Standard
UPDATE AVAILABLE
IEC 60118-4:1981
[Superseded]Methods of measurement of electro-acoustical characteristis of hearing aids. Part 4: Magnetic field strength in audio-frequency induction loops for hearing aid purposes
Applies to audio-frequency induction loop systems producing an alternating magnetic field and intended to provide an input signal for hearing aids operating with an induction pick-up coil. Specifies a standard value of magnetic field strength in audio-frequency induction loops for hearing aid purposes, such as will give an adequate signal-to-noise ratio without overloading the hearing aid.
Published: 01/01/1981
Pages: 9
Content history
Content history
[Withdrawn]
[Superseded]
[Superseded]
[Superseded]
$37.69
AUD
Inclusive of GST
Available formats
Web Reader (PDF)
Licence:
1 user
Total
$37.69
