EXS 24 Logic Sampler Users Group

Sascha Franck wrote: 

>
> Allright, quite some time ago I made some patches, almost converting the EXS
> into some sort of standard VA synth. The principle was to use a lot of
> layers, all using keymapped samples of simple waveforms (sine, triangle, saw
> etc.), then select the samples by the slider only (instead of using velocity
> as a source). In short, I tried to replace the usual OSC(s) waveform
> selection by layers using appropriate samples.


Apart from the CPU consumption problems you mention,  the EXS24 produces a lot
of aliasing when it is pitch shifting. So, unless you have one sample per
semitone at any velocity level (ie no pitch shifting),  it is going to end up
sounding worse than a lot of your VA source material. 

More recent VA synths use anti-aliasing techniques - eg Pentagon 1 and Z3ta+
have band limited oscillators - they sound much clearer than the early VA
synths like the Model E and the original Pro 5 because of the low levels of
aliasing noise.

I made a stack of synth sample based instruments a few years ago for the EXS24
using all the hardware samples I could get my hands on -  I never use them
these days because they are just too muddy sounding due to the accumulation of
aliasing noise. I would like to convert them all to SFZ format someday and hear
what they sound like without the aliasing. 

One solution would be for the EXS24 to have more levels of interpolation
quality like SFZ - or even a high quality render mode for bouncing.

Regards,
Murray