Historical
IEC 60118-1 Ed. 3.1 b:1999
Hearing aids - Part 1: Hearing aids with induction pick-up coil input
Specifies a method of determining the electroacoustic performance of hearing aids fitted with an induction pick-up coil and used in an audio-frequency magnetic field. The induction pick-up performance is measured in a loop simulating conditions of use in room applications.
International Electrotechnical Commission [iec]