[sdiy] Waveform phases and hard sync, sawtooth vs. triangle?

[Tom Wiltshire]

> On 22 Jun 2018, at 23:24, Mattias Rickardsson <mr at analogue.org> wrote:
> 
> 
> The sync-behaviour in the CEM3340 
> simply switches the load/unload "direction" of the VCO-core. So it does 
> not(!) do a reset, like the hard sync does in a saw core VCO.

…and that’s why hardly anyone ever used the default datasheet “sync” circuit. Instead, pretty much all the commercial synth manufacturers went for the circuit that mimics the typical ramp-core VCO reset sync, "Figure 5" which appears on page 6 of the datasheet. Curtis clearly thought that their version was more interesting and did something new, but actually most people wanted the sync sound they already knew and loved.

https://electricdruid.net/cem3340-vco-voltage-controlled-oscillator-designs/

T.