Development and Human Factors Evaluation of a Portable Auditory Localization Training System

Area of Science:

• Auditory perception research
• Human factors engineering
• Acoustics

Background:

• In-laboratory auditory localization training enhances sound localization with and without hearing protection devices (HPDs).
• A portable system is needed to provide similar training benefits for military applications.

Purpose of the Study:

• Design and develop a Portable Auditory Localization Acclimation Training (PALAT) system.
• Evaluate PALAT's training efficacy against a laboratory system.
• Assess PALAT's sensitivity to differences in electronic HPDs.

Main Methods:

• A full-factorial repeated measures experiment with 12 participants.
• Training and testing on PALAT and a laboratory system under open ear, TEP-100, and ComTac™ III conditions.
• Analysis of localization accuracy and front-back reversal errors.

Main Results:

• No statistical difference in localization accuracy between PALAT and the laboratory system.
• PALAT detected performance differences across the three listening conditions.
• Training benefits were comparable between the two systems.

Conclusions:

• The PALAT system provides training benefits similar to laboratory-grade systems.
• PALAT is sensitive to performance variations introduced by different HPDs.
• The system is suitable for improving auditory situation awareness in critical safety environments.