DS/EN 60118-4:2007
Electroacoustics - Hearing aids - Part 4: Induction loop systems for hearing aid purposes - Magnetic field strength

Standard No.

DS/EN 60118-4:2007

Release Date

2007

Published By

Danish Standards Foundation

Latest

DS/EN 60118-4:2007

Replace

DS/EN 60118-4+A1-1998

Scope

This standard is applicable to audio-frequency induction loop systems producing an alternating magnetic field at audio frequencies and intended to provide an input signal for hearing aids operating with an induction pick-up coil.The standard specifies requirements for the field strength in audio-frequency induction loops for hearing aid purposes, which will give adequate signal-to-noise ratio without overloading the hearing aid. The standard also specifies the minimum frequency response requirements for acceptable intelligibility.Methods for measuring the magnetic field strength are specified, and information is given on appropriate measuring equipment (see

DS/EN 60118-4:2007 history

• 2007 DS/EN 60118-4:2007 Electroacoustics - Hearing aids - Part 4: Induction loop systems for hearing aid purposes - Magnetic field strength