Decraemer W F, Khanna S M, Funnell W R
Laboratory of Experimental Physics, University of Antwerp, Belgium.
Hear Res. 1990 Aug 15;47(3):205-17. doi: 10.1016/0378-5955(90)90152-f.
A heterodyne interferometer proved to be a very accurate tool to measure amplitude and phase of the malleus response during acoustical stimulation. It was shown that to obtain equal accuracy in the acoustical pressure measurements, pressure response must be remeasured at short time intervals. At frequencies above 4 kHz various gross resonances are apparent on the frequency response curves. The resonances are, depending on the animal, more or less pronounced. As a result of the improved accuracy changes of the malleus vibration response with time could clearly be discriminated. These changes can be related to shifts in frequency of the position of these resonances. Comparison of experimental frequency response and lumped parameter model predictions from literature shows that these resonances are not present in the model responses.
外差干涉仪被证明是一种非常精确的工具，用于测量声学刺激期间锤骨响应的幅度和相位。结果表明，为了在声压测量中获得同等精度，必须在短时间间隔内重新测量压力响应。在高于4 kHz的频率下，频率响应曲线上会出现各种明显的总体共振。这些共振在不同动物身上或多或少都很明显。由于精度的提高，锤骨振动响应随时间的变化能够清晰地辨别出来。这些变化可能与这些共振位置的频率偏移有关。将实验频率响应与文献中的集总参数模型预测进行比较表明，模型响应中不存在这些共振。
