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Speech levels and speech-to-noise ratios.

British Journal of Audiology

|May 1, 1986

Summary

This summary is machine-generated.

Speech and background noise levels in schools for the deaf and partially-hearing units were measured. High noise levels were found, indicating poor acoustic environments for hearing aid use.

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Area of Science:

Audiology
Educational Acoustics
Speech Science

Background:

Effective communication and learning in educational settings for hearing-impaired children depend on optimal acoustic conditions.
Previous research indicates potential challenges with speech intelligibility and hearing aid efficacy in noisy environments.

Purpose of the Study:

To assess the speech levels of teachers and pupils in schools for the deaf and partially-hearing units (PHUs).
To measure background noise levels within these educational environments.
To evaluate the suitability of the acoustic conditions for hearing aid use.

Main Methods:

Acoustic measurements were conducted in 12 classes across 5 schools for the deaf and 8 PHUs.
Speech levels of teachers and pupils were recorded at a distance of 2 meters.

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Background noise levels, including quasi-stationary and short-duration noise, were quantified using dBA metrics.

Main Results:

Average teacher speech level was 57.5 dBA (range 40-70 dBA); average pupil speech level was 52.9 dBA (range 45-67 dBA).
Background noise levels were unacceptably high, ranging from 44.6 dBA (quasi-stationary) to 76.5 dBA (short-duration).

Conclusions:

The prevailing acoustic environments in schools for the deaf and PHUs are not conducive to effective hearing aid use.
Recommendations for improving acoustic conditions are necessary to support the educational and auditory needs of hearing-impaired students.