Bennett W R
Department of Applied Physics, Yale University, New Haven, Connecticut 06520-8284, USA.
J Acoust Soc Am. 1998 Apr;103(4):2111-6. doi: 10.1121/1.423111.
A hearing aid patented by C. R. Schafer and supposedly based on detection of an amplitude-modulated carrier wave in the auditory cortex was re-examined. It is shown here that the hearing aid actually works by bone conduction of sound. It is concluded that detection of the modulation signal occurs by electrical nonlinearities and electrostriction in the bones of the face and skull.
对C.R. 谢弗（C. R. Schafer）获得专利的一款助听器进行了重新审视，该助听器据推测是基于对听觉皮层中调幅载波的检测。结果表明，这款助听器实际上是通过声音的骨传导起作用的。得出的结论是，调制信号的检测是通过面部和颅骨骨骼中的电非线性和电致伸缩实现的。
