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Related Experiment Videos

Warble tone as an audiometric stimulus.

G D Dockum, D O Robinson

The Journal of Speech and Hearing Disorders

|August 1, 1975

Summary

This summary is machine-generated.

Warble-tone hearing tests yield results comparable to pure-tone tests for normal-hearing individuals. Small differences were observed, supporting warble tone

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Area of Science:

Audiology
Hearing Science

Background:

Pure-tone audiometry is the standard for hearing threshold measurement.
Warble tones are an alternative stimulus, but their comparability to pure tones requires investigation.

Purpose of the Study:

To compare pure-tone and warble-tone hearing thresholds in normal-hearing adults.
To determine if warble-tone audiometry can be reliably used as an alternative to pure-tone audiometry.

Main Methods:

198 normal-hearing adults participated.
Hearing thresholds were measured using both pure tones and warble tones.
Tests were conducted at six octave frequencies from 250 to 8000 Hz.

Main Results:

Statistically significant differences between pure-tone and warble-tone thresholds were found at 500, 2000, 4000, and 8000 Hz (p < 0.01).

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The mean differences were small, with the largest being 2.3 dB at 8000 Hz.

Conclusions:

Warble-tone audiometry with specific parameters (±5% frequency deviation, 5 Hz modulation rate) provides results comparable to pure-tone audiometry.
Audiologists can confidently use warble tones for threshold measurements in normal-hearing individuals and those with flat hearing loss.