I think I’ve settled on a tuning system for my Bionic Ear Institute piece. It’s a tricky thing. I’m trying to build up pitches based on overtones of a fundamental frequency. Each electrode in a cochlear implant is designed to respond to only a certain bandwidth of frequencies. The range of bandwidths used mean that certain parts of the scale will be received and interpreted differently, depending on which octave you play in.
Luckily, Robin Fox has sent me an implant simulator, which I am now using to test out different harmonies and combinations. Of course, the interaction of overtones with the cochlear implant becomes more complex still when differentiating between different instrumental timbres.