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FC: Use of Frequency Compression in Severe-profound Hearing Loss Adults

Sponsor
University College, London (Other)
Overall Status
Completed
CT.gov ID
NCT04623112
Collaborator
(none)
27
Enrollment
3
Arms
2
Duration (Months)

Study Details

Study Description

Brief 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.

Condition or Disease Intervention/Treatment Phase
  • Device: Hearing aid feature: Frequency Compression
 N/A

Detailed Description

Frequency compression is a feature available on some digital hearing aids, which is aimed at increasing the audibility of high frequency sounds. It works by taking sounds above a fixed start frequency and compresses it into lower frequencies where residual hearing is better.

Study Design

Study Type:
Interventional
Actual Enrollment :
27 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Single (Participant)
Primary Purpose:
Treatment
Official Title:
Do Severe-profound Hearing Impaired Adults Perform Better in Speech Perception With Frequency Compression Switched on or Off or Fitted to Hearing Loss
Study Start Date :
Apr 1, 2015
Actual Primary Completion Date :
Jun 1, 2015
Actual Study Completion Date :
Jun 1, 2015

Arms and Interventions

Arm Intervention/Treatment
Other: FC Deactivated

Frequency Compression feature on hearing aids is deactivated for 4 weeks

Device: Hearing aid feature: Frequency Compression
FC Deactivated/Activated & set to default/Activated & set to hearing loss
Other Names:
  • Non-linear Frequency Compression

    		•
    Experimental: FC activated & set to default

    Frequency compression feature activated on hearing aids and set to default software settings for 4 weeks.

    Device: Hearing aid feature: Frequency Compression
    FC Deactivated/Activated & set to default/Activated & set to hearing loss
    Other Names:
  • Non-linear Frequency Compression

    		•
    Experimental: FC activated and set to hearing loss

    Frequency Compression feature activated on hearing aids and set to hearing loss cut-off for 4 weeks

    Device: Hearing aid feature: Frequency Compression
    FC Deactivated/Activated & set to default/Activated & set to hearing loss
    Other Names:
  • Non-linear Frequency Compression

    		•

    Outcome Measures

    Primary Outcome Measures

    1. CHEAR Auditory Perception Test [4 weeks post hearing aid fitting with adapted hearing aid feature]

      Aided Monosyllabic Speech Test

    2. Adaptive Bamford-Kowal-Bench Test [4 weeks post hearing aid fitting with adapted hearing aid feature]

      Aided Sentence Test

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years and Older
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:

    1. 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.

    2. No ear surgery that would make it impossible to fit a hearing aid- To ensure limited confounding variables.

    3. No history of ear surgery within the last 12 months- To ensure limited confounding variables.

    4. No history of ear infection(s) within the last 6 months- To ensure no contraindications and limited confounding variables to testing.

    5. No otoscopic abnormality making it impossible to fit a hearing aid- To ensure no contraindications to testing.

    6. 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.

    7. Post lingual deafness, with good spoken English- To ensure reliability of speech testing.

    8. Previous bilateral digital hearing aid experience (6+ months)- To ensure limited confounding variables.

    9. Written consent required.

    Exclusion Criteria:

    1. Participants under the age of 18 years.

    2. History of ear surgery making it impossible to fit a hearing aid.

    3. History of ear surgery within the last 12 months.

    Contacts and Locations

    Locations

    No locations specified.

    Sponsors and Collaborators

    • University College, London

    Investigators

    • Study Chair: Deborah Vickers, Phd, UCL Ear Institute

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    None provided.
    Responsible Party:
    University College, London
    ClinicalTrials.gov Identifier:
    NCT04623112
    Other Study ID Numbers:
    • 15/0217
    First Posted:
    Nov 10, 2020
    Last Update Posted:
    Nov 10, 2020
    Last Verified:
    Nov 1, 2020
    Individual Participant Data (IPD) Sharing Statement:
    Undecided
    Plan to Share IPD:
    Undecided
    Additional relevant MeSH terms:
    Hearing Loss
    Deafness

    Study Results

    No Results Posted as of Nov 10, 2020