IEC 60118-8:2017 is an international standard that pertains to the performance characteristics and testing methods for hearing aids in relation to their compatibility with audio or audio-visual systems.
and Purpose
The purpose of IEC 60118-8:2017 is to ensure that hearing aids can function optimally when used in conjunction with audio or audio-visual systems such as televisions, radios, and other devices. The standard specifies the requirements for electromagnetic immunity and defines the appropriate test methods to evaluate the performance of hearing aids in different electromagnetic environments.
Technical Specifications
The technical specifications outlined in IEC 60118-8:2017 focus on the electromagnetic compatibility (EMC) of hearing aids. It sets limits for the electromagnetic emissions from audio or audio-visual systems and also defines the levels of immunity required for hearing aids to operate effectively without interference.
The standard provides guidelines on the maximum permissible levels of radio frequency (RF) interference that can be generated by audio or audio-visual equipment to avoid interference with hearing aids. It ensures that the use of such systems does not compromise the audibility and intelligibility of sounds for individuals with hearing loss who rely on hearing aids.
Testing Methods
IEC 60118-8:2017 prescribes specific test configurations and procedures to assess the impact of various electromagnetic disturbances on hearing aids. These tests measure parameters like sensitivity, gain, noise levels, and distortion in hearing aids exposed to electromagnetic fields from different sources.
Furthermore, the standard also addresses direct audio input (DAI) systems, which allow external audio signals to connect directly to the hearing aids. It includes guidelines for testing the immunity of these systems to electromagnetic disturbances.
In conclusion, IEC 60118-8:2017 is a crucial standard that ensures hearing aids can function properly when used in conjunction with audio or audio-visual systems. It sets technical specifications and testing methods to evaluate the compatibility and immunity of hearing aids to electromagnetic fields. By adhering to this standard, manufacturers can guarantee that their hearing aid devices will provide optimal performance and improve the overall user experience for individuals with hearing loss.
Nina She