Re: : Netjack : like a charm :)

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2008/12/10 <torbenh@xxxxxx>
On Wed, Dec 10, 2008 at 08:16:29AM +0100, Mysth-R wrote:
> * I would like to test the --celt option. But I can't understand what the "N
> bytes per period" option are.

it tells celt to compress one period of data to N bytes.
i use -c32 for internet connections generally. sounds ok.
if you can cope with lower quality lower it and add more channels.

be careful to not max out the link, because this will give you netxruns.
using celt you will only hear a lot of them, but they degrade the
quality.

> * It seems that xruns on the master computer made some desynchronizations.

oh... right this can happen.
i need to think about how i can fix this.


> * On seq24, on the slave computer, I had to configure the option with "Jack
> Transport" AND "Master JACK" ... a bit disapointing... We lost so much time
> finding this very logical configuration.

sorry, i was not really clear about this.
netjack only synchronizes the frame count. not the tempo information.
So you need a Transport Master on both ends.

The problem is that the slave transport is basically running in the
future to compensate for the latency of the network link.

I cant know of tempo changes ahead of time. So its mostly
impossible, to add N frames, to beats:bars information.
Tempo changes would at least become flakey.
Ok but If tempo on the master is 120 and tempo on the Slave is also 120, should it be ok ? Would it be always synchronized after hours and hours of rolling ?
Because for our needs, we don't want to change tempo while Jack is rolling. Just fixe it at the begining and be sur that it will not be desynchronized after 1 or 2 hours.Can you confirm this ?
 

> * So the problem was seq24 on the slave machine was running at this own
> tempo. If the master use 120BPM and the Slave 110, they are not
> synchronized. But if you put 120 on both, it seems to be synchronized...
> Well I think there is a bug in seq24 or something. I didn't try with other
> softwares. But I have some doubt about the real tempo synchronization.

as stated, it only synchronizes the framecount.
netjack2 seems to do complete tempo synchronisation, but i dont know
if its latency compensated. and i also had somebody reporting,
that it just fails with an assert triggered.

>
> Thank you very much for this great apps that change our lives :)

no problem.
just spread the word. i still have the feeling, not many
people are using it :S
Yes of course ! In fact, I think not so many people are knowing the existence of this software. And perhaps those who know about it are a bit scared, ... like me at the begining... Because in my mind I though about too much difficulties ... how does it works ? is it easy to implement to use it ? In fact it was a bit obscur for me. But now I can affirm that it is very very easy to use it. I think I will post a bit of documentation on LinuxMao, the french Linux website.

while there is obviously much use for it.
Is it possible to have more than one slave ? One master and several slave trough local network or internet ?
By the way thank you for your precision about celt. It is not so clear in your website.
Cheers,
Mysth-R
 

--
torben Hohn
http://galan.sourceforge.net -- The graphical Audio language
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