Insert earphone depth and the occlusion effect.
Twenty individuals were tested to determine the occlusion effect caused by supraaural earphones and by insert earphones with shallow and deep insertion of its foam eartip. The bone-conduction oscillator was placed both on the forehead and the mastoid. It was concluded that using deeply inserted earphones is the most practical way in which to carry out clinical bone-conduction measurements.
Dean
M S
MS
University of Texas at Austin, USA.
Martin
F N
FN
D000328:Adult; D001299:Audiometry / Q000295:instrumentation*; D001309:Auditory Threshold; D001844:Bone Conduction; D004424:Ear Canal; D004867:Equipment Design; D005260:Female; D006801:Humans; D015203:Reproducibility of Results; D012683:Sensory Deprivation