Peake W T, Rosowski J J
Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge.
Hear Res. 1991 May;53(1):1-6. doi: 10.1016/0378-5955(91)90208-q.
One way to assess an ear's performance as a receiver of acoustic power is to consider impedance matching at the tympanic membrane. Assumptions about some of the impedances involved have lead to the idea of an optimum velocity magnitude (per unit pressure), which has been used as a test of middle-ear performance. We show that this approach is not a realistic way to assess effectiveness of power absorption at the tympanic membrane. More generally, we suggest that, if the performance of the combined external-and-middle ear in collecting acoustic power and delivering it to the inner ear is considered, the external- and middle-ear power-transfer efficiencies, as well as impedance matching, are involved in relating performance to an ideal.
评估耳朵作为声能接收器性能的一种方法是考虑鼓膜处的阻抗匹配。对一些相关阻抗的假设导致了最佳速度幅值（每单位压力）的概念，该概念已被用作中耳性能的一项测试。我们表明，这种方法并非评估鼓膜处功率吸收有效性的现实途径。更一般地说，我们认为，如果考虑外耳和中耳在收集声能并将其传递到内耳方面的联合性能，那么外耳和中耳的功率传输效率以及阻抗匹配都与将性能与理想状态相关联有关。
