[sdiy] Flanger???

[Happy Harry]

Well as u know I am not a 'friend' of the BBD
(Bucket Brigade Delay) but I wouls check out
Juergen Haible's clone of the Eventide Flanger
"Storm Tide Flanger"... it is probably as good
of a circuit as you will ever find.

A LOT of BBD based circuits suffer from pretty
poor noise performance. (read... 'extremely poor')

Phasing and Flanging are really different. In
Phasing, the notches are not harmonic related...
in Flanging they are. Phasing is usually done with
all-pass filter designs... Flanging is done with
delay lines.

I'd look for some old Delta-Lab Effectrons (for cheap)
if you want flanging.  If you have two delay lines...
you can set one for a fixed, short delay (maybe 1ms) and
vary the other one... allowing through-zero flanging
(a VERY cool effect)

H^) harry


>From: Peter Grenader <petergrenader at mksound.com>
>To: Nihil Chimeraea <nihil at torgoth.com>, <synth-diy at dropmix.xs4all.nl>
>Subject: [sdiy] Flanger???
>Date: Wed, 22 May 2002 21:42:59 -0600
>
>Guys,
>
>After finding that the Analog System's Comb Filter was sort of a bust in as
>far as flanging,  I have been looking around for one and had a crazy idea
>just to modify a store bought guitar pedal with a VC input or two.
>
>Then, I found this circuit on John Hollis' site:
>
>http://www.hollis.co.uk/john/ultraflanger3.jpg
>
>You will see there an LFO on the bottom left which is generating the sweep,
>and figured this is the place to plop in the VC input.
>
>Does anyone have any experience with this particular circuit, or could any
>of you recommend another circuit which would do the job?
>
>A clarification on Analog System's Comb FIlter:  I am not meaning to spam
>one of my fav synth builders, not at all.  Their multi=mode filters are one
>of the sweetest out there. Their Comb Filter did not give the effects I was
>after in flanging or phasing, that's all.  It kind of is an auto Adrian
>Belew generator, as anything going into it tends to sound like Ade coming
>out.  This isn't a bad thing, it just didn't do what I wished, so I swaped
>it for a Doepfer phasor. Am still in need to that all powerful flange
>however.
>
>Let me know and thanks,
>
>Peter
>
>




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