Scandinavian Audiology · 1981 · 29 citations · 3 references
Health ProfessionsAudiologyOtolaryngologyHearing AssessmentHearing ScienceOtologyAuditory ThresholdsBone-conduction TestingEar AnatomyHearing SensitivityHearing Threshold EstimationThreshold EstimationAudiometric Frequency RangeBone Conduction Frequency ResponseBone Conduction Threshold TestingBone Conduction Transducer PlacementEar-specific Bone Conduction MeasurementMasked Bone Conduction AudiometrySubjectsVibration Perception Thresholds
Threshold measurements with a Präcitronic KH 70 bone vibrator were carried out on 25 young, otologically normal subjects (50 ears) in the frequency range between 125 Hz and 8 000 Hz. The vibrator was applied to the human mastoid as well as to the forehead. The non-test ear was masked. Equivalent threshold force levels were determined on an artificial mastoid type B & K 4930. Between 125 Hz and 2 000 Hz, the equivalent threshold force levels for mastoid placement decrease steadily by about 13.5 dB/octave, they then increase again by about 10 dB and remain constant between 4 000 Hz and 8 000 Hz. The equivalent threshold force levels for forehead application were found to be higher by about 11 dB in the whole frequency range.
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An experimental study on the fundamental mechanism of bone conduction.
Bone Conduction Calibration: Current Status
Donold D. Dirks, Samuel F. Lybarger, Wayne O. Olsen et al. · Journal of Speech and Hearing Disorders · 1979 · 22 citations