Skull distortion of bone conducted signals.
Skull distortion of bone conducted signals.
复制标题
骨传导信号的颅骨变形。
DOI：
10.3109/00016487809121457
复制
发表时间：
1978
影响因子：
1.4
通讯作者：
H. Hellqvist
中科院分区：
文献类型：
--
作者：
S. Arlinger;P. Kylén;H. Hellqvist
一种以前基本上未知类型的失真的骨传导（BC）信号已被研究的头骨上的四个人的尸体。该方法是基于一个微型加速度计，刚性连接到颅骨，将颅骨振动接近耳蜗转换成电信号，分析谐波失真。BC信号，纯音，是通过一个高品质的振动器。发现失真限于较低的测听频率，最大值约为500 Hz，并且达到能够显著影响BC测听结果的程度。这种变形可能是由颅骨的非线性力学特性引起的。
A previously essentially unknown type of distortion of bone conduction (BC) signal has been studied on the skulls of four human cadavers. The method was based on a miniature accelerometer, rigidly attached to the cranial bone, converting the skull vibration close to the cochlea into an electrical signal which was analysed with regard to harmonic distortion. The BC signals, pure tones, were presented by means of a high-quality vibrator. The distortion was found to be limited to the lower audiometric frequencies, with a maximum around 500 Hz, and of such a degree as to be able to significantly influence the results of BC audiometry. The distortion is probably caused by nonlinear mechanical properties of the human skull.