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International Journal of Audiology Volume 50, 2011 - Issue 6
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Technical Report

Free-field correction values for Interacoustics DD 45 supra-aural audiometric earphones

Torben Poulsen Department of Electrical Engineering, Hearing Systems, Technical University of Denmark, Lyngby, DenmarkCorrespondence[email protected]
Pages 361-366 | Received 15 Jul 2010, Accepted 30 Dec 2010, Published online: 07 Feb 2011

References

  • Brinkmann K., Richter U. 1997. Ensuring reliability and comparability of speech audiometry in Germany. Speech Audiometry. M. Martin, Whurr Publishers: 106–130.
  • CCITT 1964. ITU-T Recommendation G.227. Conventional telephone signal. Geneva: International Telecommunication Union.
  • DIN 45626 1976. Sound carrier for the hearing tests using speech in accordance with DIN 45621 (recording 1969). Deutsche Institut für Norming.
  • Fedtke T. 2010. Test report. Determination of the difference between free-field and coupler sensitivity levels for an audiometric headphone. Report, Physikalish-Technische Bundesanstalt. Braunschweig.
  • IEC 60268-7 2009 (FDIS). Sound system equipment – Part 7: Headphones and earphones. Geneva: International Electrotechnical Commission.
  • IEC 60318-1 1998. Electroacoustics – Simulators of human head and ear – Part 1: Ear simulator for the calibration of supra-aural earphones. Geneva: International Electrotechnical Commission.
  • IEC 60318-3 1998. Electroacoustics – Simulators of human head and ear – Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry. Geneva: International Electrotechnical Commission.
  • IEC 60645-1 2001. Electroacoustics – Audiological equipment – Part 1: Pure-tone audiometers. Geneva: International Electrotechnical Commission.
  • ISO 389-9 2007. Acoustics – Reference zero for the calibration of audiometric equipment – Part 9: Preferred test conditions for the determination of reference hearing threshold levels. International Organization for Standardization, Geneva.
  • ISO 4869-3 2007. Acoustics – Hearing Protectors – Part 3: Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture. Geneva: International Organization for Standardization.
  • Poulsen T. 2010. Equivalent threshold sound pressure levels (ETSPL) for Interacoustics DD 45 supra-aural audiometric earphones. Int J Audiol, 49, 11, 850–855.
  • Richter U. 1992. Characteristic data of sound transducers used in audiometry. Report, PTB-MA-27, Physikalisch-Technische Bundesanstalt. Braunschweig.

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