Menne D
Department of Zoology, National University of Singapore.
J Acoust Soc Am. 1988 Jun;83(6):2447-9. doi: 10.1121/1.396324.
A common feature of most bat echolocation calls is their hyperbolalike frequency modulation. It is proposed that these calls evolved as an adaptation to the filters in the peripheral hearing system. From an analysis of 420 echolocation sounds of Eptesicus fuscus, the bandwidths of filters giving a minimal error of time-delay estimation are predicted; these could be compared to neurophysiological findings.
大多数蝙蝠回声定位叫声的一个共同特征是它们类似双曲线的频率调制。有人提出，这些叫声是作为对外周听觉系统中滤波器的一种适应而进化出来的。通过对420种棕蝠的回声定位声音进行分析，预测了能给出最小延时估计误差的滤波器带宽；这些可以与神经生理学研究结果进行比较。
