I am currently doing a university project creating a MIDI wind controller in the stye of a harmonica. unlike other wind controllers this requires multiple triggers. i have been looking at using pressure sensors and going into the analog inputs. basically i want to be able to control velocity based on the breath pressure so the harder someone blows the louder it gets. the arduino boards seem to have a maximum number of 16 analog inputs, for this project i think i would need 20.
i am fairly new to this so if anyone can suggest any solutions or better alternatives, it would be much appreciated.