Paper Contents
Abstract
Accurate assessment of hearing thresholds requires effective control of ambient noise levels to prevent masking of test signals. International standards specify maximum permissible ambient noise levels for audiometric testing environments when using certain transducer types. However, these standards do not provide explicit values for all transducers currently in use. This paper highlights the importance of adhering to ambient noise criteria during audiometric testing, reviews the relevant ISO recommendations, and presents an overview of the standardized method for estimating permissible ambient noise levels for transducers not explicitly covered in existing standards. The results demonstrate that insert earphones allow for higher ambient noise levelsparticularly in low-frequency bandswhile still ensuring reliable threshold measurements. These findings support the suitability of insert earphones for use in testing environments where ambient noise control is limited and offer a practical reference for cases where specific transducer data is not provided in existing standards.
Copyright
Copyright © 2025 Alok Narang. This is an open access article distributed under the Creative Commons Attribution License.
