On Tue, 21 Aug 2007 16:55:03 -0700 Bob van der Poel <bob@xxxxxxxxxxxx> wrote: > > > Nick Copeland wrote: > > Hm, my reply to munging got damaged there! > > > > Kurzweil developed a box to do this, I think as a project after selling > > his company to Young Chang. It was just such a PLL that would sync to > > the drummer so that the massively overproduced garange bands could play > > their music live, something that was impossible without miming the > > whole act. Basically the drummer would lead the tempo (some are > > notoriously bad at following a set tempo anyway), from that the software > > would derive a MIDI time code and away it went to drive the sequencers. > > > > I remember, a long time ago, playing an Electrohome home organ which > varied the beat box tempo by following the timing the player used on the > pedalboard. I was young at the time (in the 60s) and I'm not sure how > well/badly it worked. But, I do remember the owner boasting about it :) Sorry it's taken a while to get back to you, I've been on holiday. I'm still trying to cope with the concept of a sunny August Bank Holiday in Yorkshire! I did some work on PLLs at RF mmmfty mmmf years ago and seem to remember that they are only really effective if there is a large difference between the controlled signal and the rate of change, which I wouldn't have thought would be true in this case. This actually, isn't really what I'm after anyway. I want to do what is potentially much simpler, I want to manage a completed MIDI recording rather than working on-the-fly. I would imagine something like: Create a table of all the user-supplied reference notes. Extrapolate further reference notes. Calculate a best-fit curve. Use curve to adjust all events (not just note on/off) on all channels for even timing. Sounds simple doesn't it :) ... bet it's not! -- Will J Godfrey http://www.musically.me.uk _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user
