BS 6083-4:1981
$42.47
Hearing aids – Specification for magnetic field strength in audio-frequency induction loops for hearing aid purposes
Published By | Publication Date | Number of Pages |
BSI | 1981 | 8 |
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.