a question on FM
Are there any FM boffins in here?
it's not strictly a max question but if i wanted to emulate a HPF then an LPF with FM how might i do it?
Im after a sound that starts sort of as noise then becomes a hpf saw sweeping down to a full saw then reducing the partials to just a few at the bottom, like a LPF
If there was a way of also adding a prominent 7th note without playing it in that would be a bonus
thanks
Hi
Not an FM boffin myself (though they do appear here: https://cycling74.com/forums/carrier-and-harmonicity-in-fm-synthesis). And the following remarks are subjective, as I don't have Max in front of me to test/verify; so, "noise" of a sort in FM can be quickly achieved (in a 2-op algorithm) with a high and irrational mod ratio (31.73 for example) if your carrier is low (< 100Hz), and a ridiculous mod index (> 80, eg). Self-modulating modulators are easily driven into noise too, with less extreme settings. To generate a saw, you want to sweep down to a lower and more rational mod ratio and a sensible index (
HTH
Brendan
And a seventh is just an octave 2:1, take away a second 9:8 (I think) . . .
Brendan thank you!
totally missed these replies, this is great, thanks!