Quality and reliability study of hearing aid. Adults with mild to severe hearing loss will wear hearing aids daily for approximately 3 months.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
19
Rechargeable hearing aid
Sonova
Aurora, Illinois, United States
Electroacoustic Evaluation of Hearing Aids in Accordance With Manufacturer Specifications, Day 1
Test box electroacoustic measurements of hearing aid done at full on settings must meet manufacturer product specifications per manufacturer data sheet. This includes maximum and high frequency average output sound pressure level, maximum and high frequency average acoustic gain, frequency response range, total harmonic distortion and equivalent input noise level. This is done using an Audioscan Verifit2 electroacoustic analyzer. Electroacoustic measurements listed above will also be taken with hearing aid set to user settings, as a baseline measure for all future appointments.
Time frame: Day 1 of study
Electroacoustic Evaluation of Hearing Aids in Accordance With Manufacturer Specifications, Day 45
Test box electroacoustic measurements (using the Audioscan Verifit 2 Electroacoustic Analyzer) of hearing aid done at user gain settings after daily use for extended period of time. Results will be compared to baseline electroacoustic measures taken on day 1 of study. A "pass" means that devices were within tolerance levels (per ANSI S3.22-2014) of baseline measures. A "fail" means that devices were not within tolerance levels of one or more baseline measures (i.e. output, gain, frequency range, total harmonic distortion, or equivalent input noise level).
Time frame: Day 45 of study
Electroacoustic Evaluation of Hearing Aids in Accordance With Manufacturer Specifications, Day 90
Test box electroacoustic measurements of hearing aid done at user gain settings after daily use for extended period of time. Test box electroacoustic measurements of hearing aid done at user gain settings after daily use for extended period of time. Results will be compared to baseline electroacoustic measures taken on day 1 of study. A "pass" means that devices were within tolerance levels (per ANSI S3.22-2014) of baseline measures. A "fail" means that devices were not within tolerance levels of one or more baseline measures (i.e. output, gain, frequency range, total harmonic distortion, or equivalent input noise level).
Time frame: Day 90 of study
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