A Comparison of Single-Channel Linear Amplification and Two-Channel Wide-Dynamic-Range-Compression Amplification by Means of an Independent-Group Design The present study used an independent-group design to compare the benefits provided by binaural, single-channel, linear, full-shell in-the-ear hearing aids and binaural, 2-channel, wide-dynamic-range-compression in-the-canal hearing aids in groups of older hearing aid wearers. Hearing aid outcome measures were obtained at both 1-month (n = 53) and 6-month (n = ... Research Article
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Research Article  |   June 01, 2004
A Comparison of Single-Channel Linear Amplification and Two-Channel Wide-Dynamic-Range-Compression Amplification by Means of an Independent-Group Design
 
Author Affiliations & Notes
  • Larry E. Humes
    Indiana University, Bloomington
  • Lauren E. Humes
    Indiana University, Bloomington
  • Dana L. Wilson
    Indiana University, Bloomington
  • Corresponding author: e-mail: humes@indiana.edu
Article Information
Hearing & Speech Perception / Hearing Aids, Cochlear Implants & Assistive Technology / Research and Technology / Research Articles
Research Article   |   June 01, 2004
A Comparison of Single-Channel Linear Amplification and Two-Channel Wide-Dynamic-Range-Compression Amplification by Means of an Independent-Group Design
American Journal of Audiology, June 2004, Vol. 13, 39-53. doi:10.1044/1059-0889(2004/007)
History: Received September 12, 2003 , Accepted December 16, 2003
 
American Journal of Audiology, June 2004, Vol. 13, 39-53. doi:10.1044/1059-0889(2004/007)
History: Received September 12, 2003; Accepted December 16, 2003

The present study used an independent-group design to compare the benefits provided by binaural, single-channel, linear, full-shell in-the-ear hearing aids and binaural, 2-channel, wide-dynamic-range-compression in-the-canal hearing aids in groups of older hearing aid wearers. Hearing aid outcome measures were obtained at both 1-month (n = 53) and 6-month (n = 34) postfit intervals with each device. Outcome measures included multiple measures of speech-recognition performance and self-report measures of hearing aid benefit, satisfaction, and usage. Aided sound-quality measurements were also obtained. Although both devices provided significant benefits to the wearers, there were no significant differences in the benefits provided by either device at the 1-month or 6-month postfit intervals.

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