The binaural free field hearing threshold for pure tones (the
minimum audible field, MAF) and Equivalent Threshold Sound
Pressure Levels (ETSPL) for the Sennheiser HDA 200 earphone and
the Etymotic Research ER-2 insert earphone have been determined
for thirty-one otologically normal test subjects in the age range
18 to 25 years. The frequencies were in the range 125 Hz to 16
kHz. MAF results are in good agreement with ISO 226 at frequencies
below 1 kHz and other recent determinations of the free field
hearing threshold at high frequencies. The ETSPL results for the
HDA 200 earphone are generally in very good agreement with the
results from other investigations. For ER-2 it has not been
possible to find other ETSPL determinations in the literature.
| Number of pages | 21 |
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| Publication status | Published - 1997 |
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