hey everyone, I have been trying to reproduce some of Ableton Arpegiator functions and got stuck with the key transpose section, not sure about what value to multiply the key by to find the same key as in the screenshot posted.

when observed on the spectro freq I see that the root which is 64.midicps (E4) goes to C#6 which is 85.midicps

when divided 85.midicps/64.midicps I get 3.3635856610149

after the key goes to A7 (105.midicps) but when I divide

105.midicps/85.midicps I get 3.1748021039364

and after it goes to F9# (126.midicps)

and once divided 126.midicps/105.midicps I get back the 3.3635856610149

is there a built in function to get theses intervals correct?

thanks a lot