[PD] file access audio glitches

Phil Stone pkstone at ucdavis.edu
Sun Oct 14 02:44:57 CEST 2007

Roman Haefeli wrote:
> On Sat, 2007-10-13 at 17:06 -0700, Phil Stone wrote:
>> Phil Stone wrote:
>>> Does anybody know if ram disks are possible on OS X?
>> To answer my own question about OS X ram disks (GIYF), yes it seem to be 
>> possible (though not especially well documented).  Since most of my 
>> files are pretty small, this might help.
>> Phil
> why do you need a ram disk? wouldn't it be sufficient to just read all
> necessary files in advance? they will be automatically in ram then...
> roman

Do you mean because of disk caching?  If not, then it seems fairly 
complicated to create a whole new all-file-loader/memory structure for 
each type of file.*  The beauty of a ram disk is that it the file 
addressing is exactly the same.  In fact, I just now set one up in a few 
minutes, and it works wonderfully.  I can change sssad presets, or 
[tunetof] tunings, with nary a glitch.  Of course, it won't work for 
files big enough to take more than one dsp block to load from ram -- 
that's a big limitation.

* I imagine this working by pre-loading everything in a given directory 
(or listed in another file, maybe).  Storing, then accessing and copying 
that information live doesn't seem trivial, to me at least.


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