Adding a semi-tone transposition option to the organelle system menu?

[jordo]

I’m trying to add a semi-tone transposition option to my organelle. I would like this setting to work for any patch loaded including orac, or at least most patches that are keyboard-based synth patches.

Can anyone give me advice or help me do this?

[chrisk]

How could you go microtonal?

this is actually pretty simple within the organelle pure data patches both midi and the organelle keyboard notes key converted to a send called notes , which are received with [r notes] so this note is a midi note, so notionally its an integer, but it is interpreted as a float, a fraction - so 60.5 is valid - this is then usually converted to a frequency using [mtof] so: a) there is a mapping from a fractional note to the frequency often by mtof b) fractional notes are fine t…

[jordo]

hmm… I’m not really a coder so I don’t quite understand.
I don’t want to do microtonal stuff, I just want to add a setting to the menu that transposes the notes of the keyboard by semitone so that I can for instance have the note f be the c note of the keyboard to change it’s range or even change it by -12 or +12 to change octaves.