On 3/14/07, Roman Haefeli reduzierer@yahoo.de wrote:
On Wed, 2007-03-14 at 04:46 -0600, David Powers wrote:
I found those, but are they really band-limited? I'm fairly sure I hear ugly digital artifacts in the saw.
what artifacts? can you elaborate that a bit more?
Hi, listen at exactly 474 hz, and tell me if you think something sound funny to you, I guess... (the oscillators in my example are the same ones in the original example. Sometimes there's table not found errors in PD though).
Oh and fyi I've looked in two dif versions of PD on my hard drive, highest example number is "G.09.pitchshift.pd" ... PD I'm running is 0.39-2 I guess... I think I'm out of town, but thanks for showing me Miller's examples. For whatever reason I did not have the "H" "I" and "J" patches at all in any PD on my PC.
Anyway I guess this is "good enough" for demo purposes, here's my subtractive workshop patch attached. Digital artifacts are VERY noticable though. Of course filtering helps a lot ... though I think [moog~] might have problems of its own. I wish I had time to understand what IEM filter would give something like a nice classic analog low pass ...
I will do a/b in pure data soon, so you can see / hear the oscillator and filter differences I mention. I believe my beloved ASynth uses the minBLEP technique, I don't understand it but I wonder if it can be applied in PD by some more math competent person?
~David