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[Loudness discomfort level in normal hearing individuals].

Keila Alessandra Baraldi Knobel1, Tanit Ganz Sanchez

  • 1Faculdade de Medicina da Universidade de São Paulo. keila@fonoesaude.org

Pro-Fono : Revista De Atualizacao Cientifica
|April 22, 2006
PubMed
Summary

Loudness Discomfort Level (LDL) in normal hearing adults ranges from 86 to 98 dBHL. This study found no correlation between LDL and Acoustic Reflex Threshold (ART), indicating cautious interpretation for tinnitus and hyperacusis patients.

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Area of Science:

  • Audiology
  • Psychoacoustics

Context:

  • Loudness Discomfort Level (LDL) is utilized in hearing aid fitting and recommended for evaluating tinnitus and hyperacusis.
  • Establishing normative data for LDL is crucial for clinical audiological assessments.

Purpose:

  • Determine reference Loudness Discomfort Level (LDL) values in normal-hearing individuals.
  • Investigate the correlation between LDL and Acoustic Reflex Threshold (ART).

Summary:

  • Investigated LDL in 64 normal-hearing adults (18-25 years) using pure tones and speech stimuli across frequencies 0.5-8 kHz.
  • Median LDL values ranged from 86-98 dBHL, with no significant differences based on gender, ear, or test-retest.
  • No statistically significant correlation was found between Loudness Discomfort Level (LDL) and Acoustic Reflex Threshold (ART).

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Impact:

  • Provides normative LDL values (86-98 dBHL) for normal-hearing individuals.
  • Highlights the need for cautious interpretation of LDL results, considering individual patient history.
  • Suggests LDL can be a valuable tool for monitoring patients with auditory complaints.