Subject: ASR (was: possible micro module?)
Cc: <motm@yahoogroups.com>
At 1:09 AM -0600 02/01/02, J. Larry Hendry wrote:
>
> I am still a modular use idiot. Someone explain to me how you
>would use something like this. The term analog shift register is
>not even in my pea-brained modular vocabulary. Thanks, Larry (who
>spends >too much time working on stuff instead of playing with it)
Then you'll be able to excuse my half-assed description :)
You know how a BBD delays audio by passing along a sampled voltage with
each pulse of clock?? Well, afaik, an analogue shift register is like a
BBD but with a separate output for each bucket.
For example, let's say there is an ASR with three stages, three outputs, a
clock input, and a changing voltage at the voltage input (let's say an LFO
run through a quantizer).
CLOCK IN
CV IN
CV A OUT
CV B OUT
CV C OUT
When the clock pulses, the input voltage is sampled and held at output A,
the voltage previously held at output A is handed over to output B, the
voltage previously held at output B is handed over to output C, and the
voltage previously held at output C is lost as it's replaced by B. So if
you have each output (A, B, and C) controlling three VCO's in a row, each
plays the note played by the previous VCO.
If you want to go for Baroque, you can play a melody on a monophonic
keyboard or single-channel sequencer, with the voltage going the ASR's CV
input and the trigger/gate going into the clock input. With each VCO tuned
to a different interval (perhaps with a JH-822 :) it will play the
transposed melody one note later. Notice that you can modulate the key of
each voice by changing the offset voltage. Also, if the input to the ASR
is noise, the random sequence will repeat while maintaining the musical
relationship between the VCO's, or could be repeated by a different patch.
You can also ignore one of the outputs so it plays the VCO two notes later,
use it as a delayed sample and hold, or use it to control the input to
three LFO's clocking three sequencers, etc.