A Simple Method for the Rapid Analysis of Animal Sounds

Authors


Department of Psychology, Duke University, Durham, North Carolina 27706, U.S.A.

Department of Zoology, Duke University, Durham, North Carolina 27706, U.S.A

Department of Bio-medical Engineering, Duke University, Durham, North Carolina 27706, U.S.A.

Department of Anesthesiology, Duke Medical Center, Durham, North Carolina 27710, U.S.A.

Abstract

A simple, real-time method for displaying the information contained in the zero-crossings of acoustic signals is described. The method can be used even with many signals that have harmonics, and reveals a wealth of fine structure in bird song. Some of this structure may serve a communicatory function.

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