Electroacoustics. Hearing aids - Methods of measurement of performance characteritics of hearing aids under simulated in situ working conditions Ingestion-build-159183 8 Tolerance against postulated latent

8 Tolerance against postulated latent software faults

Passive sampling involves the deployment of a calibrated device that uses a diffusion gradient to collect pollutants over a period of days to weeks

general safety

general design of the frame

Electroacoustics. Hearing aids - Methods of measurement of performance characteritics of hearing aids under simulated in situ working conditions Ingestion-build-159183 8 Tolerance against postulated latent1 Scope The purpose of this part of IEC 60118 is to describe methods for a test which simulates the acoustical effects of a median adult wearer on the performance of a hearing aid. It establishes certain guidelines for simulated in situ measurements of hearing aids; it describes a simplified method for simulated in situ measurements of hearing aids and a description for determination of the directivity index (DI) of directional microphones in hearing