Evaluation of a HiRes™ Optima Sound Processing Strategy for the HiResolution™ Bionic Ear

The purpose of this study is to compare a new sound processing strategy to the current sound processing strategy.

Inclusion Criteria:

• Unilateral or bilateral user of CII/HiRes90K™ implant(s) (minimum of one year in each implanted ear), Harmony™ BTE processor(s) with HiRes Fidelity 120™ (with or without ClearVoice™) as preferred sound processing strategy
• 18 years of age or older at time of implant
• Postlingual onset of severe-to-profound hearing loss (≥ 6 years of age)
• At least moderate open-set speech recognition abilities (defined as CNC word score ≥ 50% in medical records or assessed at the Baseline Visit with implant alone for unilateral users, with both implants together for bilateral users)
• English language proficiency
• Willingness to use a Harmony™ BTE processor and refrain from ClearVoice™ use for the duration of the study
• Willingness and ability to participate in all scheduled procedures outlined in the protocol

Exclusion Criteria:

• Presence of any additional disabilities that would prevent or interfere with participation in the required speech perception testing