Hearing Study: Sensitivity to Features of Speech Sounds
The purpose of this study is to better understand the sensitivity of listeners to the fast changes in frequency or amplitude of sounds that occur in speech. The investigators are studying ways to manipulate these aspects of sounds in an effort to make speech sounds more clear.
Condition or disease Intervention/treatment Phase
Hearing Loss, Sensorineural
Other: Signal processing to improve intelligibility
The investigators will test listeners with normal hearing or with mild or moderate hearing loss. Tests will first focus on sensitivity to changes in fast changes in amplitude (loudness) or frequency (pitch) in sounds. Then the investigators will test the intelligibility of synthetic vowels and syllables in which these “chirps” are manipulated. Finally, the investigators will test intelligibility of words in noise while manipulating sounds in an effort to improve clarity.
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Study Type : Interventional (Clinical Trial)
Estimated Enrollment : 200 participants
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Official Title: Auditory Processing of Complex Sounds – Sensitivity to Chirps
Actual Study Start Date : January 15, 2020
Estimated Primary Completion Date : November 30, 2023
Estimated Study Completion Date : November 30, 2023