Ok, I understand, but what are the frames? and subframes? Is it just the amount of delta time per second (opposed to delta time per quarter notes)? And if so, what are the subframes for, why isn't it enough to just have frames?
Thanks, Maarten On 11/08/06, stephane richard <[EMAIL PROTECTED]> wrote:
Quantization....Basically your PPQN (Pulse Per Quarter Note) plays a role here. imagine this timeline: !---!---!---!---!---!---!---!---!---!---!---!---!---!---! For the sake of this example, the ! are the Pulse per quarter notes. say you have a note that falls here: !---!---!-*-!---!---!---!---!---!---!---!---!---!---!---! Basically, you couldn't play that note at that time because it's between your PPQN resolution. It would bring it either !---!---*---!---!---!---!---!---!---!---!---!---!---!---! or !---!---!---*---!---!---!---!---!---!---!---!---!---!---! Depending on the deltatime (rounding so to speak to define it it should go on the PPQN before or after the location of the note. This basically depends on the PPQN of the software you're making, and also the PPQN of the MIDI gear you'd play it on...until recently (say before 4 years ago or so), most hardware sequencers did a good job at 96 PPQN. But with the more demanding music complexity, that PPQN became unreliable. SO they upped it. for a sound card, doesn't really make a difference...but if the user of your program has a hardware sequencer, it will be a good idea to set the software's PPQN to match the resolution of that sequencer so you're playing with the same resolution. HOpe this clarifies :-). ----- Original Message ----- From: "Maarten de Vries" <[EMAIL PROTECTED]> To: "REALbasic NUG" <[email protected]> Sent: Friday, August 11, 2006 10:30 AM Subject: Re: MIDI type 1 > Ok, I get the division and the tempo event now.. partially... The division > is just the amount of delta time in one quarter note. Then, with the tempo > event you know how long a quarter note should be. The standerd appears to > be > 0,5 seconds. But what if the last bit of the division is set. Then it's > suddenly "frames" per second and "subframes". What do they mean? > > Thanks, > Maarten > > > On 10/08/06, Maarten de Vries <[EMAIL PROTECTED]> wrote: >> >> I'll read it.. Thanks >> >> Maarten >> >> >> On 10/08/06, stephane richard <[EMAIL PROTECTED]> wrote: >> > >> > I think you'll find your answer in the "timing and formulas" section of >> > my >> > article: >> > http://www.petesqbsite.com/sections/express/issue20/#midiprogramming3 >> >> > _______________________________________________ > Unsubscribe or switch delivery mode: > <http://www.realsoftware.com/support/listmanager/> > > Search the archives of this list here: > <http://support.realsoftware.com/listarchives/lists.html> > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.405 / Virus Database: 268.10.9/416 - Release Date: 8/10/2006 > > _______________________________________________ Unsubscribe or switch delivery mode: <http://www.realsoftware.com/support/listmanager/> Search the archives of this list here: <http://support.realsoftware.com/listarchives/lists.html>
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