EXS 24 Logic Sampler Users Group

On Mar 31, 2004, at 10:52 PM, Mark Jones wrote:

> Andrea,
>
> A question for you about AutoSampler.
>
> How will it handle patches with no decay, like leads? Will it truncate 
> at a
> user defined time, or will it try to detect a possible loop point?

Hi Mark,
no looping is done on the sampled waveforms, and there is a very strong 
reason for this which will be evident at the proper time.
You can specify the length of the sustain phase of the sampled note. 
The sound is then still sampled until it decays back to silence.
You can also specify as an option if you want to keep all the tail, or 
cut it at a certain volume level.

>
> Will it do looping and crossfading for decadent patches like pianos? 
> That
> would be killer, because, without it, you could probably fill up a 
> 120Gig
> hard drive with one or two synths.
> For example: A stereo piano sample with a 10 second decay generates a 
> 1.5
> megabyte sample. Three velocity layers is 4.5MB. Sample every key (88) 
> and
> you end up with nearly 400MB of samples! Sample every third key, and 
> its
> down to 132MB, which is still huge. For a synth patch that probably 
> takes
> 1-2MB in the synth's memory.

The 1-2 MB are the raw samples, for sure not a whole new set for each 
key, and for sure not the processed complete stereo sound.
Our tests show that you can obtain convincing instruments with 
reasonably sized sets. For many situations, the sample set is much 
smaller
With this method you will never obtain the storage efficiency of the 
real synth(s), but that's not the point AutoSampler is about.


>
> So let's say we average out to about 50MB per patch. Of course some 
> will be
> much bigger (like drumsets, and .... pianos), but others will be 
> smaller
> (like synth leads, etc,). That means, in order for me to sample my 
> Yamaha
> MOTIF Rack's entire set of 896 patches, I would need to allocate 
> around 44GB
> of memory...

I'm not sure it's legal to sample straight patches out of your motif 
rack. The point is to create new high quality sounds for Exs24 in a 
quick, simple way. The hypothetical 44GB for the around 900 high 
quality sounds you are talking about, would be 44GB of disk space, 
certainly not of ram memory.

>
> With crossfade looping, you could probably get it down under 10-20MB 
> or so
> per patch. Still, even without looping its an excellent idea, and I'll 
> be
> first in line!!!

There will be some downloadable demo instruments next week,  for 
everyone to evaluate the results, as soon as i come back from 
musikmesse.
The full manual will also be available as a free download, after 
release.

>  Existing and very happy EXS Manager customer, btw!

Always glad to hear this Mark.
Thank you for your interest in AutoSampler

Andrea at Redmatica