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| JH. "Son of Storm
Some years ago, I've built the "Storm Tide Flanger", which
was much inspired by a certain vintage Flanger, as a one-off box for
Here is a PCB project for a Flanger that uses different BBD
chips, isn't that close to the vintage original circuit-wise, and has a
number of features that I have developed myself, or which have their
origin in other vintage FX devices.
Here's a picture how a front panel for the new Flanger could look
like (This is behind which I'll build my own prototype):
And here's a glimpse of the PCB layout:
Inside The Prototype
(A lot of wires - but you decide which features you want
to implement, and wht potentiometers and switches to omit! I can
imagine this would make a nice stomp box with just a pedal for the
"Manual" pot, plus the "Bounce" function, alone ...)
1st Audio Demo
(first few seconds dry, then Flanger) - CS50 -> Flanger ->
some Echo and Reverb
SOST Flanger on Drums - Korg
Electribe S -> SOST -> tiny bit of Reverb
Karplus-Strong Experiment 1 (first dry,
then with Flanger)
Karplus-Strong Experiment 2 (first dry,
then with Flanger)
Experiment with Wavefolder and
Flanger: Self-Oscillations of all kind
Page 1: Clock Generator
Page 2: LFO, SampleHold and Envelope Follower
Page 3: Compander
Page 4: Delay
Page 5: All Pass Filters and PSU
Page 6: Audio Connections (correction: Resonance on/off is drawn
wrong: switching to GND is the OFF position, of course!)
Page 7: CV Connections
of Materials (on-board components only)
Calibration Notes (I'm
aware this is no step-by-step calibration procedure, just a few hints
how to do it - you will do the fine tuning by ear.)
Set it for just getting self oscillation, or just barely getting self
oscillation, according to your taste.
Set for symmetrical clipping in the BBD stage, if there is any clipping
Set as high as possible, without the signal getting weak.
Something around 30kHz.
Start with mid position and adjust to taste.
Mid position will do. that trimmer slightly alters the step response of
the filter, but won't do much on the sound.