BSI - BS EN 60118-4
Hearing Aids - Part 4: Magnetic Field Strength in Audio-Frequency Induction Loops for Hearing Aid Purposes
|Publication Date:||15 November 1998|
|ICS Code (Electroacoustics):||17.140.50|
Gives a standard value of magnetic field strength in audio-frequency induction loops for hearing aid purposes that will give an adequate signal-to-noise ratio without overloading the hearing aid.