Phase relationship between bone and air conducted impulse signals in the human head
作者:
E. H. J. F. Boezeman,
A. W. Bronkhorst,
T. S. Kapteyn,
A. Houffelaar,
A. M. Snel,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1984)
卷期:
Volume 76,
issue 1
页码: 111-115
ISSN:0001-4966
年代: 1984
DOI:10.1121/1.391105
出版商: Acoustical Society of America
数据来源: AIP
摘要:
Using the cancellation method we investigated the phase relationship as well as the amplitude ratio between impulse signals transmitted simultaneously via both bone and air conduction channels. The psychophysical findings indicated a phase difference corresponding to a time delay of about 0.9 ms by which the air input led the bone input in the case of frontal bone stimulation. Changing the polarity of the bone conduction signal a maximum in the loudness sensation was found just in the same phase difference. The psychophysical findings, predicted mathematically, were verified with brainstem evoked potentials elicited to similar signals. Preliminary results showed that the time lag observed relied on the location of the bone vibrator on the head and furthermore on the frequency used. This suggests different transmissions of vibratory energy reaching the inner ear along the skull.
点击下载:
PDF
(603KB)
返 回