KVR Audio

degras · Post by **degras** » Sat Mar 30, 2019 3:37 pm

Hi,

I was looking at the FFT code for the sweet sounding PAD synth at:

http://zynaddsubfx.sourceforge.net/doc/ ... ementation

However I was wondering what the numbers mean on lines 119-121 of padsynthc.c, i.e. 600, 150 and 900 etc?

Thanks,
Daniel

Skupje · Post by **Skupje** » Sat Mar 30, 2019 4:59 pm

"without too much investigation" Base frequency "hopsize" and coresponding harmonics,

degras · Post by **degras** » Mon Apr 01, 2019 8:31 pm

Thanks for the info. So I'm guessing that means it would be "600Hz + the base frequency"?

Actually the 150 is used to divide the frequency after the 600 is subtracted.

Skupje · Post by **Skupje** » Mon Apr 01, 2019 9:41 pm

I don't see the number 600?
But "bw_Hz=(pow(2.0,bw/1200.0)-1.0)*f*nh;"

is ((2^(bw/1200))-1)*f*nh

degras · Post by **degras** » Mon Apr 08, 2019 7:45 pm

OK, I did quote some line numbers.

What do the numbers mean in the PAD synth FFT code?