Bring me the octaves!
This version features a handy octave system. I used the capacitive touch inputs available on the ESP32. Touching the first metal sensor transposes the MIDI output one octave lower, Touching both sensor 1 and 2 simultaneously transposes 2 octaves down. Touching only the second sensor will transpose the data 3 octaves down.
The mechanical octave key is mapped with another Hall Effect sensor. This means, the natural range of the saxophone is fully mapped. The system will follow all actions on the instrument. Extended range of the instrument is mapped through the fingering chart of the corresponding ‘toptones’.
The extra touch octave keys shown below extend the lower range, effectively enabling 3 more octaves to be played from the instrument. This adds up to approximately 3 natural octaves and 3 MIDI octaves, putting the Hybrid Sax system in the Akai EWI ballpark of MIDI range.
