Author Archives: hamilton@mail.utexas.edu

Large-Scale Acoustic Array Processing

date February 13, 2015
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Friday, February 13, 2015 4:00pm in ETC 4.150 Dr. Mark Lai The Institute for Computational Engineering and Sciences The University of Texas at Austin Consider a sensing system using a large number of N microphones […]

Generation and Refraction of the Microbarom Signal by Hurricanes over the Atlantic Ocean

date February 6, 2015
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Friday, February 6, 2015 4:00pm in ETC 4.150 Dr. Roger Waxler National Center for Physical Acoustics The University of Mississippi http://www.olemiss.edu/depts/physics_and_astronomy/faculty/waxler.html It is well known that both acoustic and seismic noise spectra show an increased band […]

Laboratory Experiments on Sound Propagation in a Continuously Stratified Ocean Containing Internal Gravity Waves

date January 30, 2015
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Friday, January 30, 2015 4:00pm in ETC 4.150 Dr. Likun Zhang Center for Nonlinear Dynamics The University of Texas at Austin http://chaos.utexas.edu/people/post-docs/likun-zhang The speed of sound in the ocean varies with temperature, salinity, and pressure […]

A Brief History of Sediment Acoustics

date December 5, 2014
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Friday, December 5, 2014 4:00 p.m. ETC 4.150 Anthony L. Bonomo Applied Research Laboratories The University of Texas at Austin http://www.arlut.utexas.edu The acoustic behavior of sediments has been studied extensively. The earliest models were based […]

Analysis of Acoustic Scattering from Large Fish Schools Using Bloch Wave Formalism

date December 3, 2014
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Wednesday, December 3, 2014 4:00 p.m. ARL A009 Jason A. Kulpe George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology http://www.me.gatech.edu In the open ocean, acoustic scattering of SONAR signals in the 1-10 […]

Biologically Inspired Microphones

date November 21, 2014
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Friday, November 21, 2014 4:00 p.m. ETC 4.150 Professor Neal A. Hall Department of Electrical and Computer Engineering The University of Texas at Austin https://sites.google.com/site/utacousticmems The parasitoid fly Ormia Ochracea has the remarkable ability to […]

Electro-Mechanical Modeling of Piezoelectric Fluid Ejectors for High Viscosity Liquids

date November 14, 2014
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Friday, November 14, 2014 4:00 p.m. ETC 4.150 Dr. Drew Loney George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology http://www.me.gatech.edu The controlled atomization of high viscosity liquids to produce individual droplets of […]

Design and Construction of Acoustic Test Chambers

date November 7, 2014
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Friday, November 7, 2014 4:00 p.m. ETC 4.150 Dr. Douglas F. Winker ETS-Lindgren Cedar Park, Texas http://www.ets-lindgren.com ETS-Lindgren manufactures acoustic test chambers for a wide variety of clients and applications. This presentation will discuss case […]

Seismic Attenuation, Dispersion and Anisotropy in Porous Rocks: Mechanisms and Models

date November 3, 2014
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Monday, November 3, 2014 1:30 p.m. ARL Auditorium Dr. Boris Gurevich Curtin University and CSIRO Perth, Australia http://www.csiro.au Understanding and modelling of attenuation of elastic waves in fluid-saturated rocks is important for a range of […]

Submarine Sonar

date October 17, 2014
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Friday, October 17, 2014 4:00 p.m. ETC 2.136 Dr. F. Michael Pestorius Applied Research Laboratories The University of Texas at Austin http://www.arlut.utexas.edu Modern submarines use sonar almost exclusively for ship navigation, obstacle avoidance, contact detection […]

Snapping Acoustic Metamaterials: Enhanced Material Nonlinearity and Absorption of Mechanical Energy

date October 13, 2014
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Monday, October 13, 2014 3:00 p.m. ECJ 1.202 Dr. Michael R. Haberman Applied Research Laboratories and Department of Mechanical Engineering The University of Texas at Austin http://www.arlut.utexas.edu http://www.me.utexas.edu Acoustic metamaterials (AMM) are material systems whose […]

Modeling Sound Propagation Through an Incompressible Flow

date October 3, 2014
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Friday, October 3, 2014 4:00 p.m. ETC 4.150 Sumedh M. Joshi Center for Applied Mathematics Cornell University http://www.cam.cornell.edu Sound propagating in a moving fluid will be advected, refracted, and Doppler shifted by the patterns in […]

Statistical Inference of Seabed Sound-Speed Structure in the Gulf of Oman Basin

date September 26, 2014
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Friday, September 26, 2014 4:00 p.m. ETC 4.150 Dr. Jason D. Sagers Applied Research Laboratories The University of Texas at Austin http://www.arlut.utexas.edu Addressed is the statistical inference of the sound-speed depth profile of a thick […]

Acoustical Foundations of Scales, Tempered Tuning, and Pitch Perception

date September 19, 2014
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Friday, September 19, 2014 4:00 p.m. ETC 4.150 Dr. James M. Gelb Applied Research Laboratories The University of Texas at Austin http://www.arlut.utexas.edu While seemingly disparate, the musical scales used throughout the world are in fact […]

Shear Waves in Viscoelastic Wormlike Micellar Fluids

date September 15, 2014
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Monday, September 15, 2014 1:00 p.m. RLM 11.204 Professor Joseph R. Gladden Department of Physics National Center for Physical Acoustics The University of Mississippi ncpa.olemiss.edu In viscous Newtonian fluids, support of shear waves is limited […]

Estimates of Source Range Using Horizontal Multi-path in Continental Shelf Environments

date September 5, 2014
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Friday, September 5, 2014 4:00 p.m. ETC 4.150 Dr. Megan S. Ballard Applied Research Laboratories The University of Texas at Austin www.arlut.utexas.edu A method has been developed to estimate source range in continental shelf environments […]

Measuring the Acoustic Parameters of Fish Schools

date April 25, 2014
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Friday, April 25, 2014 4:00 p.m. ETC 4.150 Craig Dolder Department of Mechanical Engineering Applied Research Laboratories The University of Texas at Austin http://www.arlut.utexas.edu While the literature contains extensive in situ measurements of scattering by […]

Large-scale Bayesian Inverse Wave Propagation

date April 18, 2014
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Friday, April 18, 2014 4:00 p.m. ETC 4.150 Professor Omar Ghattas Department of Mechanical Engineering and Department of Geological Sciences Director of the Center for Computational Geosciences Institute for Computational Engineering and Sciences The University […]

More than Imaging: Cancer and Cardiovascular Therapies via Focused Ultrasound

date April 8, 2014
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Tuesday, April 8, 2014 11:00 a.m. ETC 2.102 Dr. Linsey Phillips University of North Carolina at Chapel Hill & NC State University Cancer and cardiovascular disease are two of the most common diseases affecting industrialized […]

Bond Graph Modeling of Frog Vocal Production

date April 4, 2014
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Friday, April 4, 2014 4:00 p.m. ETC 4.150 Professor Nicole M. Kime Department of Biological Sciences Edgewood University http://biology.edgewood.edu The tĂșngara frog, Physalaemus pustulosus, is a well-known model for investigating the evolution of acoustic communication. […]