Equivalent threshold sound pressure levels for Sennheiser HDA 200 earphone and Etymotic Research ER-2 insert earphone

  • Poulsen, Torben (Project Manager)

    Project Details


    Equivalent threshold sound pressure levels have been determined for the Sennheiser HDA 200 earphone and the Etymotic Research ER-2 insert earphone. Thirty-one young test subjects with normal hearing participated in the investigation, and the thresholds were determined at all recommended frequencies in the frequency range from 125 Hz to 16 kHz. The results determined with the HDA 200 earphone are generally in very good agreement with the results from the only two other investigations available at present. At 6 kHz a deviation of 9 dB has been found, and at 8 kHz a 6-dB deviation occurred between the three investigations. For ER-2 it has not been possible to find other results in the literature.
    The work is based on a MSc thesis by Loc A Han. A paper (Han and Poulsen) has been published in Scandinavian Audiology, vol 27, 1998.
    Effective start/end date01/01/199631/12/1998


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