The Warp Macro

Hi! I was looking at the 1-pole static HP in the Core Cell/Eq/Static Filter folder but I didn't understand what the Warp Macro does... Please can anyone explain to me what it exactly does and what it's used for?

Thanks
Antonio

 

WARP-Macro ? yes it's from REAKTOR SEVEN ;-)
It's the wrap macro which is used mainly in oscillators to wrap the increment values back to -1 (sometimes -0.5) to start again the cycle of the wave. In programming language it is like: "add the same value until you reach the maximum and go back to the minimum to start adding again and again." The wrap macro sets the memory back to minimum.

ciao herw

 

it warps ( distorts ) the mapping of the frequency for a more accurate behaviour towards higher frequencies, or, put another way, it undistorts the distortion of the frequency range that is introduced by squeezing an infinite range to the range limited by the sampling rate : the lower the frequency, ( compared to sample rate ) the more the mapping is 1:1 to continous signal processing, and the closer to sample/2 rate the more it's off, so you unsqueeze the range ( strech it ) in the vicinity of nyquist frequency

@Herw : you are confusing something here

 

Actually, the warp macro fro oscillators and the "warpF" commonly found in filters do two different things.

Herw describes the warp (though just to be perfectly clear, it does not set the output to min when it goes over max, it sets the output to: output - (max - min) ...which help accumulate rounding differences between the sample rate and the osc. frequency).

I do not know exactly what the WarpF in filters does, it's some sort of scaling of the filter frequency to account for the sample rate when computing the coefficients for the filter math. If you don't understand filter math, I doubt you'll be able to understand what Warp is doing! I stand corrected --- thanks to lxint for the straightforward explanation!

I personally don't understand that stuff at all.

Gif of the WarpF is attached.

Cheers,
C

 

yes sorry - i confused warpF in filters with wrap macro in oscillators.

It's late here and i drunk a little bit of red wine.

 

I dont either, honestly

the problem with dsp related stuff is that its always obfuscated with a lot of fuzz
I just go about things like a shaman, developing my view on things step by step, never timidated by things I dont understand thoroughly ( since the limit of knowledge is beyond the horizon, anyways) - I guess I could explain most of the things I "know" to you within a couple of hours
what's really lacking is a "dsp for the layman/musician" type of book,
and whats also lacking is some sort of community progress in this regards here, but I am getting off topic ...

@ Herw : we are Germans, we're supposed to drink beer, not wine

 

"unsqueeze" is my new technical word for the day.

 

is there any hope then for the rest of us.......?

i was going to point out the other place a warp macro sits, in the pitch shifter. it takes the triangle output and scales it to -.5 to .5. it's a cool little macro to study........