Electroacoustics - Hearing aids - Part 4: Induction-loop systems for hearing aid purposes - System performance requirements

This document establishes comprehensive technical specifications governing the performance of induction loop systems designed for hearing assistance devices within the electroacoustic field. It outlines precise requirements essential for ensuring that such audio transmission systems operate effectively to support individuals relying on hearing aids equipped with telecoil functionality. The scope encompasses definitions, measurement methods, and minimum performance criteria necessary for consistent signal quality and compatibility across various installation environments. By setting clear benchmarks for parameters like frequency response, signal-to-noise ratio, and distortion levels, the standard facilitates the development and deployment of reliable assistive listening infrastructure. It serves as a technical reference for manufacturers, system integrators, and testing laboratories aiming to verify that induction loop installations meet established industry expectations for clarity and usability. The content focuses strictly on the engineering attributes and operational characteristics required for these systems to function optimally in public and private spaces, ensuring seamless interaction between the transmission loop and the receiving hearing aid device without referencing specific administrative origins or dates of issuance.