Adam from my experience should be an "interesting time" when your Implant is activated. Sounded weird as I recall but got used to it. The key is mapping which adjusts everything to you. Also, give yourself time to adjust-most of us need time.
I have mentioned this before when I was activated went to a singles dance 3 days later! the music sounded about an octave to high! Changed the next day-lucky a mapping appointment. You will strange sounds from everywhere- yeah streetcars with "dance music"! Just harmonic sounds.
Much immediate success Adam as it takes time to ultimately get used to your new Implant.
Implanted Sunnybrook Advanced Bionics-Harmony activated Aug/07