[PD] timing question

Claude Heiland-Allen claudiusmaximus at goto10.org
Mon Dec 17 15:49:28 CET 2007

Derek Holzer wrote:
> Hi all,
> Charles Henry wrote:
>> On Dec 17, 2007 3:03 AM, Frank Barknecht <fbar at footils.org> wrote:
>>> Hallo,
>>> Charles Henry hat gesagt: // Charles Henry wrote:
>>>> [metro 1] creates a bang each millisecond, approximately.  The message
>>>> rate is constrained by the block size, so you would want to put [metro
>>>> 1] inside of a subpatch with [block~ 1] for best time resolution.
>>> That's not true. Message rate is not related to the dsp vector size.
>> My mistake.  I thought messages had to run in between dsp blocks.
> Someone please refresh/adjust my memory... what IS the message rate in 
> PD? I also thought it was related to block size all these years. And how 
> can it be changed if needed?

There is no fixed rate, it's event-based with continuous time (or as 
continuous as floating point numbers gets you).  But - it works with 
"logical" time, any relationship to "real" time is purely a coincidence.


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