IEC 60118-16:2022

Overview

IEC 60118-16:2022 is an international standard developed by the International Electrotechnical Commission (IEC) specifically focused on electroacoustics related to hearing aids. This part 16 of the IEC 60118 series provides clear definitions and verification procedures for essential hearing aid features such as noise reduction and feedback reduction. The standard emphasizes the evaluation of acoustical input features without addressing binaural (two-ear) hearing aid functionalities.

The main objective of IEC 60118-16:2022 is to verify the existence and basic functionality of these hearing aid features rather than assess their performance. This standard is designed to be broadly applicable to various types of hearing aids, including air-conduction and bone conduction devices, supporting flexibility by using generalized definitions for hearing aid couplers and measurement procedures.

Key Topics

• Hearing Aid Feature Definitions
  The standard offers precise terminology for common hearing aid features like noise reduction, feedback reduction, hearing aid programs, and output limiters, establishing a unified language for manufacturers and testers.

• Verification Procedures
  Detailed measurement methodologies are described to confirm that hearing aid features exist and function properly under acoustical input conditions. This includes protocols for verifying noise reduction effectiveness, feedback reduction, number of channels, hearing aid programs (user-selected and automatic), and output limiters.

• Scope of Application
  While primarily focused on air-conduction hearing aids, IEC 60118-16:2022 includes guidance for adapting the standard to non-air-conduction devices such as bone conduction hearing aids, ensuring broad utility.

• Test Equipment and Settings
  Recommendations on acoustical test equipment and example test signals for typical listening situations are provided to promote standardized testing conditions.

• Feedback Reduction Verification
  Procedures include coupling methods to provoke feedback in hearing aids to measure and evaluate feedback reduction capabilities with defined data visualization techniques.

• Multichannel Signal Processing
  Verification of the number of hearing aid channels is supported through visualization and quantitative evaluation of independent frequency channels.

Applications

IEC 60118-16:2022 serves as a foundational document for manufacturers, testers, and regulatory bodies involved in the development, certification, and quality assurance of hearing aids. Its practical applications include:

• Product Development
  Assisting hearing aid designers in accurately defining device features and implementing standardized measurement practices to verify their correct operation.

• Quality Control and Certification
  Enabling conformity assessment organizations and manufacturers to verify feature existence and functionality reliably, thus ensuring product compliance with international norms.

• Research and Innovation
  Providing a consistent framework for researchers working on hearing aid acoustics to benchmark new technologies against internationally accepted definitions and methodologies.

• Consumer Protection
  Helping regulators and stakeholders confirm that hearing aids meet basic feature requirements, promoting transparency and trust in hearing aid performance claims.

Related Standards

• IEC 60118-0: Electroacoustics – Hearing aids – Part 0: Measurement of hearing aids with acoustical inputs
  This part provides the general definition of hearing aids adopted by IEC 60118-16 for consistency.

• IEC 60318 series: Electroacoustics – Simulators of human head and ear
  Relevant for test couplers and ear simulators referenced in verification procedures.

• IEC/TS 60318-7: Head and torso simulator for the measurement of air-conduction hearing aids
  Used for specific coupling setups during feedback reduction testing.

• ISO/IEC Directives
  Framework documents guiding the drafting and publication of IEC standards ensuring international consistency.

Adopting IEC 60118-16:2022 guarantees standardized verification of core hearing aid features, enhancing compatibility across devices and improving user confidence in hearing aid technology. Its clear definitions and universal test methods make it a critical standard for the ongoing advancement and regulation of hearing aid electroacoustics.