[sdiy] all analog FM synthesis?

[Johannes Öberg]

You know all available "FM"-synths (like the DX-series) uses Phase
Modulation and not Frequency Modulation, right? I know little about
VCO construction, but Phase Modulation the way it's done in the DX
synths (which is really a modulated sinetable scanning routine) must
be terribly difficult to implement in analog technology!

They sound quite different; FM tends to sound like disharmonic and
"bad" wierd FX sounds, while PM sounds like electric pianos and
metal-hit-with-a-stick-harps.

A relative to PM, sound wise at least to my ears, is synced FM. Read
all about it at www.clavia.se/nordmodular/Modularzone/Softsync.html
(the latter half of the article). That should be easier to get to
sound good from in the analog domain.

I don't have the skills to develop an analog FM synth, but I would be
intressted in building one. I always loved the sound of FM!

/Johannes