[sdiy] Saw vs Triangle Sync

[Magnus Danielson]

David G. Dixon wrote:
> Now that I've got some Sawcore VCOs to compare with my old Tricore VCOs,
> I've noticed that the biggest difference is in how the two behave under hard
> sync'ing.
> 
> In a Sawcore VCO, the saw integrator is reset to ground at odd times.  This
> leads to piecewise discontinuities in the derived triangle and sine waves.
> This imposes a "saw-like" sound on these waves, with lots of harmonics.
> 
> In a Tricore VCO, the triangle direction changes at odd times.  This leads
> to triangle and sine waves with no discontinuities, and hence, few added
> harmonics.  In other words, the triangle and sine waves retain their "siney"
> flavour even when sync'ed.
> 
> I have to confess that I much prefer the sync behaviour of the Tricore VCO.
> 
> Just something to consider when trying to decide which kind of VCO to
> use/build/buy.  Having both kinds is probably the best option.

Oh, then you really *MUST* read the article(s) relating the EM&M 
Spectrum. It uses the CEM chips, but hacks the sync and has two 
different sync modes, and a knob for soft-to-hard-sync tweaking.

Cheers,
Magnus