Shyam&Madhusudhana& ChrisneErbe...
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►► CENTRE FOR MARINE SCIENCE AND TECHNOLOGY Shyam Madhusudhana Chris/ne Erbe Alexander Gavrilov THE 7TH INTERNATIONAL WORKSHOP ON DETECTION, CLASSIFICATION, LOCALIZATION, & DENSITY ESTIMATION 13 – 17 JULY, 2015. LA JOLLA, CA
Transcript of Shyam&Madhusudhana& ChrisneErbe...
►► CENTRE FOR MARINE SCIENCE AND TECHNOLOGY
Shyam Madhusudhana Chris/ne Erbe Alexander Gavrilov
THE 7TH INTERNATIONAL WORKSHOP ON DETECTION, CLASSIFICATION, LOCALIZATION, & DENSITY ESTIMATION
13 – 17 JULY, 2015. LA JOLLA, CA
►► CENTRE FOR MARINE SCIENCE AND TECHNOLOGY
¡ Current PAM trends & how this work differs ¡ Significance ¡ Challenges ¡ Expectations ¡ Solution Plan ¡ Current state of affairs
►► CENTRE FOR MARINE SCIENCE AND TECHNOLOGY
►► CENTRE FOR MARINE SCIENCE AND TECHNOLOGY
Marine Mammals
Snapping shrimp
Fish (type 1) chorus
Vessel noise
Fish (type 2) chorus
Mooring
Rain
Wind
►► CENTRE FOR MARINE SCIENCE AND TECHNOLOGY
Marine Mammals
Snapping shrimp
Fish (type 1) chorus
Vessel noise
Fish (type 2) chorus
Mooring
Rain
Wind
AUTOMATIC
CHARACTERISATION TOOL
Contributions separated by source type
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¡ Unified approach to acoustic monitoring ¡ Environmental impact assessments
§ Before and after conditions § Risk of masking
¡ Observe ecosystem dynamics ¡ Archival data – historical perspective ¡ Cues to effects of climate change
►► CENTRE FOR MARINE SCIENCE AND TECHNOLOGY
¡ Huge Repertoire § sounds of interest (how would you define noise?) § detection/classification/recognition methods
¡ Variations § source behaviour § channel effects
¡ Unknown sounds & sounds previously not encountered
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¡ Robustness § varying interference levels § vocalization variations
¡ Flexibility § varying data collection methods
¡ Adaptability § recording sites
¡ Throughput § near real-‐time speeds
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Hidden Markov Models
Spectrogram Correlation
Dynamic Time Warping
Neural Networks
Discriminant Function Analysis
Teager-Kaiser Energy Operator
Matched Filters
Cepstral Features
Gaussian Mixture Models
Spectral Analysis
Hilbert-Huang Transform
Spectrogram Edge Detection Classification & Regression Trees
Wavelet Transforms
Entropy Analysis
Rule-based Classifiers
Group Delay Function
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Context - big & small
Detect, then classify …
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¡ Tonal Narrowband signals ¡ Continuous Broadband signals ¡ Very-‐short duration signals
Antarctic Blue Whale Earthquake (Boxing Day) Sperm Whale Clicks
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* Madhusudhana et al., J. Acoust. Soc. Am. 137 (2015)
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¡ Questions?
