• Lucca Julie Nellemann
4. term, Engineering Psychology, Master (Master Programme)
A problem with hearing aids is that they do not always reduce the noise correctly, which can make it hard to follow a conversation in noisy surroundings. This master thesis seeks to investigate if eye gaze steering of a hearing aid can benefit the hearing aid user by testing two forms of eye gaze steering on a concept level; hard and soft eye gaze steering. An experiment is conducted with 13 hearing aid users answering questions by following a conversation during four different conditions; a familiarization round and a no, hard, and soft eye gaze steering condition. For every condition, participants answered a NASA Task Load Index (TLX) questionnaire for measuring workload, and after the experiment, an exit-interview was conducted. When calculating the percentage of correct answers during each condition the results show the familiarization round to have the most correct answers, followed by the hard eye gaze steering, soft eye gaze steering, and no steering with least correct answers. A significant difference is found between all conditions, except the hard and soft eye gaze steering. When measuring workload the only difference is found between the familiarization round and the three other conditions, where the familiarization is scoring lowest. The eye gaze steering of a hearing aid seems to work by reducing noise that participants do not want to listen to, and when asked about their preferences, participants preferred the hard eye gaze steering.
Publication date7 Jan 2020
Number of pages97
External collaboratorOticon Danmark AS
PhD studerende Poul Hoang PHOA@demant.com
ID: 319006739