N/A N=50 Other

Spectral Dynamics and Speech Understanding by Hearing Impaired People

Hearing Loss, Sensorineural

Bottom Line

View on ClinicalTrials.gov: NCT01867515 ↗

Enrolled (actual)

Serious AEs

0.0%

Results posted

Apr 2018

Primary outcome: Primary: Percent Correct Words Identified — 98.6; 97.1; 91.9; 98.8 percentage of words identified

Study Design & Population

Study type: Interventional
Phase: N/A
Interventions: Acoustic distortion of speech (Other)
Age: Adult, Older Adult · 18+ yrs
Sex: All
Sponsor: VA Office of Research and Development
Primary completion: Sep 2016

Outcome Measures

Outcome	Result	p-value
PRIMARY Percent Correct Words Identified	98.6; 97.1; 91.9; 98.8; 96.2; 91.3	—

Summary

The purpose of this program of research is to understand the perception of the dynamic spectral properties of speech by hearing-impaired listeners, with the long-term goal of improving speech understanding by these individuals in adverse listening conditions. The proposed research compares the performance of normally-hearing and hearing-impaired listeners on measures of speech understanding in the presence of different types of signal distortion and speech understanding of signals with enhanced spectral dynamics. A computational model based on the amount of potential information available in speech will be used to quantify differences in speech intelligibility due to hearing status and stimulus characteristics.

Eligibility Criteria

Inclusion Criteria

individuals with hearing thresholds of 20 dB HL or better at all octave frequencies between 250 Hz and 4000 Hz
or, individuals with bilateral sensorineural hearing losses with thresholds between 25 and 70 dB HL and no losses greater than 70 dB HL at frequencies of 4000 Hz or below

Exclusion Criteria

a conductive hearing impairment or other otological pathology
hearing thresholds greater than 70 dB HL at any frequencies of 4000 Hz or below or pure-tone averages (averaged across 500, 1000, and 2000 Hz) of greater than 65 dB HL
bilateral differences greater than 20 dB at any frequency below 4000 Hz
an inability to complete the experimental tasks

View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT01867515). 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.