Memory Man or similar

[List, Chris]

> >I haven't actually tried them myself, so this is pure speculation.
Anyone...?

I've done the Panasonic MN3005 thing - works nicely, but -  yes, it is
noisy. I didn't do any companding or anything, and my usage is a little
noisier than most on account of I have a bunch of extra circuitry in the
signal path - that being a summing op-amp, a SSM2024 vca stage for
cv-able feedback and another 2024 vca stage for cv-able x-fade of clean
/ delayed signal. Complete voltage control of all parameters of the
delay were my main motivation for building it...

I made it highly overdrive-able - just for the heck of it - for both the
inputs and the feedback. High feedback quickly degenerates into a wash
of ugly noise. But popping it up that high on the attack with an ADSR is
fun for making drums go splat-splat. Now that I think about it, I
should've used a multiplier rather than a normal VCA for the feedback
cv-control so that I could have gone from inverted to non-inverted
feedback with a voltage sweep...

I also made it so that the VCO that drives the delay could go outside
the spec'ed range of the chip. This doesn't do anything at the fast end
(i.e. short delay - min. time is about 20ms.). At the slow end (long
delay) it starts making gurgly garbly sounds. This might be kinda cool,
but the biggest problem I have in general with it is the sound of the
clock at longer delay times coming through the LP filter on the output.
I could make the LP filter voltage controlled, or run it through another
filter for long delay times - or have a manual switch between two fixed
filters - but I'm just not motivated to build that into it. Max delay
time is about... ? I forget ? check the data sheet, my usable max delay
time, before the sound of the clock gets really annoying is ...I think
150ms... I forget - I've got a spot that I set the knob to that sounds
about right for most of the tempos I work in (or rather "play in"). I
really like the short delay with high feedback sound, and the effect of
a long delay BEFORE the final vca in the signal chain is also
interesting and fun.

- There should be postings from me in the archives relating some of my
building experiences. I built it back in July or August.

- Chris