[sdiy] Build a Tape Flanger?

[jhaible at t-online.de]

> One thing I forgot to mention about the method I talked 
> about that makes the 
> tape flange so "heavy" compared to digital means, is that 
> when the finger is 
> removed, the tape snaps back up to speed but really 
> overshoots the mark and 
> comes back. This wavy jitter makes for a pitch change 
> *up* from the original 
> for the time the deck takes to settle in sync. So the 
> flanged deck goes back 
> and forth in relative time (since both decks are delaying 
> from real time, 
> the slowed deck bounces forward of the other while 
> settling). 

This is what Eventide tried to emulate with the "Bounce"
knob on their Instant Flanger. I have used this feature in my
"Storm Tide" flanger as well (practically unchanged) and
I like it a lot.

http://home.debitel.net/user/jhaible/jh_storm_tide_flanger.html
(Look for Point 5., "Bounce") and see the circuit here:
http://home.debitel.net/user/jhaible/jh_storm_tide_1.pdf

JH.