Acceptance and performance of the CP1170 sound processor in experienced adult cochlear implant recipients compared with the CP1150 sound processor and their current sound processor.
This investigation is planned to investigate the performance and clinical benefits of features that are new to the CP1170 Sound Processor. This study will build on the evidence previously collected on off-the-ear (OTE) sound processors and ForwardFocus, with particular focus on the acceptance and satisfaction of the automation of ForwardFocus in the CP1170 Sound Processor and associated components in general.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
OTHER
Masking
NONE
Enrollment
20
The CP1170 Sound Processor will be used to determine the hearing performance with the new implementation of ForwardFocus in SCAN 2 (SCAN 2 FF), as assessed by speech perception in noise.
Active comparator off-the-ear sound processor.
Cochlear Macquarie
Macquarie, Sydney, Australia
Paired Difference in dB SRT Between the CP1170 SCAN 2 FF (Automated ForwardFocus ON) and CP1170 SCAN 2 (ForwardFocus OFF) in 65 dB SPL (Sound Pressure Level) S0Nrearhalf 4Talker Babble (Speech Perception in Noise)
Speech perception in noise was measured using the Australian Speech Test In Noise (AUSTIN), which is a test that uses Bamford-Kowal-Bench (BKB)-like target sentences presented in adaptive noise. The goal of the speech perception test in noise was to provide the speech-to-noise ratio for 50% speech intelligibility.
Time frame: During a Single Ad-Hoc Visit (between Day 141 - Day 218)
Paired Difference in dB SRT Between the CP1170 SCAN 2 FF (Automated ForwardFocus ON) and CP1170 SCAN 2 (ForwardFocus OFF) in 65 dB SPL S0N3 Babble (Speech Perception in Noise)
Speech perception in noise was measured using the Australian Speech Test In Noise (AUSTIN), which is a test that uses Bamford-Kowal-Bench (BKB)-like target sentences presented in adaptive noise. The goal of the speech perception test in noise was to provide the speech-to-noise ratio for 50% speech intelligibility.
Time frame: During a single Ad-Hoc Visit (anytime between Day 141 - Day 218)
Paired Difference in Percentage CNC (Consonant-nucleus-consonant) Words Correct in Quiet (50 dB) Between the CP1170 Sound Processor and CP1150 Sound Processor (Commercial Version)
Speech perception in quiet was measured using the CNC monosyllabic words at 50 dB SPL from S0 position. The goal of speech perception assessment in quiet was to compare % words correct for each of the conditions.
Time frame: During Ad-Hoc Visit (anytime between Day 127 - Day 190)
Subjective Acceptance and Satisfaction Between the CP1170 Sound Processor and the Subject's Own Processor
Number of participants who were somewhat or very satisfied with the overall sound quality of their SCAN program (SCAN in own sound processor, SCAN 2 FF in CP1170) as indicated through two questionnaires. The CP1170 Questionnaire and Baseline Questionnaire have a 5-point Likert scale for each rating (with the values ranging from: 1 = least favourable option to 3 = Neutral to 5 = most favourable option).
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Time frame: 2 weeks
Paired Difference in Global SSQ12 Scores After Experience With the CP1170 Sound Processor and Own Processor
The SSQ12, which measures subjective hearing performance, is comprised of 12 items using the response format on a scale from 0 to 10, where 0 equals no ability and 10 equals perfect ability. These are divided into three sub-scales and the questions 1-5 are from the speech sub-scale, 6-8 from the spatial, and 9-12 from the qualities sub-scale. The three sub-scales are the average of the questions within. A 'not applicable' option is given for each item. The change from baseline is then calculated and the theoretical score could vary between -10 to +10. The higher the score, the higher the benefit. A positive score indicates improved hearing, and a negative value indicates impaired hearing.
Time frame: During a Single Ad-Hoc Visit (anytime between Day 23 - Day 70)