MOTM

Alright, from the Mate_Stubb and Paul I've managed to get a pretty 
good understanding of where I'm going.  Mate was on the money with 
pointing out how important the frequency of the original wave was.  
(side note... CURSE MY "Digitally Controlled Analog" SYNTH with 
its "zipper" effect when i sweep the filter!)  I've uploaded some MP3 
files (I know, I know, esp. at 128kbps the sounds get massacred) that 
are the effect I'm looking for.  Also, there's something interesting 
going on in thses files, perhaps there's a noise source as well, or a 
second filter, maybe bandpass?  Any suggestions as to how this sound 
was generated would be helpfull.  This is one of the files that had 
sparked this interest in the harmonic tracking in the first place, 
although I've heard better examples of it in other places.

http://www.overand.com/motm

There are two files, one's a short snippet that gets to the point of 
the harmonic emphasis jumping around, and the other one is the full 
sample.

[I *think* that this file came from a sample CD called "Trance 
Formation"  Since (if my memory serves me right)  this is copyrighted 
material, I'd appreciate it if you wouldn't abuse the copyright.  
I'll take the files offline within 2 days or so.]

You can really hear the effect within the first few seconds of the 
file.  Sorry for the obvious processing on the file, but it came that 
way.  <grin>

I'm done apologizing for posting.  If you've got a problem with me 
posting too much, just let me know, k?

-Geoff

Having never heard of a variable voltage divider...  I propose a new 
500 series module....

The uVD!  Doepfer had one, here's some info on it....
http://www.innovativemusic.com.au/Products/Dopfer/Modules_A163.htm

I'd have to hear it, though.  ::grins::

--- In motm@y..., jwbarlow@a... wrote:
> Another thing to try for this effect is to use a vco (tuned fairly 
high -- 
> like mid kHz) to drive a vc divider. Use the output of the divider 
as your 
> audio, and sweep the divider from one to 16 (or 32) to sweep 
through 
> increasingly lower harmonics -- an lfo or eg is good for this.
> 
> What's that? You don't have a vc divider?
> 
> When I do this, I often use two vcos (one to FM the other) to get a 
very rich 
> harmonic background to sweep across. If you use the vcfs to pick 
off 
> harmonics, remember to use a harmonically rich waveform (like a saw 
or square 
> -- or some rich FM) so you have something to hear when the filter 
peak passes 

> a harmonic.
> 
> Good luck!
> JB

sucrosemusic wrote:

> 
> The uVD!  Doepfer had one, here's some info on it....

Can we use uPenicillin to get rid of it? <grin>

Scott

Just heard your MP3 examples... On top of my suggestion to use a S&H, add a
little slew! Otherwise you're going to get very obvious stepping.

> The uVD!  Doepfer had one, here's some info on it....
> http://www.innovativemusic.com.au/Products/Dopfer/Module
> s_A163.htm 

Doepfer? Pfui! 

JH.