I couldn't resist commenting ont his, but will keep it very brief.Jack Spider wrote:A polite 'intervention' - if anyone is planning on hijacking this into another argument about:
a) What constitutes a DCO .....
My biggest gripe about ppl's perceptions of DCOs is when they refer to them as "digitally controlled analog oscillators" when most of them are nothing of the sort. The only DCO design that can make that claim are Dave Smith's DCO design, as used in the Evolver series and the Prophet 08. All of the classic 80s DCOs like in the Junos, JXs, Matrix 6/6R/1000, Crumar Bit series, Akai AX80, etc. are not analog at all except for the waveshaping. The core is digital (the pulse train that creates the initial square wave). The common 80s DCO should be referred to as a "hybrid oscillator" it's neither digital nor analog, but a melting pot of both technologies.
The way to tell the difference is if the oscillation is caused by the conventional charge/discharge of capacitors (VCO and Dave Smith DCO) versus a square wave created by a digital counter.
Was that brief?