[sdiy] Saw vs Triangle Sync

[Jason Proctor]

>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.

the Oakley VCO has centre or edge (labelled tri or saw on some 
panels) sync modes. i'm not sure offhand whether this is the same 
behaviour that you describe...