[sdiy] Chorus unit

Magnus Danielson cfmd at swipnet.se
Mon Feb 12 02:38:00 CET 2001


From: "Paul Maddox" <Paul.Maddox at wavesynth.com>
Subject: [sdiy] Chorus unit
Date: Sun, 11 Feb 2001 10:09:15 -0000

> Dear all,

Paul,

>   Ok I would like a scxhematic for a chorus unit...
> things iy must have ;-
> 
> 1) Voltage controlled (or easy to adapt to)
> 2) High frequency response (20Khz+)
> 3) stereo outputs (you know the left hand is 90deg out of phase with the
> right hand)
> 4) use available parts (BBD's)
> 
> suggestions?

Oh dear... oh dear... you are stepping into a minefield here...

Naturally, Harry is to blow off in the corner about BBDs, others will
object to the DACs while yeat others would argue around the actual
availability of BBDs.

> or should I design my own using a uC ? though Id rather stay away from
> ADC/DAC if possible.

Run with a ADC/DAC solution and then have a FIFO setup (possibly in a
FPGA), modulate with LFOs controling VCOs. Shuffle in some
anti-alaising, and do all this without saying anything to
anyone... just have fun ;)

Cheers,
Magnus




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