs multiple Android/iOS devices over network?
enrike
altern2 at gmail.com
Wed Mar 6 10:25:24 CET 2019
thanks to everyone for the answers. this looks interesting and I will
start exploring here. Ableton link seems like another option too
19/3/6 04:13(e)an, Chris McCormick igorleak idatzi zuen:
> Hello Enrike,
>
> On 6/3/19 12:18 am, enrike wrote:
>> We need a chronometer that runs in sync in multiple devices at the
>> same time.
>
> SyncJams might work for you:
>
> https://github.com/chr15m/SyncJams
>
> The algorithm it uses is tolerant of adverse network conditions. All
> devices run their own internal clock and the clocks converge on a
> consensus "current tick".
>
> The algorithm is very simple: every device broadcasts its current tick
> over the network. If a device receives a tick which is higher & earlier
> than it expected it immediately resets its own clock to that new timing.
>
> What this means in practice is the smallest (i.e. best) point-to-point
> ping time between any two participating patches is the closest that the
> clocks will get in sync. On a WiFi LAN this is generally on the order of
> 1 to 3 milliseconds which is close enough for most musical applications.
> In my experience devices converge on that value quite quickly after
> joining the network.
>
> Here's a video of Chris Rice aggressively changing the BPM from which
> the devices manage to recover after a second or two:
>
> https://www.youtube.com/watch?v=yNvD-KQhR9k
>
> Here are two Android devices syncing:
>
> https://www.youtube.com/watch?v=Z5tlEZwttBM
>
> I've been planning to revisit the project to simplify it and port to
> Supercollider etc. for some time but who knows if I'll ever get around
> to that.
>
> Cheers,
>
> Chris.
>
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