[sdiy] Sampler mode...

[Jim Palmer]

there were some lengthy discussions about this on loopers-delight a few
years back.  it might be worth checking out the archives...

note that adjusting to zero-crossings alone will not eliminate clicks,
even making sure they are rising edges.  this depends on program material.
maybe it's because a sudden change in frequency content is perceived as
a click.  this is easily demonstrated by using audio editing software.

another issue with adjusting the loop length to reach zero-crossings is that
over time the accumulated timing error results in audible loss of sync
(if you are playing along with a drum machine for example).
this may be less important for your usage...

anyways, the echoplex digital pro uses cross-fade which sounds fine and
works very nicely...


> That wouldn't help because then the click would just happen 1 sample 
> later.  What is needed is for a smooth transition of sample level at all 
> times.  For start point a simple fade in is fine, but for looping it's 
> definitely better to do it at zero-crossings.
> 
> Seb