24 Nov
2015
24 Nov
'15
4:27 p.m.
On Tue, 24 Nov 2015 09:53:40 -0500
Paul Davis <paul(a)linuxaudiosystems.com> wrote:
In Monty's video he *specifically* talked about
how this
representation of digital samples is wrong and has confused so many
people.
This may be naive, but I thought it did not apply because in
Audacity, at that zoom in level, it really does not look like a
staircase at all, here for an acoustic solo guitar waveform. Even
though the lines between points are straight, they are following
curves. See attached. So I thought his staircase was a gross
representation that did not apply.
The connecting straight line segment is an illusion
and does not
exist. You are getting confused in the same way that Monty discussed.
I will say that I don't that he did a very good
job of explaining
this part though. Sampled waveforms should never be drawn as
"staircases", but should be pointillistic. However to understand how
this works, you need to understand how the reconstruction filter
works in a digital to analog converter, and he didn't really describe
this, and most people don't know it either.
I was wondering about this. In extremely simple terms I think that
capacitors smooth out curves.
