Equivalent threshold sound pressure levels (ETSPL) for Sennheiser HDA 280 supra-aural audiometric earphones in the frequency range 125 Hz to 8000 Hz

Torben Poulsen, Sebastian Oakley

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Hearing threshold sound pressure levels were measured for the Sennheiser HDA 280 audiometric earphone. Hearing thresholds were measured for 25 normal hearing test subjects at the 11 audiometric test frequencies from 125 Hz to 8000 Hz. Sennheiser HDA 280 is a supra-aural earphone that may be seen as a substitute for the classical Telephonics TDH 39. The results are given as the Equivalent Threshold Sound Pressure Level, ETSPL, measured in an acoustic coupler specified in IEC 60318-3. The results are in good agreement with an independent investigation from PTB, Braunschweig, Germany. From acoustic laboratory measurements, ETSPL values are calculated for the ear simulator specified in IEC 60318-1. Fitting of earphone and coupler is discussed. The data may be used for a future update of the RETSPL standard for supra-aural audiometric earphones ISO 389-1.
Original languageEnglish
JournalInternational Journal of Audiology
Volume48
Issue number5
Pages (from-to)271-276
ISSN1499-2027
DOIs
Publication statusPublished - 2009

Keywords

  • HDA 280
  • Audiometry
  • ETSPL
  • Hearing threshold
  • Calibration

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