[fluid-dev] Tweaking a sf2 for octave

[Ben Gonzales]

Hi All.

This is not really a FluidSynth issue, but maybe someone can help.

I have the latest FS running on a headless RPi with a soundfont with 
many presets. I plug my EWI into the RPi and the program I have made 
allows me to tweak the transposition and octave via knobs connected to 
the GPIO before the Pi sends the notes to FS. If I want to change other 
parameters (eg reverb, chorus) another part of the program sends 
commands to the running FS.

The issue is that I'd like to automatically adjust the octave for the 
selected soundfont. So, when I select Trombone, I'd like the soundfont 
to adjust the incoming notes by -12. Yes, I can manually do it on my RPi 
interface, but it would be nicer to have it happen automatically.

Is there a global modulator I can use to do that? I'm using Polyphone.

Ben