[sdiy] One man's dross...

[Scott Stites]

is another man's treasure.

> than the constant rehashing of old dross, such as the difference between
> the 4016 and 4066.
>
> Here is an informative page on AS: http://www.udel.edu/bkirby/asperger/
> Can't we be a bit more tolerant of those less fortunate than ourselves?

Apparently not.  My apologies for asking a question relating to parts
selection for my synthesizer on a list called 'Synth DIY'.  What could I
have been thinking?

Should I have checked the archives first?  Yes, and I'll be absolutely sure
to do so next time to avoid reading something that makes me feel like the
bottom feeder I truly am.

But (this is the on-topic part) the answers to my question were truly
helpful to the tasks I had on hand - I found that for my application, the
4016 is the part I want.  And today, the kind folks who answered my question
helped me avoid another problem I may have had should I indeed have used the
4030 over the 4070, which was my original intention.  Instead of futzing
around with 'what is wrong with this chip?', etc., I was able to try
something I've always wanted to try in a very short and enjoyable time:

I used each gate of a 40106 to derive 6 oscillators  in order to create a
pitched noise source, much like Ken Stone uses in the Cynare project, only I
used RC values from the Thomas Henry Distortion Cookbook.  I mixed the
outputs together, and additionally coupled the outputs into the 4070 (not
the 4030, *thanks to the list*) for digital ring modulation.  I also
combined the lowest and highest frequencies from the 40106 into the 'left
over' EXOR gate.  I mixed the outputs together to get a very convincing
'gong' type noise output, but I didn't stop there.

I then took six cheap (though not preferred) VTL5C2's, ran them in parallel
with the timing resistors, and controlled the resistance of the Vactrols
with a simple linear sink (running out of breadboard space at this time),
allowing voltage control of the oscillators in tandem.  I then used the
modified Random Fluctuating Voltage circuit (in which the 4016 is used) to
control the frequency of the oscillators (as well as the triggering of an EG
controlling the filter), ran that through my 2040 filter, VCA and PT2399
delay and came up with the creepiest space sound I've ever produced.  Not
everyone's cup of tea, but it was pure Oolong to me.

And that's what I did with my Saturday.  Thanks to the list, it was much
more enjoyable than it potentially could have been.  No spiral waveforms,
though =-/

Cheers,
Scott