http://www.thumbuki.com/TheCsoundBlog/add_synth_upgrade_comment.csd

It plays through once without additional body shaping, and then again once with table 302. The single 1 represents the only peak. I’ve also bumped up the number of bands in the saw to 100.

The body filter/transfer function is currently fixed. The bowed string-like sound is more or less created by 2048 points of micro peaks and dips. I’m still experimenting with the curve of the body transfer function, but let’s keep it simple and pretend it’s linear. Any oscillator with a frequency of 11025, will access the middle value of the body transfer function. It would not matter if that particular tone is the fundamental, or the 112th harmonic, it will still be multiplied by that middle value. The end result is very much like running audio through a subtractive fixed filter bank.

The saw sound source in today’s csd only uses 32 bands, so that I may render in real-time. A small tweak the the line “i $GEN_Saw 0 1 500 32″ could turn that 32 into 320. At which point, the lower notes will have more harmonics than the high ones. There is currently an arbitrary cutoff so that if the frequency of the current tone is greater than 16000, the next would-be recursed tone is not spawned.

Does this address you curiosity? Am I making sense? This is the first time I’m explaining it, so my answer may not yet be fit for human consumption. :) If not, let me know and I’ll refine my answer.