Hello. Sign In
Standards Store
Look Inside

IEC 60118-4

3rd Edition, December 1, 2014

Complete Document

Electroacoustics – Hearing aids – Part 4: Induction-loop systems for hearing aid purposes – System performance requirements



View Abstract
Product Details
Document History

Detail Summary

Active, Most Current

EN
FR
Additional Comments:
BILINGUAL
Format
Details
Price (USD)
PDF
Single User
$317.00
Print
In Stock
$317.00
Add to Cart

People Also Bought These:

ANSI A39.1
ANSI A1264.2
ASME A120.1
ANSI/IWCA I-14.1

Product Details:

  • Revision: 3rd Edition, December 1, 2014
  • Published Date: December 2014
  • Status: Active, Most Current
  • Document Language: English, French
  • Published By: International Electrotechnical Commission (IEC)
  • Page Count: 114
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This part of IEC 60118 is applicable to audio-frequency induction-loop systems producing an alternating magnetic field at audio frequencies and intended to provide an input signal for hearing aids operating with an induction pick-up coil (telecoil). Throughout this standard, it is assumed that the hearing aids used with it conform to all relevant parts of IEC 60118.

This standard specifies requirements for the field strength in audio-frequency induction loops for hearing aid purposes, which will give adequate signal-to-noise ratio without overloading the hearing aid. The standard also specifies the minimum frequency response requirements for acceptable intelligibility.

Methods for measuring the magnetic field strength are specified, and information is given on appropriate measuring equipment (see Annex B), information that should be provided to the operator and users of the system (see Annex C), and other important considerations.

This standard does not specify requirements for loop driver amplifiers or associated microphone or audio signal sources, which are dealt with in IEC 62489-1, or for the field strength produced by equipment, such as telephone handsets, within the scope of ITU-T P.370.