EN 60118-4:1998

Hearing aids - Part 4: Magnetic field strength in audio-frequency induction loops for hearing aid purposes EN 60118-4:1998

Publication date:   Jun 19, 2000

Scope

Applies to audio-frequency induction loop systems producing an alternating magnetic field and intended to provide an input signal for hearing aids operating with an induction pick-up coil. Specifies a standard value of magnetic field strength in audio-frequency induction loops for hearing aid purposes, such as will give an adequate signal-to-noise ratio without overloading the hearing aid.