Performance of Subjects Fit With the Advanced Bionics CII and Nucleus 3G Cochlear Implant Devices

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Abstract
The cochlear implants available in the United States differ in terms of signal processing strategies and in the hardware that implements those strategies. It is likely that some of these differences in hardware and software lead to differences in subject performance. Herein we report the outcomes of an experiment in which the perception of speech, voice, and music was assessed (1) in subjects who used the Advanced Bionics Corporation (Sylmar, Calif) Hi-Focus electrode array with positioner, CII Bionic Ear behind-the-ear speech processor, and Hi-Resolution sound processing strategy (CII subjects) and (2) in subjects who used the Cochlear Corporation (Englewood, Colo) Nucleus 24 electrode array, ESPrit 3G behind-the-ear speech processor (3G), and Advanced Combination Encoder (ACE) speech coding strategy (3G subjects). Our aim was to find aspects of speech understanding that are better conveyed by one speech processing scheme than the other and to use that information to design better speech processors.

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