IEC 60118-4:2014+AMD1:2017 CSV-Electroacoustics - Hearing aids - Part 4 : (Record no. 16230)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02169nam a22001337a 4500 |
| 245 ## - TITLE STATEMENT | |
| Title | IEC 60118-4:2014+AMD1:2017 CSV-Electroacoustics - Hearing aids - Part 4 : |
| Sub Title | Induction-loop systems for hearing aid purposes - System performance requirements |
| 250 ## - EDITION STATEMENT | |
| Edition statement | 3.1 |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication | Geneva : |
| Name of publisher | International Electrotechnical Commission, |
| Year of publication | 2014. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 229 p. |
| 505 ## - FORMATTED CONTENTS NOTE | |
| Formatted contents note | IEC 60118-4:2014+A1:2017 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. This third edition cancels and replaces the second edition published in 2006. This edition constitutes a technical revision which includes the following significant technical changes with respect to the previous edition: Addition of Annexes G, H and I where more information is provided about practical considerations and methods of measurement. This consolidated version consists of the third edition (2012) and its amendment 1 (2017). Therefore, no need to order amendment in addition to this publication. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Electroacoustics |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Hearing aids |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Standards |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Date acquired | Total Checkouts | Accession Number | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|
| All India Institute of Speech and Hearing | All India Institute of Speech and Hearing | 22/06/2020 | ST017 | 22/06/2020 | 22/06/2020 | Standards |