EXS 24 Logic Sampler Users Group

On Dec 19, 2006, at 7:00 PM, David Pelletier wrote:

> Message posted by David Pelletier <studiopelletier@...>:
>
> Hi. I am the banleader and bassist of Cirque du Soleil's Alegria.  
> We are
> using Logic Pro on stage with mainly the EXS24.
>
> On my station (Powermac G5 Dual 2 GHz, 4 GB ram (8 X 512MB), OS  
> 10.3.9,
> Logic Pro 6.4.3, M-Audio Firewire 410, driver 1.5), I use the EXS24  
> to trig
> long audio files that we call "sequences" with a Roland PK-5 bass  
> pedal. In
> many cases these audio files are layered and use different outputs via
> groups/AUX, and vary from a few seconds to up to 7 minutes,  
> depending on the
> songs.
>
> The whole show is loaded in one Logic song. I have about 15 EXS24  
> loaded, so
> 15 tracks in the arrange. Activity Monitor reports that about 2.2  
> GB are
> used on the 4 GB available. No virtual memory (streaming) is used.
>
> This system has worked flawlessly for 692 shows to this date (which
> represents about two years of shows). But in the past 3 weeks I've  
> had 3
> glitches (in about 30 shows), more like stuttering in fact. Audio  
> drops out
> in the middle of the file playback, stutters a bit, and comes back  
> on as if
> nothing happened, but when it happens I have to stop and retrig,  
> because the
> time goes off. So it's really a stuttering and not just a sound  
> drop out.
> Glitches are random, never in the same file playback.
>
> I have 2 theories, one being the audio interface acting up (but that
> wouldn't explain the stuttering i think), and the other would be  
> ram slowly
> going bad (but then i would likely get a kernel panic...)
>
> Any ideas? It's very hard to trouble shoot this one...


actually your issue maybe be related to hard drive fragmentation.  
even though os x is "supposed to" do some low level defraging. try  
tech tool pro, but make sure you back everything up first

good luck

val