Re: [LAU] Synchronization of audio with MIDI file

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To: <linux-audio-user@...>
Date: Monday, October 7, 2013 - 9:11 pm

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that is a good find and maybe answers a thread from earlier today
"software communication with acoustic instruments"

there were some discussions about this recently in our project studio:
making a linux application, configured with an idealized MIDI drum
score, that listens via MIDI to electronic drums (or acoustic kit with
triggers) and tries to calculate the "real-time" tempo based on the
incoming drum notes - and then updating jack transport with fine-grained
tempo changes - in theory then any jack transport-aware looper or
sequencer could play along with the band

but we never got beyond the "talk over beers" stage and were unsure if
it would work: how would sequencers react to continuous tempo changes?
on a deeper level: how hard is the calculation of tempo when you have an
"ideal" score vs noisy MIDI data coming from the drums? I see now that
IRCAM have spent decades researching the "score following" problem:

http://repmus.ircam.fr/antescofo/videos#score-following-history-in-video

(also I notice their sample human player is not a drunk rock and roll
drummer... and thus that part might be a bit "idealized" as well..)

so we would also be curious about experience with this or other similar
software. it also would be interesting if there's any open-source code
that could be "borrowed" for a jack-centric system as described above..

On 10/07/2013 02:34 PM, Angel de Vicente wrote:

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that is a good find and maybe answers a thread from earlier today
"software communication with acoustic instruments"

there were some discussions about this recently in our project
studio: making a linux application, configured with an idealized
MIDI drum score, that listens via MIDI to electronic drums (or
acoustic kit with triggers) and tries to calculate the "real-time"
tempo based on the incoming drum notes - and then updating jack
transport with fine-grained tempo changes - in theory then any
jack transport-aware looper or sequencer could play along with the
band

but we never got beyond the "talk over beers" stage and
were unsure if it would work: how would sequencers react to
continuous tempo changes? on a deeper level: how hard is the
calculation of tempo when you have an "ideal" score vs noisy MIDI
data coming from the drums? I see now that IRCAM have spent
decades researching the "score following" problem:

http://repmus.ircam.fr/antescofo/videos#score-following-history-in-video

(also I notice their sample human player is not a drunk rock and
roll drummer... and thus that part might be a bit "idealized" as
well..)

so we would also be curious about experience with this or other
similar software. it also would be interesting if there's any
open-source code that could be "borrowed" for a jack-centric
system as described above..

On 10/07/2013 02:34 PM, Angel de Vicente wrote:

Hi,

I started this thread long ago, and until now I have just used a variety
of tools to manually do this.

But recently I have discovered this gem:
http://repmus.ircam.fr/antescofo

In theory it listens to the audio as you play and it automatically plays
the MIDI (or other) stuff following your tempo. Just what I wanted.

Before I go the route of installing, converting my MIDI files to the
Antescofo syntax, etc. is there anyone here who has tried it and who can
let me know (on or off the list) about his/her experience with it?

Thanks a lot,

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Messages in current thread:
[LAU] Synchronization of audio with MIDI file, Angel de Vicente, (Fri Jun 14, 8:33 am)
Re: [LAU] Synchronization of audio with MIDI file, Brett McCoy, (Fri Jun 14, 1:30 pm)
Re: [LAU] Synchronization of audio with MIDI file, Angel de Vicente, (Fri Jun 14, 10:06 pm)
Re: [LAU] Synchronization of audio with MIDI file, Brett McCoy, (Fri Jun 14, 10:15 pm)
Re: [LAU] Synchronization of audio with MIDI file, Angel de Vicente, (Fri Jun 14, 11:09 pm)
Re: [LAU] Synchronization of audio with MIDI file, Angel de Vicente, (Fri Jun 14, 6:29 pm)
Re: [LAU] Synchronization of audio with MIDI file, Brett McCoy, (Fri Jun 14, 6:33 pm)
Re: [LAU] Synchronization of audio with MIDI file, Rui Nuno Capela, (Fri Jun 14, 3:26 pm)
Re: [LAU] Synchronization of audio with MIDI file, Asa Marco, (Fri Jun 14, 2:00 pm)
Re: [LAU] Synchronization of audio with MIDI file, Asa Marco, (Sat Jun 15, 8:46 am)
Re: [LAU] Synchronization of audio with MIDI file, Asa Marco, (Sun Jun 16, 8:57 am)
Re: [LAU] Synchronization of audio with MIDI file, Angel de Vicente, (Mon Oct 7, 8:34 pm)
Re: [LAU] Synchronization of audio with MIDI file, Studio Channing, (Mon Oct 7, 9:11 pm)
Re: [LAU] Synchronization of audio with MIDI file, Angel de Vicente, (Tue Oct 8, 8:41 am)
Re: [LAU] Synchronization of audio with MIDI file, Chris Bannister, (Sun Jun 16, 3:58 pm)
Re: [LAU] Synchronization of audio with MIDI file, Ralf Mardorf, (Fri Jun 14, 6:11 pm)
Re: [LAU] Synchronization of audio with MIDI file, Brett McCoy, (Fri Jun 14, 6:31 pm)
Re: [LAU] Synchronization of audio with MIDI file, Ralf Mardorf, (Fri Jun 14, 6:14 pm)
Re: [LAU] Synchronization of audio with MIDI file, Brett McCoy, (Fri Jun 14, 6:32 pm)
Re: [LAU] Synchronization of audio with MIDI file, Ralf Mardorf, (Sat Jun 15, 2:55 am)
Re: [LAU] Synchronization of audio with MIDI file, Nils Gey, (Fri Jun 14, 1:49 pm)
Re: [LAU] Synchronization of audio with MIDI file, Angel de Vicente, (Fri Jun 14, 6:32 pm)