[PD] quacktrip - jacktrip (low-latency audio) from behind home routers

Ed Kelly morph_2016 at yahoo.co.uk
Mon Oct 19 14:48:55 CEST 2020


Hey list,
I've been using quacktrip in live online performances with Simon Limbrick (percussion) - it's much easier to use than jacktrip and very effective, although I can confirm there are occasional dropouts - considering we are in completely different parts of the UK this is pretty unremarkable. It's advisable to increase blocksize and FIFO length, perhaps even checking the 2x button.
You can hear some of our work here:https://www.youtube.com/watch?v=9GDMUag4Q_E&ab_channel=PaulSimonLimbrick

Cheers,Ed

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For Lone Shark releases, Pure Data software and published Research, go to http://sharktracks.co.uk  

    On Sunday, 18 October 2020, 15:07:40 BST, Edwin van der Heide <pd at evdh.net> wrote:  
 
 Hi Miller,

I’ve started playing around with quacktrip 0.91 today and am having a lot of fun!

I have been interconnecting a Macbook Pro 2009 and a Macbook Pro 2016, both on the same local network, but one using a VPN connection from the Netherlands to Latvia (and back) to simulate a bit of distance.

Two observations:
- Sometimes a glitch occurs without the dropout counter increasing. I’m not sure if this occurs because a package is missing and the counter is not updated, or that the package is there and something else goes wrong. 
- The number boxes are updated at a fast rate and that takes a bit of CPU. The audio networking itself is actually not very cpu intensive.

I could imagine two additions:
- option to choose between 16 and 24 bit quality
- create the possibility to send audio in one direction only instead of always in both directions.

Cheers!

Edwin

p.s. should I assume that foo.ucsd.edu is usually up or would you recommend to run my own server?


> On 2 Jun 2020, at 18:46, Miller Puckette via Pd-list <pd-list at lists.iem.at> wrote:
> 
> To Pd list -
> 
> This is very preliminary, but some of you might be interested in this.  I've
> been working for the last month or two on making an easy-ti-use implementation
> of jacktrip to allow people stuck at home to play music together.  A test
> version of this is available on msp.ucsd.edu/tools/quacktrip .
> 
> The jacktrip implementation is based on the one in TPM by Roman Haefeli and
> Johannes Schuett (sorry for the no-diacritical spelling).
> 
> It's been tried out by 4 or 5 people so far, seems to work with some
> hiccups.  I'll be getting back to work on it after Pd 0.51-0 gets finalized.
> 
> cheers
> Miller
> 
> 
> 
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