CompletedNot Applicable

Use of Frequency Compression in Severe-profound Hearing Loss Adults

27 participantsStarted 2015-04

Plain-language summary

The purpose of this study is to investigate the functional benefits of frequency compression vs no frequency compression or fitted to hearing loss in severe-profound hearing impaired adults with high frequency hearing losses. Thus, assessing whether hearing aids for this patient population can be adapted to improve speech perception.

Who can participate

Age range18 Years

SexALL

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Inclusion criteria

✓. Participants must be over 18 years of age- This study is looking at the use of frequency compression \& its effects of speech perception in adults.
✓. No ear surgery that would make it impossible to fit a hearing aid- To ensure limited confounding variables.
✓. No history of ear surgery within the last 12 months- To ensure limited confounding variables.
✓. No history of ear infection(s) within the last 6 months- To ensure no contraindications and limited confounding variables to testing.
✓. No otoscopic abnormality making it impossible to fit a hearing aid- To ensure no contraindications to testing.
✓. Bilateral severe-profound hearing impairment with air conduction thresholds \>71dBHL within the frequency range of 250Hz to 4 kHz- To analyse the effects of frequency compression on speech perception within this patient population.
✓. Post lingual deafness, with good spoken English- To ensure reliability of speech testing.
✓. Previous bilateral digital hearing aid experience (6+ months)- To ensure limited confounding variables.

Exclusion criteria

✕. Participants under the age of 18 years.
✕. History of ear surgery making it impossible to fit a hearing aid.
✕. History of ear surgery within the last 12 months.

What they're measuring

CHEAR Auditory Perception Test

Timeframe: 4 weeks post hearing aid fitting with adapted hearing aid feature

Adaptive Bamford-Kowal-Bench Test

Timeframe: 4 weeks post hearing aid fitting with adapted hearing aid feature

Trial details

NCT IDNCT04623112

SponsorUniversity College, London

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2015-06

View on ClinicalTrials.gov More Frequency Compression trials