How do you guys define hypertriangular?

[Chico]

I have been reading some older articles about the advantages of "hypertriangular" waveforms for flangers/phasers.

So to learn more about them, I observed the LFO on my Ross inspired phaser build using an oscilloscope.  The lfo of the original Ross is allegedly "hypertriangular".  

I have not "seen" any other LFO wave shapes that purport to be hypertriangular, so my assesments below are based solely on my particular Ross insired build.

While observing the Ross LFO, I tried to model the wave form that I observed for a new, all digital function generator that I built (based upon an Atmel AVR microcontroller).


At the end of the day, I achieved the closest results by using the function y=x**2 (the equation for a vertial parabola).

I built a 256 sample wavetable based upon the equation for the above parabola, uploaded it into my digital function generator, and voila, to my eyes, it looks pretty spot on to the waveform generated by my Ross inspired build.

So, are parabolic and hypertriangular equivalent lfo waveforms?  Are there alternate interpretations to what a hypertriangular wave looks like?  Anyone know who coined the phrase "hypertriangular" and what the basis was?

I enjoy learning about these issues and welcome comments.

Best regards

[Mark Hammer]

Parabolic and hypertriangular are, to the best of my knowledge, the same thing.