Schott D
Z Tierpsychol. 1975 Oct;38(3):225-50. doi: 10.1111/j.1439-0310.1975.tb02002.x.
During experiments concerning the communication of squirrel monkeys, it proved to be necessary to construct an automatic apparatus for the identification of individual calls (MAURUS et al. 1970). The aim of this paper was to furnish the necessary data to achieve this (frequency, duration and the relationship of the intensity between the fundamental frequency and the overtones). 6120 calls from 19 animals were analysed and were subdivided into 52 call types. It was thereby shown: 1. That the vocal repertoire consists not of the discrete call types assumed up to now, but of graded ones; 2. that the animals could not be differentiated as individuals on the basis of the particular parameter of their calls. The distribution into 52 call types is not necessarily biologically significant. A final statement about the distribution of call types can be made only after the signal value of each call type has been determined.
在有关松鼠猴交流的实验过程中，事实证明有必要构建一种用于识别个体叫声的自动装置（毛鲁斯等人，1970年）。本文的目的是提供实现这一目标所需的数据（频率、持续时间以及基频与泛音之间的强度关系）。对19只动物的6120次叫声进行了分析，并将其细分为52种叫声类型。由此表明：1. 发声库并非由迄今为止所假定的离散叫声类型组成，而是由渐变的类型组成；2. 无法根据动物叫声的特定参数将它们作为个体区分开来。分为52种叫声类型不一定具有生物学意义。只有在确定了每种叫声类型的信号值之后，才能对叫声类型的分布做出最终说明。
