Publication details
| Publication CODE |
Title |
| NBN EN IEC 60318-8:2022 (2022-05) |
ELECTROACOUSTICS - SIMULATORS OF HUMAN HEAD AND EAR - PART 8: ACOUSTIC COUPLER FOR HIGH-FREQUENCY MEASUREMENTS OF HEARING AIDS AND EARPHONES COUPLED TO THE EAR BY MEANS OF EAR INSERTS |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
12.00 €
|
2. |
Description
IEC 60318-8:2022 describes an acoustic coupler for loading a hearing aid or insert earphone with a specified acoustic impedance when testing its acoustic performance, in the frequency range up to 16 kHz. It is suitable for air-conduction hearing aids and earphones, coupled to the ear by means of ear inserts, earmoulds or similar devices.
The acoustic coupler does not simulate the human ear. However, it has an effective volume of only 0,4 cm3, which is small enough not to produce significant resonances in the coupler in the frequency range below 16 kHz. Therefore, it will load the earphone with a known acoustic impedance, which allows repeatable measurements with low uncertainty to be obtained on earphones used in extended high-frequency audiometry.
|
| Class |
C
|
Available files
ATTENTION: Belgian registered standards (NBN EN or NBN HD) are generally
only available in English or French. Only the cover page is translated
and the document itself is in English or in French.
|
DE version
|
EN version
|
FR version
|
|
Status
| Status |
IEC PUBLICATION |
| Situation |
Currently active
|
|
Origin
| Committee |
CLC/SR 29
Electroacoustics
|
Approval
| BEC Approval |
2022-05-12 |
| NBN Approval |
2022-05-18 |
| NBN Status |
New |
|
| Date of ratification (d.o.r.) |
2022-05-12 |
| Date of announcement (d.o.a.) |
2022-08-12 |
| Date of publication (d.o.p.) |
2023-02-12 |
| Date of withdrawal former edition (d.o.w.) |
2025-05-12 |
| IEC file modification date |
2022-05-14 |
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