I play harmonica through guitar multi-effects processors which enable me to use different amp models and effects (reverb, delay, flange, pitch shift, etc.). It works quite well and I am able to creatively approach far more genres and styles this way. However, there are limitations with these specific devices, such as instrumentation. For example, I often want to be able to produce the sounds of brass instruments, which can be done in MIDI but not on these devices. Today's MIDI is so unbelievable that there has to be a way to convert my analog microphone [input] to a digital signal then be able to access the world of MIDI (for live performances). Maybe this has been done, maybe it hasn't but with today's tools in must be possible. This creative use would radically enhance not only the harmonica but all "wind" instruments. Any and all advice and solutions would be greatly appreciated.
There are some pitch to midi solutions out there but I haven't really tried them. The only one I have played with is the iPhone app MIDI guitar which is really designed for guitar as the name implies rather than harmonica, but it may still work. It certainly was decent for guitar, including picking chords up. You need an iPhone-compatible microphone to work with it.
If you use a high impedance microphone with a 1/4" plug, the Sonuus Guitar-to-MIDI Converter should work.
I've definitely heard of MP3 to MIDI converters, however I've never heard of them being used in a live performance. Have you tried looking for/making an electric harmonica? One that has TPDT (Triple Pole Double Throw) switches inside of the tube thingies that move back and forth as you draw air in and out. It's an idea, but if you do make it and patent it, please mention me!:D
Good Luck
Chris
If you use a high impedance microphone with a 1/4" plug, the Sonuus Guitar-to-MIDI Converter should work.