[PD] midi syncro

[Miller Puckette]

Well, actually I'm going to try to improve both input and output jitter by
making my own time-tagging mechanism, both for input and output, in user
space.  That way it will work on all the platforms the same way...

cheers
Miller

On Tue, May 15, 2001 at 06:02:29PM -0400, Karl MacMillan wrote:
> On Tue, 15 May 2001, jfm3 wrote:
> 
> > On Sun, 13 May 2001, Miller Puckette wrote:
> >
> > > [...] I can probably
> > > get the timing jitter down to 5msec or so but it'll never be real pro
> > > quality until someone figures out how to use kernel-level time tagging on
> > > MIDI output...
> >
> > Does that mean you need tagged messages from the kernel level drivers, or
> > that you can get tagged messages but you don't know how to use the tags in
> > relation to the rest of Pd?
> >
> > I know there is MidiShare, which works on all the Pd platorms, and does
> > tagging...
> >
> 
> This comment was related to output not input - I think what Miller is
> referring to is using the OSS sequencer to schedule midi events.  I guess
> the idea is to schedule events in the future with the sequencer - this
> would reduce jitter but increase latency.  Also, wouldn't event
> granularity still be limited by at least DACBLKSIZE (somewhere around
> 3msec)?
> 
> Karl
> 
> > (jfm3)
> >
> >
> 
> _____________________________________________________
> | Karl W. MacMillan                                 |
> | Computer Music Department                         |
> | Peabody Institute of the Johns Hopkins University |
> | karlmac at peabody.jhu.edu                           |
> | mambo.peabody.jhu.edu/~karlmac                    |
> -----------------------------------------------------