Nokes L, Mintowt-Czyz W J, Mackie I, Fairclough J A, Williams J
J Biomed Eng. 1984 Jan;6(1):45-8. doi: 10.1016/0141-5425(84)90009-8.
The natural frequency of in vivo mechanical systems has been derived in the past by signal conditioning techniques. For the living tibia the accuracy of this derived method was not validated. In addition the use of Fast Fourier Transform is time consuming, tedious and expensive. Direct measurement yields results which are more accurate, more easily obtained, and more clinically applicable.
过去，体内机械系统的固有频率是通过信号调节技术推导出来的。对于活体胫骨，这种推导方法的准确性尚未得到验证。此外，使用快速傅里叶变换既耗时、繁琐又昂贵。直接测量产生的结果更准确、更容易获得且在临床上更具适用性。
