RBJ says: > are you making wavetables, Frank?? is that what you're doing?
Well yes. More specifically, I'm adding Wavetable SYNTHESIS to my long-standing software synthesizer. It's been generating waveforms the patch-writer specifies by formula, and/or by setting individual harmonics, and the like, for years. It takes a portion of a second to do for a single wave. I generate several bandwidth-limited versions (by default 1/4 octave apart). Some call the resulting data structure a mipmap, some call it a wavetable, but the salient point is that there's only one spectrum (at least, at any given pitch range). The problem is that now I'd doing it for say 32 or 64 or 256 waveforms at once it can take a full second on a fast modern CPU. So, the simple symmetry-based solution I had before isn't really fit for purpose. To all: thanks for all the pointers. I'm not a maths/acoustics guy, just a humble software developer, but I'll work through all the references and see how much I understand.
_______________________________________________ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
