
Hearing aids. Magnetic field strength in audio-frequency induction loops for hearing aid purposes
出版:British Standards Institution

專(zhuān)家解讀視頻
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.
? British Standards Institution 2013
IEC 60118-4 Ed. 1.0 - Identical