- May 16, 2007
- 3,395
- 4,869
- Disclosures
- Volunteer developer/beta tester with Source Audio, Morningstar Engineering & MORTRIX
Actually the LFO is not a sine, it is a triangle. When the sum of the LFO signal + the offset reaches the upper limit of the arithmetic, then you would expect a saturation, as on your second drawing. But this is not the case (just as on most of all computer applications, except some special signal processing chips), after reaching the upper limit the arithmetic folds over from the highest number into the lowest. Therefore, first you have an always thinner positive pulse, then for a very short moment the pulse disappears, and after that it appears again but with opposite polarity. This is the reason of the loud click in the transition.
Andras Szalay
I was hearing
That makes sense. I am hearing two clicks though. The pulse width narrows to zero, clicks, widens a little bit again then immediately narrows to zero and clicks a second time. After the second click, the pulse width then fully widens to the level set in the offset. This behaviour repeats, where the pulse width does this quick double disappearing at the peak of the the LFO. Is that expected behaviour or would you only expect one click?Actually the LFO is not a sine, it is a triangle. When the sum of the LFO signal + the offset reaches the upper limit of the arithmetic, then you would expect a saturation, as on your second drawing. But this is not the case (just as on most of all computer applications, except some special signal processing chips), after reaching the upper limit the arithmetic folds over from the highest number into the lowest. Therefore, first you have an always thinner positive pulse, then for a very short moment the pulse disappears, and after that it appears again but with opposite polarity. This is the reason of the loud click in the transition.
Andras Szalay