The stimuli consist of speech in quiet, speech in noise, reverberant speech, and music recorded with different hearing aid settings, post-processed for headphone presentation and incorporated in an online sound survey. Participants will receive tablets and headphones to conduct a sound quality rating at home. The survey will involve a training session and within-subject repeated measures. Stimuli presentation will be randomized by sound quality rating tool.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
12
Each participant will listen to sound samples via headphones. Sound samples have been recorded with a hearing aid that was set to each participant's individual hearing loss and different amplification strategies, and an unaided reference. Participants will be asked to rate different aspects of sound quality while listening to the different sound samples.
Sonova Innovation Centre Toronto
Mississauga, Ontario, Canada
Sound Quality Rating
Participants moved through a self-guided, double-blinded sound survey which presented sound samples of all hearing aid conditions (see Arms/Groups for conditions) and asked participants to rate the sound quality dimensions on a scale. The rating dimensions and scales were based on a sound quality rating guidance document by Delta Labs (Danmark) ranging from 0 to 100 with step sizes of 1 and descriptive markers at 0 (worst), 20, 40, 60, 80 and 100 (best) depending on the dimension (Reverberation (only assessed for Speech in Quiet and Reverberant Speech), Sound Source Localization, Sound Source Separation, and Timbral Balance). Overall Preference was implemented as a ranking according to the 5-point Mean Opinion Score (bad (1), poor (2), fair (3), good (4), excellent (5); MOS, International Telecommunication Union, 1996).
Time frame: 1 hour
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