N/A
Completed N=67
Hearing Study: Sensitivity to Features of Speech Sounds
Hearing Loss, Sensorineural
Source: ClinicalTrials.gov NCT03666676 ↗
Enrolled (actual)
67
Serious AEs
0.0%
Results posted
May 2025
Primary outcomePrimary: Pure-tone Average Thresholds — 7.3; 30.8; 46.9 Hearing level in dB SPL
Summary
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.
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Pure-tone Average Thresholds |
7.3; 30.8; 46.9 | — |
| PRIMARY F1 Discrimination Threshold |
5; 7.8; 5.9 | — |
| PRIMARY F2 Discrimination Threshold |
4; 21; 30.8 | — |
Eligibility Criteria
Inclusion Criteria
- Normal hearing, mild or moderate symmetric sensorineural hearing loss.
Exclusion Criteria
- Asymmetric hearing thresholds (more than 15 decibels (dB) threshold difference between the two ears at any frequency up to 4 kHz).
- Severe hearing loss (greater than 60 dB hearing thresholds at any frequency up to 4 kHz).
Data sourced from ClinicalTrials.gov (NCT03666676). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.