Normal threshold of hearing at preferred frequencies

Area of Science:

• Audiology
• Acoustics
• Hearing Science

Background:

• Establishing precise normal hearing thresholds is crucial for audiological assessments.
• International standards for hearing measurement require updated data across specific frequencies.

Purpose of the Study:

• To determine hearing thresholds in young, normal-hearing individuals.
• To provide data supporting the development of an international standard for normal hearing thresholds.
• To measure hearing sensitivity at preferred acoustical measurement frequencies.

Main Methods:

• Hearing thresholds were measured in 10 young normal-hearing subjects.
• Measurements were conducted at 1/3 octave intervals from 500 Hz to 8000 Hz.
• Sound pressure levels were measured using an acoustic coupler (IEC 303) and an artificial ear (IEC 318).

Main Results:

• Equivalent threshold sound pressure levels were obtained for each subject.
• Data were collected at frequencies relevant for international acoustical standards.
• The study provides a dataset for normal hearing sensitivity in the tested range.

Conclusions:

• The collected data contribute to the ongoing international standardization of hearing threshold measurements.
• These findings can inform the development of more accurate audiological assessment tools.
• The study validates measurement techniques using standardized acoustic couplers and artificial ears.