Abstract
The sounds of animals surround us daily with a cacophony of chirps, tones, and squeaks. For some creatures, underlying this symphony is a great deal of structure and potentially a complex communications channel. As one of the more intelligent creatures, the sounds of dolphins are of particular interest for further examination. Typical dolphin sounds consist of a series of broad spectrum pulses overlayed on narrowband signals that vary in frequency over time. The research in this study applies a branching Kalman filter to track the frequency varying spectral lines. The generated tracks can then be analyzed for features of interest, common characteristics, and structure as an initial step in potentially creating a decoder key.
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