NEN EN IEC 60118-4:2007被替代
Electroacoustics - Hearing Aids - Part 4: Induction Loop Systems For Hearing Aid Purposes - Magnetic Field Strength
出版：Nederlands Normalisatie Instituut
專家解讀視頻
Defines 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. It also specifies the minimum frequency response requirements for acceptable intelligibility. Applies 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.
Supersedes NEN 10118-4. (11/2002)
EN 60118-4:2015 - Identical
IEC 60118-4 Ed. 2.0 - Identical
SS EN 60118-4 Ed. 2 (2007) - Identical
