Tracking Generators

Mike Metlay ++ Atomic City atomic at
Sun Jan 28 05:52:57 CET 1996

Rich Holmes writes--
>Well, Mike's explanation left me confused as to exactly what the
>nature of the tracking generator's transformation is.  E.g. apparently
>you can use it to convert, say, a linearly rising control signal to
>one that's flat for a while, then rises steeply.  But what would it
>do, if similarly configured, to a falling signal?  A flat one?  If I
>understand your interpretation, it's that it multiplies the control
>signal by another one which is continuous and piecewise linear.  Is
>that what you (Ric) had in mind, and is that what you (Mike) were

No. You've gotten confused because I didn't label my axes on those
little graphs I drew. Neither one is a time dimension at all. The X
direction is "applied signal into the tracking generator" and the Y is
"Output signal from the tracking generator." It's a remapping of a
coordinate into a more complicated form, that's all. If you rise from
0 to MAX, the tracking generator's output will be seen as what you
read from left to right on my graphics. If it's a falling signal, read
the graph from right to left. For an oscillating signal, start at the
left, go to the right, reverse and go back again. See?

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