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Related Experiment Videos

Extended bandwidth nonlinear frequency compression in Mandarin-speaking hearing-aid users.

Wen-Hsuan Tseng1, Dun-Lieh Hsieh1, Wan-Ting Shih1

  • 1Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.

Journal of the Formosan Medical Association = Taiwan Yi Zhi
|April 11, 2017
PubMed
Summary

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Extended-bandwidth nonlinear frequency compression (EB-NLFC) improved Mandarin word and consonant recognition in patients with high-frequency hearing loss. While beneficial, the gains were modest, particularly in noisy environments.

Area of Science:

  • Audiology
  • Speech Science
  • Hearing Aid Technology

Background:

  • High-frequency speech information is crucial for speech recognition.
  • Nonlinear frequency compression (NLFC) aids individuals with high-frequency hearing loss.
  • Mandarin has seven consonants in the 10-16 kHz range, potentially benefiting from extended bandwidth.

Purpose of the Study:

  • To evaluate the impact of NLFC and EB-NLFC on Mandarin word recognition.
  • To assess the efficacy of EB-NLFC for Mandarin speakers with high-frequency hearing loss.

Main Methods:

  • A single-blind randomized crossover study included 14 Mandarin-speaking adults with high-frequency hearing loss.
  • Participants were tested unaided and with NLFC and EB-NLFC hearing aids.
  • Assessments included the Mandarin Monosyllable Recognition Test (MMRT) and Mandarin Hearing in Noise Test (MHINT).
Keywords:
Mandarin Hearing in Noise TestMandarin Monosyllable Recognition Testhearing aidnonlinear frequency compression

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Main Results:

  • EB-NLFC significantly improved word and consonant recognition (MMRT, p<0.05).
  • The Mandarin Hearing in Noise Test (MHINT) showed trends favoring EB-NLFC, but without statistical significance.
  • Subjective outcomes (IOI-HA, sound quality) favored EB-NLFC but were not statistically significant.

Conclusions:

  • EB-NLFC may offer enhanced word and consonant recognition for Mandarin speakers with high-frequency hearing loss.
  • The benefits of EB-NLFC were less pronounced in noisy listening conditions.
  • Subjective feedback did not demonstrate a significant advantage for EB-NLFC over standard NLFC.