Hi David,
On 19/03/21 15:22, David Kastrup wrote:
Lorenzo Sutton <lorenzofsutton@xxxxxxxxx> writes:
- Jamulus [4]: audio-only, realtime online jamming-oriented with
public 'servers', jack-native. This was actually real fun to test
and play with. I tried some close-by servers and jammed a bit in the
central one. With 128 frames set in JACK and using Jamulus' own
direct monitoring latency was definitely acceptable and the audio
quality pretty good. Audio-quality and music-friendliness wise this
is probably the nicest to use. Only thing for a teaching setting is
the public-only servers (the documentation mentions 'private' ones,
but I haven't looked into if this is possible without actually
'hosting' a server),
I could rent one out to you, assuming my cloud provider has some
facility in reasonable vicinity to you.
As a first measure however, you could easily run one yourself on your
own computer (running Jamulus with the -s option runs one on your
computer). This requires punching a port through the firewall in your
Internet router and either phoning your external IP address to the
student (depending on your Internet provider, it may be fairly constant)
or setting the router up to communicate with a DynDNS account giving you
a constant name.
If your computer has enough performance and you connect your own Jamulus
client to "localhost" rather than going through the network, for a
one-on-one session it may work. However, it means that the student
audio goes in and out the student's Internet connection and in and out
your own Internet connection. Using a cloud server has the advantage of
halving the number of home-level routers that the student roundtrip (not
your own one) has to pass through. And the student is less likely to
routinely deal with that latency than you would be after a while.
Of course, this consideration is moot if there is no cloud computing
facility in closer "networking" vicinity than the trip through your
private connection would take. It may also depend on whether you and
your student share the same provider, making it more likely that routing
is able to bypass the central "Internet Highways" that tend to be "near"
the cloud servers.
That all makes sense and thanks for the tips and kind offer... There is
the 'speed of light' factor after all.
Thing is.. _I_ amd the student (blush..) here, so the idea is not to
over-bourden my teacher who is probably already having to cope with
setting-up the calls, schedules etc. :-)
I would be interested to see if I can actually get my band to try this
out since it's months we can't play together live :-(
there is a workaround via soloing or muting others, but I don't think
most teachers (nor students) would feel comfortable with anyone
possibly coming in and listening to the lesson. Also video should be
provided via some other tool and, of course, all parties need to have
the software installed.
You get used to doing without.
That said this software is really well made and fun to use. (aside
note there were a couple of 'troll' events in one of the public
servers, and although they say don't feed the trolls 'audio trolling'
can hurt your ears...
That sounds more like the typical "instructions are just
recommendations" newbie not taking serious the need to use headphones
when working without echo compensation and auto-ducking.
You know, like the only person in the conference call not affected by
echoes after they figured out they could just switch off echo
compensation without having their connection deteriorate.
Let's give them the benefit of doubt... Raise hands who hasnt forgot to
turn the amp down before unplugging a jack, etc. The user in question
did have a somewhat trollish name, but - again - ignoring them did work
eventually :-)
Software:
- Jack
- Zoom H5 shows 4 inputs in jack: the L/R mics and the inputs 1 and 2
Oh, can you just put the headphones right next to the mics (makes
astonishingly little difference in comparison to direct connections) and
use jack_iodelay for measuring out the latency of the H5 with your
settings?
What exactly would you like me to measure? Roundtrip latency of _my own_
signal when using Jamulus, or...?
Numbers are surprisingly hard to come by for any audio interface.
So true...
Lorenzo
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@xxxxxxxxxxxxxxxxxxxx
https://lists.linuxaudio.org/listinfo/linux-audio-user
