Thu Jan 13 19:17:15 EST 2011

Analog calibration

It seems clear that going for full digital calibration gives up on
some nice modulation abilities, unless external control signals are
routed through an equally compensated gain/offset circuit.

What is the cost offset here?  One of the following

  - Analog one-time calibration (trimpots / component matching)
  - Digital trimpots
  - Analog multipliers for external controls

It seems expensive.  Looks like it's an either/or: stick with
classical manual calibration, or do it digitally but loose analog CV

So I reached the same conclusion as [1].  That's two votes for
simplicity and grit.

[1] entry://20110110-183121