An automated technique for analysis of temporal features in animal vocalizations

Abstract

An automated method is described for quantifying the variation in temporal pattern of the frequency components in animal vocalizations. The tape-recorded signals are electronically preprocessed to enable direct analysis by a digital computer. Several examples of temporal parameter analysis are shown for the mating call of a neotropical frog Eleutherodactylus coqui. The principal advantage of this technique is that it provides a continuous measurement combined with a statistical measure and fine temporal resolution.