[sdiy] Hammond Vibrato Scanner

[David Brown]

I made some measurements of my scanner with my scope and posted them 
on my site.  Note that this doesn't reflect a specific Hammond organ 
since I'm only using one half of an H series delay line.  I never 
really understood the chorus effect before.  I always thought it was 
a different set of connections as opposed to changing the termination 
of the delay line to increase reflections. Interesting.

I also figured out the noise in the sample was an artifact of my mp3 
encoding. I've tried different encoders and finally got a sample that 
is pretty clean.  I also tried sourcing different waveforms into the 
scanner.  It makes a neat little mini-arpeggiator if you leave a few 
sections unconnected.

Updated information on the site.
http://modularsynthesis.com/modules/DJB-scanner/scanner.htm

Dave

 > From: David Brown davebr at earthlink.net,
 > Subject: [sdiy] Hammond Vibrato Scanner
 > Date: Mon, 31 Dec 2007 22:25:58 -0800
 >
 > I've always wondered what a Hammond vibrato scanner would be like
 > interfaced to a modular synth. I rebuilt a spare B-3 scanner and
 > "jury rigged" it up today. The sample has some noise in it but does
 > make a nice vibrato. I'm thinking of trying it with various
 > waveforms instead of just the delay line taps.
 >
 > Any else on this list tried anything with a vibrato scanner?
 >
 > Dave