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Re: Echoplexes and Choo-Choo Trains


Do you know how *&%$%$#@ brilliant you are.  That NextLoop metaphor was 
useful in helping me (a non-EDP user) understand some of the things you 
EDP people
discuss.  It is no small talent to be able to describe such events in 

Kim Flint wrote:

> At 7:53 PM -0700 5/16/98, Randy Jones wrote:
> >Hi All,
> >
> >Kim, I love this train metaphor. It made a lot of things clear for me.
> >Could you put NEXT LOOP in this metaphor for me. Will anything else fit?
> >
> >thanks,
> >
> >Randy Jones
> hmmm, not the sort of Engineering I set out to do......
> All Aboard!
> (sorry....)
> If you missed this bit before, here's the train saga so far:
> >> The feedback level is applied after the loop audio output, and
> >> before the loop audio is mixed back into delay line, so a given bit of
> >> audio still has to wait 20 seconds before it is heard again with the
> >> feedback setting applied. The feedback structure looks a little bit
> >> like this crude ascii drawing:
> >>
> >>
> >>                                  _________
> >>                   ______________|feedback |__________
> >>                   |             | level   |          |
> >>                   |             |---------|          |
> >>                   |                                  |
> >>  input => ------>(x)--->|=========================|------> output
> >>                                delay line
> >>
> >>
> >>
> >> the idea of cycles and loops (were a cycle is a subset of the loop) is
> >> another sort of abstraction, and I'm not even very sure how best to
> >> put it into the picture above. This is dumb, but maybe it works:
> >>
> >> Think of the path above as a train track that goes around in a 
>circle. Your
> >> loop would then be the train following the track, with the front end 
>of the
> >> train just reaching the back. Each cycle would be a car in the train. 
> >> a multiply or insert adds cars to the train and makes the track 
>longer to
> >> let it fit. Now, if a given car (cycle) is at the feedback level 
> >> when you adjust the feedback, it still has to go all the way around 
> >> whole track to get to the output.
> ok, NextLoop rides the rails:
> If a single loop is like a circular train track, then multiple loops are
> like several circular train tracks lying next to each other. Each can 
> a train on it, but only one of the trains gets to go at a time. Only that
> one has the input and output tracks connected to it. The audio riding on
> the train gets on and off there.
> When you press NextLoop, the train we are on stops and just sits there, 
> a the train on one of the other tracks starts up. The tracks to the input
> and output loading docks get connected to the new track.
> If there is no train on the next track yet, you press Record to build a 
> track and put a train on it. This train starts off with one car (a 
> one, I guess). Using multiply and Insert adds new cars, as previously 
> If you have Switch Quantize on and you press NextLoop, the guy who 
> the track switching waits until the car currently at the output dock gets
> completely past it before throwing the switch.
> If you do a loop copy, the audio on the current train gets a transfer to 
> to the new train. It gets off the first train in orderly fashion and gets
> onto the new train, along with any new audio passengers. Actually, it
> doesn't get off the first train. A mad scientist has a lab under the
> transfer station where he runs a secret cloning operation, so it's an
> identical copy bording the new train and the original has to stay on the
> old train.
> If you do a time copy, the audio doesn't get to transfer, but the guys 
> build the new train and track make sure to use cars that are the same 
> as the previous train.
> If this helped you, well, at least something is....:-)
> Somebody else can figure out where midi clock fits into all this.
> kim
> ______________________________________________________________________
> Kim Flint                   | Looper's Delight
> kflint@annihilist.com       | http://www.annihilist.com/loop/loop.html
> http://www.annihilist.com/  | Loopers-Delight-request@annihilist.com