Dörrscheidt G J
Int J Biomed Comput. 1978 Mar;9(2):127-35. doi: 10.1016/0020-7101(78)90004-1.
The paper describes a method of sound analysis, 'modulation analysis', its implementation on a minicomputer PDP12 and some aspects of its application in bioacoustical experiments. Modulation analysis reversibly resolves a given sound signal into time-courses of amplitude and carrier frequency. Since time is preserved as the independent variable the method provides a suitable basis for the computer modification of sounds. Problems of practical performance are discussed with regard to sounds of birds and insects. Further, the use of sound modification in a neurophysiological study of the hearing system of birds is described.
本文描述了一种声音分析方法——“调制分析”，及其在小型计算机PDP12上的实现，以及它在生物声学实验中的一些应用方面。调制分析可将给定的声音信号可逆地分解为幅度和载波频率的时间历程。由于时间作为自变量得以保留，该方法为声音的计算机修改提供了合适的基础。针对鸟类和昆虫的声音讨论了实际性能问题。此外，还描述了声音修改在鸟类听觉系统神经生理学研究中的应用。
