[sdiy] Oscillator sync schemes

[cheater cheater]

Hey guys,
Just a quick update on this stuff:
I have stumbled onto Ian Fritz's website. Ian, I didn't realize your
'kick sync' worked the way you describe it there. I guess it's yet
another way you can make sync different. It's sort of like 'triangle
core reversing sync' except it doesn't reverse the slope every time a
sync pulse comes in - it instead forces the core into the downward
slope mode (and if the downward slope mode is 'on' already, then
nothing changes after the pulse)
Cool stuff Ian! Can we get some PCBs? :^)

Also notable is the fact that if Ian's design is carefully used then
the slave oscillator can become chaotic and can also generate a
sub-harmonic; as well as the fact that the sync depth can be
controlled here.

Here's the page I'm refering to:
http://home.comcast.net/~ijfritz/sy_cir4.htm

Cheers
D.

On Tue, Aug 18, 2009 at 10:38 AM, cheater cheater<cheater00 at gmail.com> wrote:
> I was considering a similar design of a DCO where the VCO core is only
> fm-synced (so, the 'soft syncing via fm' scheme I described above).
> This should let you do stuff like shaper-based sinusoid oscillators
> and other cool sounds because the point at which the discontinuity
> happens in the oscillator core is still controlled by the good old
> analog circuitry.
>
> D.
>
> On Tue, Aug 18, 2009 at 12:44 AM, Ian Fritz<ijfritz at comcast.net> wrote:
>> At 11:17 AM 8/17/2009, Cynthia Webster wrote:
>>>>
>>>> There is also what I call kick sync, where a series of narrow sync pulses
>>>> produces a folded tri waveform whose phase and waveshape are gradually
>>>> nudged to get in sync with the pulse frequency.  (I'm not sure if this is
>>>> included in the above list, but I don't think so.)
>>>
>>> Might you call this something like, "Burst Sync" because it takes more
>>> than a single pulse?
>>
>> I suppose you could look at it that way.  But of course the sync pulses must
>> be there continuously to maintain the lock.
>>
>>  Ian
>>
>>
>>
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>