| Publication CODE |
Title |
| NBN EN 60118-15:2012 (2012-04) |
ELECTROACOUSTICS - HEARING AIDS
PART 15: METHODS FOR CHARACTERISING SIGNAL PROCESSING in HEARING AIDS WITH A SPEECH-LIKE SIGNAL |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
25.00 €
|
3 P. |
Description
Specifies a test signal designed to represent normal speech, the International Speech Test Signal (ISTS), together with the procedures and the requirements for measuring the characteristics of signal processing in air-conduction hearing aids. The measurements are used to derive the estimated insertion gain (EIG). For the purposes of characterizing a hearing aid for production, supply and delivery, the procedures and requirements to derive the coupler gain on a 2 cm3 coupler as defined in IEC 60318-5 are also specified.
The procedure uses a speech-like test signal and the hearing aid settings are set to those programmed for an individual end-user or those recommended by the manufacturer for a typical end-user for a range of flat, moderately sloping or steep sloping audiograms, so that the measured characteristics are comparable to those which may be obtained by a wearer at typical user settings.
The purpose of this standard is to ensure that the same measurements made on a hearing aid following the procedures described, and using equipment complying with these requirements, give substantially the same results.
Measurements of the characteristics of signal processing in hearing aids which apply nonlinear processing techniques are valid only for the test signal used. Measurements which require a different test signal or test conditions are outside the scope of this standard.
Conformance to the specifications in this standard is demonstrated only when the result of a measurement, extended by the actual expanded uncertainty of measurement of the testing laboratory, lies fully within the tolerances specified in this standard as given by the values given in 6.1.
Measurement methods that take into account the acoustic coupling of a hearing aid to the individual ear and the acoustic influence of the individual anatomical variations of an end-user on the acoustical performance of the hearing aid, known as real-ear measurements, are outside the scope of this particular standard.
|
| Class |
C93
(TELECOMMUNICATIONS - ELECTRONIC PASSIVE ELECTRONIC COMPONENTS AND OPTICAL FIBRES (SEE ALSO C90))
|
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.
Very important notice: 98% of the text of the NBN EN 55XXX,
NBN EN 6XXXX comes from the IEC text which is NOT included.
This text can be ordered here:
IEC 60118-15:2012.
For the series NBN EN 50XXX, the standards are however complete.
|
FR version
|
DE version
|
EN version
|
|
| Status |
Registered trilingual Belgian standard EN or FR or DE |
| Situation |
Currently active
|
|
| BEC Approval |
2012-03-27 |
| NBN Approval |
2012-06-29 |
| Belgian Official Journal |
2012-08-29 |
| Registration |
127565 |
| ICS-Code (International Standards Classification) |
17.140.50
|
| NBN Status |
New |
|
| Date of ratification (d.o.r.) |
2012-04-13 |
| Date of availability (d.a.v.) |
2012-04-13 |
| Date of announcement (d.o.a.) |
2012-06-27 |
| Date of publication (d.o.p.) |
2012-12-27 |
| Date of withdrawal former edition (d.o.w.) |
2015-03-27 |
|
