Abstract
Ishmael is a user-friendly bioacoustic analysis tool for Windows. It includes displays of sound waveforms and spectrograms, recording capability for real-time input, several methods for acoustic localization, beamforming, several methods for automatic call detection, and a sound annotation facility. Ishmael is intended for users wishing to analyze large volumes of data quickly and easily. Ishmael’s capabilities for classification now include a feature-extraction module that implements noise-resistant acoustic characterizations based on Fristrup’s AcouStat system (Fristrup, Woods Hole Tech. Rept. WHOI-92-04, 1992). These features can be used as input to classifier(s) connected to Ishmael and implemented in Matlab. Examples of cetacean (odontocete and mysticete) sound feature extraction and classification will be shown.
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