On Thu, 2010-07-15 at 00:46 +0200, [email protected] wrote: > On Wed, Jul 14, 2010 at 11:54:35PM +0200, Ralf Mardorf wrote: > > > I could record audio for kick, snare, hi hat and bass one after the > > other and mix it to one rhythm group and additionally I could record all > > instruments at the same time and send the recordings to you and you > > could do the same by yourself. > > That is not a valid test. If the soft instrument that generates > these sounds aligns MIDI events to Jack periods, and you are using > a period size of 1024 as you say you are, it proves nothing at all. > > Apart from that, it remains to be seen if *real* timing errors of > +/- 2 ms do 'destroy the groove'. To test this, make the same > recording > > - without jitter, > - with 1 ms jitter, > - with 2 ms jitter, > - with 3 ms jitter. > > and check if listeners are able to identify which is which, > or at least to put them into order.
I know very gifted musicians who do like me and they always 'preach' that I should stop using modern computers and I don't know much averaged people. So the listeners in my flat for sure would be able to hear even failure that I'm unable to hear. > What you have been doing so far is compare an 'exact' version > with one that has some unkown and uncontrolled errors. You could > 'prove' anything you want in that way. > > You are just jumping to conclusions and making gratituous > generalisations. > > > Ciao, No doubt about it, I'm speculating. Earlier I send somebody an email off-list (see below), anyway, even when playing live by using ALSA MIDI just thru, there is latency, with or without jitter, but off course without negative delay ;). My speculations might be wrong. But there are audible issues and I'm sure that even non-musicians are able to hear it, unfortunately I'm some kind of freak, all the people I could ask to listen to this issues are highly gifted musicians, unfortunately the averaged German soccer, radio prime time, heavy rotation, music listening audience is beyond the people that I know. Anyway. this crowd shouldn't be the benchmark for good music. Am I wrong? I don't no what's bad, but something is absolutely bad for hw MIDI. -------- Forwarded Message -------- From: Ralf Mardorf To: [snip] Subject: [off-list] Date: Thu, 15 Jul 2010 00:22:17 +0200 ASAP, I guess later today (here it's 00:15 o'clock), I'll run jackd, resp. the alsa driver with 4096frames/period at 44.1KHz and record the external synth to the left and the virtual synth to the right channel. This should give a clear result, regarding to the 'event happened, before it was triggert' issue. I guess even for quantum physics such phenomena are caused because of technical issues. :D Cheers! Ralf _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/listinfo/linux-audio-dev
