From the original SynthMaker forum (2004–2014), with its members’ names and dates.
antialias ·
hi,
was reading in the tutorial forum the recommended way to build a square wave oscillator (BTW nice demonstration, jorge) and i thought that it might be more processor-friendly if there were a poly comparator after a sawtooth so the signal path was out = (sawtooth > (1 - pulsewidth)), where pulsewidth ranges 0-1. my programming skills are underdeveloped, i don't have a logical reason to believe this way would be less expensive than a second oscillator. feels like it might be, though.
now that i think about it, you'd also have to add a poly add and poly multiply because the output would be tween 0&1. still, i think there would be some usefulness in a set of basic signal comparators that output 1 or 0.
-anti
stefan ·
That oscillator would alias quite a bit 🙂 And don't be too sure of that it would be more cpu friendly, because you'd have to do conditional jumps due to the comparison. This cannot be done and still have the same signal path for several channels, which is very important when using SSE (since you can calculate 4 channels of audio at the same cost as one, kinda)
antialias ·
i see about the SSE factor and branching, but i can't visualize why aliasing would be an issue if the comparison is made every sample. i don't expect you to explain it to me, though. i'm pretty inexperienced in DSP.
consider this a retraction of my suggestion
-anti
stefan ·
Ok, well, it would alias a lot, and since you don't want an explanation, just believe me when I say that it would 🙂
Wrote something here? To have a post removed or your name hidden, write to [email protected].
SynthMaker