IEC 60118-4:1981 ED1

Name: IEC 60118-4:1981 ED1
Brand: IEC
SKU: IEC 60118-4:1981 ED1
Price: 24.2 EUR
Availability: InStock
Rating: 4 (71 reviews)

Methods of measurement of electro-acoustical characteristis of hearing aids. Part 4: Magnetic field strength in audio-frequency induction loops for hearing aid purposes

Publication date: Jan 1, 1981

General information

Current stage: 99.60 Withdrawal effective Oct 27, 2006

Originator: IEC

Owner: TC 29

Type: International Standard

ICS: 17.140.50 Electroacoustics

Buying

Status: Revised

PDF - €24.20

Languages: English French Spanish

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Scope

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.

Life cycle

NOW

WITHDRAWN
IEC 60118-4:1981 ED1
99.60 Withdrawal effective
Oct 27, 2006

CORRIGENDA / AMENDMENTS

WITHDRAWN
IEC 60118-4:1981/AMD1:1998 ED1

REVISED BY

WITHDRAWN
IEC 60118-4:2006 ED2