Abstract
The binaural free field hearing threshold for pure tones has been
measured for thirty-one otologically normal test subjects in the
age range 18 to 25 years. The frequencies were 0.125, 0.25, 0.5,
0.75, 1, 1.5, 2, 3, 4, 6, 8, 9, 10, 11.2, 12.5, 14 and 16 kHz. The
signal duration was 1 s measured between the half amplitude points
of the rise and fall course. The pure tone signals were generated
from disk files. The thresholds were determined with the
Bracketing Method (ISO 8253-1) using a step size of 5 dB. The
results are in good agreement with ISO 389-7 and with other recent
determinations of the free field hearing threshold. At 1500 Hz a
small local peak in the threshold is seen which is not reflected
in the present standards.PACS 43.66 Cb; 43.66 Pn
| Original language | English |
|---|---|
| Journal | ACUSTICA Acta-Acustica |
| Volume | 86 |
| Pages (from-to) | 333-337 |
| Publication status | Published - 2000 |