To subscribe to the ORE seminar mailing list, click here.
For a (working draft) list of upcoming seminars, click here.
If you are interested in giving an ORE seminar, please contact us at nosal [at] hawaii [dot] edu.
- There are no upcoming events.
- There are no upcoming events.
detection
Latest Past Events
MS Plan A Defense: Detecting spinner dolphin (Stenella longirostris) clicks in noisy and low sampling rate hydrophone recordings
https://hawaii.zoom.us/j/97451743079Kei Manabe Master's Student Department of Ocean and Resources Engineering University of Hawaiʻi at Mānoa Zoom Meeting Link: Meeting ID: 974 5174 3079 Passcode: OREdefense https://hawaii.zoom.us/j/97451743079 Development of automated detection algorithms for cetacean vocalizations is important to facilitate marine mammal research. This thesis focuses on click train detection in cases in which sampling rates are too low to capture the full bandwidth of the clicks, and in which impulsive noise confounds current detection methods. We develop an algorithm to detect/classify odontocete click trains based on the regular timing of clicks; the method relies on the slowly- varying nature of Inter-Click
Seminar: Acoustics: From Cavitation to Detection in Clutter
Sakamaki B101 2530 Dole St, HonoluluJohn Allen, PhD Associate Professor Department of Mechanical Engineering University of Hawai’i, Mānoa Bubble dynamics and cavitation have had prominent roles in acoustics since Lord Rayleigh's pioneering work noise from ship propellers. Ocean applications are highlighted with respect to ambient noise produced from snapping shrimp off the coast of Hawaii. Snapping shrimp produce sounds by closing an enlarged claw rapidly, creating a cavitation bubble with a water jet. Snapping shrimp sound production has not been previously measured in natural environments with recording levels commensurate with the transient nature of the cavitation bubble sound. Previous field studies have investigated time averaged