Oscillator hard sync?

[natekrell]

Am a missing something here? Has anyone built an analog-subtractive type, with oscillator sync? How do you do it?

Here's what I'm working on. EVERYthing else works! Can you see how Sync would round this out nicely?

[slikmanp]

The built in oscillators don't do sync. I ended up building my own based around the counter reset module. To get the reset time use the formula 1/frequency. I ended up implementing a way of switching the reset time to 0 for a very short amount of time to get the counter to restart on cue. It's probably not the best solution but it works. The only problem is that the tuning is sometimes a bit off. Not sure yet why this happens.

[natekrell]

Counter reset module? Sorry... what?

[slikmanp]

Sorry. I goofed with the name. I think it's called the Timer Reset. You can find it under the Misc category. It starts counting when you trigger then resets to 0 and starts again, and again when it reaches a determinable value. If you plug the period length of a frequency as the reset value it will ramp up and reset at the rate of the frequency.

EG. if you were to set the reset value to 0.01 sec then you would get a ramp with a frequency of 100Hz.

The last bit of the process is to convert the output of timer to a +/-1 by first dividing it by the period length, subtracting 0.5 from that and then multiplying the result by 2.

Like I said. This may not be the best solution but it works reasonably well as far as I can tell.

[natekrell]

Sweet! Thank you!

Will let you know how it works!
-n