In response to the different cables for audio/CV-
Why do you have separate interconnection schemes for control voltages and audio signals?
There are several reasons for maintaining this distinction:
The wires required are specialized in purpose. Signal wires must be shielded, while control voltage connections need no shielding. We chose to employ 1/8" plugs for their compactness and banana plugs for their stackability.
Modules can be optimized for performance in their domain of destiny. As a simple example, the parameters that characterize a good mixer are dissimilar to those that make a good control voltage summer. There are definite compromises made in the design of modules that serve both functions.
The interconnections are different. Signals work best with exponential input pots, low output impedances and lots of headroom. Control voltages work best with bidirectional input multipliers, asymmetric output impedances, and no headroom. By choosing yet a different scheme for conveying timing information, a single pulse connection can carry both sustain and transient information, and have both inputs and outputs indefinitely paralleled.
It is a simple matter to provide both sorts of inputs to those parameters that make sensible use of signal as well as control voltages. For example, our oscillators use both f.m. inputs (with exponential attenuators) and control voltage inputs (with linear, bidirectional, multiplying c.v. inputs).
Thereās the matter of deciphering the intent and action of a patch. When the signal paths are easily differentiated from the structural aspects, such decoding is immensely simplified.
With microcomputers serving to store patches, the differentiation is essential. Audio signals stay in the signal domain, while control voltages are digitized and stored as parts of presets.