aceslowman

I need a value to increment or decrement for a certain number of samples in gen, which brought me to creating my own sawtooth, using Floating Points answer in here:

https://cycling74.com/forums/seamlessly-reversing-a-signal/

Which is working well in gen, but it will unpredictably switch directions. I have a feeling it has something to do with the additive accumulator, or just some gen quirks I've never dealt with before. I've also tried resetting the accumulator at 0, but that didn't seem to help. Could anyone help explain, or point me towards a new solution? I wanted phasor to work... but I couldn't find an elegant way myself of reversing the signal when the input parameter is negative.

I need a value to increment or decrement for a certain number of samples in gen, which brought me to creating my own sawtooth, using  Floating Points answer in here: 

Which is working well in gen, but it will unpredictably switch directions. I have a feeling it has something to do with the additive accumulator, or just some gen quirks I've never dealt with before. I've also tried resetting the accumulator at 0, but that didn't seem to help. Could anyone help explain, or point me towards a new solution? I wanted phasor to work... but I couldn't find an elegant way myself of reversing the signal when the input parameter is negative.


sawtooth-wave-is-reversing-unpredictably-gen

I'm not sure I can follow everything that your patcher is trying to do, but I bet the problem is that you want Euclidean modulo, which [wrap] will give you, rather than the truncated modulo that [%] gives you (the problem is how it handles negative numbers). Or more simply, just use [+= @max 1], which also does Euclidean wrapping. See 

https://en.wikipedia.org/wiki/Modulo_operation

I'm not sure I can follow everything that your patcher is trying to do, but I bet the problem is that you want Euclidean modulo, which [wrap] will give you, rather than the truncated modulo that [%] gives you (the problem is how it handles negative numbers). Or more simply, just use [+= @max 1], which also does Euclidean wrapping. See https://en.wikipedia.org/wiki/Modulo_operation

Great, thank you a lot, that is exactly the kind of thing that I know nothing about. Since I want to the ramp to go from the original value, to the destination value, I put the second parameter of wrap to match the range of increment/decrement, and had to get the absolute value of the inc/dec. Is this looking good? Will I have any efficiency issues with this solution?

sawtooth wave is reversing unpredictably (gen)