| Zugriffsnummer | 20780 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Implementation and evaluation of a measurement procedure for the acoustical transfer impedance of ear simulators |
| Autor(in); Institution |
Fedtke, Thomas; 1.6, Schall, PTB-Braunschweig
|
| Quelle/Jahr | Acoustics for the 21st century. Revista de Acustica: 38 (2007), 3/4 |
| Availability | [CD-ROM] ; file name: ICA_07 |
| Herausgeber(in) |
Calvo-Manzano, Antonio
|
| ISSN | 0210-3680 |
| ISBN | 84-87985-12-2 |
| Verlag | Madrid: Sociedad Espanola de Acustica |
| Konferenzangaben | 19th International Congress on Acoustics, Madrid, 02-07, September, 2007, Spain |
| Klassifikationscode | PACS: 43.58.-e |
| Zusammenfassung | The testing of hearing ability is based on mean threshold sound pressure levels which are determined by means of psychoacoustic measurements under reference conditions with young otologically normal test objects. The dissemination of these levels uses the concept of Reference Equivalent Threshold Sound Pressure Levels (RETSPLs). They are specified as the output sound pressure level produced by a specific audiometric earphone which is driven with exactly the same excitation signal as needed to resach the mean hearing threshold of the reference test subjects on an ear simulator, e.g. according to IEC 60318-1. A periodic test of the ear simulators is required for a traceable calibration of audiometers. The main test criterion is the conformance woth the specification of the ear simulators' acoustical transfer impedance given in the IEC standard. The recent version of IEC 60318-1, however, neither specifies tolerances nor gives a measurement procedure for the acoustical transfer impedance. Currently, the standard is under revision, aiming at the inclusion of those specifications. This paper reports on the implementation and evaluation of a direct measurement procedure for the acoustical transfer impedance of ear simulators in the PTB. |
