[sdiy] all analog FM synthesis?

[Don Tillman]

   > Date: Sun, 20 Feb 2005 03:02:48 +0100
   > From: =?ISO-8859-1?Q?Johannes_=D6berg?= <johannes.oberg at gmail.com>
   > 
   > You know all available "FM"-synths (like the DX-series) uses
   > Phase Modulation and not Frequency Modulation, right?

True.  Although much original FM work, before the DX-series, used
both Frequency Modulation and Phase Modulation.

   > 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!

I have developed two methods of implementing phase modulation for the
QuadTrapVCO, and I'll be publishing at least one of them in the
future.  I need to prove they work first and characterize them a
little better.  And given my crazy life, that might take a while.

   > 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). 

I can't make any sense of this.  "Mst input"?  "Grey signal"?  "Clavia
units"?  "Constant module"?  "Slv output"?  Can anybody translate this
into regular terminology?

  -- Don

-- 
Don Tillman
Palo Alto, California
don at till.com
http://www.till.com