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Exploring Marine Mammal Bioacoustics

Exploring Marine Mammal Bioacoustics. Overview of ongoing research and approaches Xanadu Halkias@LabRosa. Main Research. Natural Sciences. Engineering. Sound Processing. Sound Collection. Psych./Social Behavior. Biology. Effects of man made noise on marine mammals.

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Exploring Marine Mammal Bioacoustics

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  1. Exploring Marine Mammal Bioacoustics Overview of ongoing research and approaches Xanadu Halkias@LabRosa

  2. Main Research Natural Sciences Engineering Sound Processing Sound Collection Psych./Social Behavior Biology Effects of man made noise on marine mammals Classification/Detection Echolocation Localization What’s out there…

  3. The Data • Data obtained from Macaulay Library @ Cornell Lab of Ornithology (http://birds.cornell.edu/macaulaylibrary). • Approximately 27 hours of recordings accompanied by field notes (eg. time/duration, location, type of call, coordinates, species, recording medium information).

  4. More on the data…

  5. Approaches • Classification/Detection See David Mellinger (http://cetus.pmel.noaa.gov/mellinger.html) Identifying different vocalizations within a clip (eg. whistles, clips). Classifying different species. Approaches include contour similarity (CS) techniques(spectrum cross-correlations, kernel correlations). Also K-means on CS features for clustering types of calls. • Language See Brenda McCowan (http://faculty.vetmed.ucdavis.edu/faculty/bjmccowan) Exploring possible language model with the use of information theory

  6. The Next Steps • Copying/ripping 22 GB of data from CDs • Signal Denoising • Computing simple features (FFT, MFCC, pitch) • Replicating algorithms (contour similarity techniques) • Applying speech tools towards classification • Information theory: Language and behavior models

  7. References • Dave Mellinger: http://cetus.pmel.noaa.gov/mellinger.html • Chris Clark: http://www.birds.cornell.edu/brp/WhaleCommPublications.html • Brenda McCowan: http://faculty.vetmed.ucdavis.edu/faculty/bjmccowan/ • All of these links can be found here: http://www.ee.columbia.edu/~xanadu/research.html

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