/diy/ - Do It Yourself

omg, what kind of a shitty lookup table is this, lads? i noticed the first point doesnt start with zero, and i have no idea why. i stole it from some arduino library. even if i use their largest 8k table, i clearly hear some beats and just overall horrible noise. checked the spectrum in audacity and got this. added linear interpolation and it made no difference, since the freq is 108Hz and this is a 8kb table sampled at 44100, so it is pretty accurate even with a fractional phasor step so nothing to interpolate. I am going to build my own lookup table tomorrow since it is trivial and I don't know why I even bothered with theirs but it is just weird that it looks so bad. Maybe it is intended to be used in a different way.