[sdiy] ASM-1 VCO section update

[Tom May]

Magnus Danielson <cfmd at swipnet.se> writes:

> Dear fellow Synth-DIYian,
> 
> I've just uploaded an updated ASM-1 description where I tries to
> describe in some greater detail what is happening in there in the
> VCO. Not everything is being described in detail just yeat, but I'd
> like some feedback of how you perceive the road I am testing out, if
> you like the style of the description etc.

There's a note there that says:

   The sync input should be feed with a pulse wave and not a sawtooth
   wave in order to operate properly. So, for propper sync operation,
   do not feed it sawtooth (or other non-pulse waveforms)!

If you use a pulse, one edge of the pulse will cause a sync and the
other edge will cause a delay in the reset if the VCO was about to be
reset.  I found this noticeable and objectionable when the frequency
of the VCO being synced was swept -- it would "catch" briefly when the
frequency hit multiples of the other VCO's frequency.  Syncing from a
sawtooth of the proper polarity might prevent this.

fTom.