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Across Acoustics

ASA Publications' Office

82 episodes

2 weeks ago

In an effort to develop renewable energy, scientists have turned to the sun, the wind, and now the ocean. With these new forms of energy harvesting, considerations need to be made about how the new technologies will impact the surrounding environments. In this episode, we talk with Joseph Haxel (Pacific Northwest National Laboratory), Christopher Bassett (University of Washington), Brian Polagye (University of Washington), and Kaus Raghukumar (Integral Consulting) about their research related...

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All content for Across Acoustics is the property of ASA Publications' Office and is served directly from their servers with no modification, redirects, or rehosting. The podcast is not affiliated with or endorsed by Podjoint in any way.

In an effort to develop renewable energy, scientists have turned to the sun, the wind, and now the ocean. With these new forms of energy harvesting, considerations need to be made about how the new technologies will impact the surrounding environments. In this episode, we talk with Joseph Haxel (Pacific Northwest National Laboratory), Christopher Bassett (University of Washington), Brian Polagye (University of Washington), and Kaus Raghukumar (Integral Consulting) about their research related...

Show more...

Episodes (20/82)

Across Acoustics

The Acoustic Impacts of Marine Energy Converters

In an effort to develop renewable energy, scientists have turned to the sun, the wind, and now the ocean. With these new forms of energy harvesting, considerations need to be made about how the new technologies will impact the surrounding environments. In this episode, we talk with Joseph Haxel (Pacific Northwest National Laboratory), Christopher Bassett (University of Washington), Brian Polagye (University of Washington), and Kaus Raghukumar (Integral Consulting) about their research related...

2 weeks ago

52 minutes

Across Acoustics

Advances in Soundscape

A lot has changed in the twelve years since JASA's first special issue on soundscape research. This episode, we talk to the editors of the recent special issue on Advances in Soundscape: Emerging Trends and Challenges in Research and Practice, Francesco Aletta (University College London), Cynthia Tarlao (McGill University), Tin Oberman (University College London), and Andrew Mitchell (University College London), to discuss these changes, which range from developments in understanding in...

1 month ago

50 minutes

Across Acoustics

A New Way to Diagnose Osteoporosis

Ultrasonic tomography has been applied in many fields, from geophysics to engineering, and now to medicine. In this episode, we talk with Aaron Chung-Jukko and Peter Huthwaite (Imperial College London) about their work to develop an ultrasonic tomography algorithm that can be used to assess fracture risk in bones, and, as a result, be used as a noninvasive way to diagnose osteoporosis. Associated paper: - Aaron Chung-Jukko and Peter Huthwaite. "Virtual initialised ray tomography: Towards co...

1 month ago

28 minutes

Across Acoustics

Iconicity and Sound Symbolism

For a long time, it was believed that words were mostly arbitrary symbols. However, with advances in our ability to study speech, it has become clear that we must reconsider the fundamental relationship between words' sounds and their meanings. In this episode, we talk to two of the editors of the Special Issue on Iconicity and Sound Symbolism, Aleksandra Ćwiek and Susanne Fuchs (Leibniz-Centre General Linguistics), about research in the issue that examined these connections. Read all...

2 months ago

1 hour 13 minutes

Across Acoustics

Reproducing Soundscapes with the AudioDome

Recreating the natural hearing experience has long challenged researchers who study auditory perception. Recently, ambisonic panning has been developed as a method to accurately reproduce soundscapes. In this episode, we talk with Nima Zargarnezhad and Ingrid Johnsrude (Western University) about their research testing the accuracy of the "AudioDome," a device that using ambisonic panning to simulate soundscapes in the lab. Associated paper: - Nima Zargarnezhad, Bruno Mesquita, Ewan A Macphers...

3 months ago

31 minutes

Across Acoustics

An Archeoacoustic Look at Two Hindu Temples

Much of the research into the historical acoustics of worship spaces has focused on Christian churches or Islamic mosques. However, little is known about the acoustic history of Hindu worship spaces, despite Hinduism being the third largest religion in the world. Shashank Aswathanarayana and Braxton Boren (American University) share their efforts to fill this knowledge gap by studying the acoustics in Hindu temples from the 8th and 15th centuries. Associated paper: Shashank Aswathanar...

4 months ago

21 minutes

Across Acoustics

Student Paper Competition: Environmentally Friendly Acoustic Design, Spatial Impulse Response Measurements, and Acoustic Spectrometers

This episode showcases the latest winners of the POMA Student Paper Competition: First, Jonathan Michael Broyles (University of Colorado, Boulder) discusses his database to help acoustical consultants design more environmentally friendly spaces. Next, John Latta (University of Nebraska - Lincoln) shares his work regarding spatial impulse response measurements. Finally, Michelle Ruth Crouse (California State University, Dominguez Hills) talks about the acoustic spectrometer she created using o...

5 months ago

40 minutes

Across Acoustics

Large Venue Acoustics

Large venues like amphitheaters and stadiums are used across the world for a variety of purposes, hosting everything from sporting events to concerts to large social gatherings and other events. The massive size of the spaces, alongside their multifaceted uses, however, mean their acoustic needs are quite different from those of smaller rooms or even concert halls. This episode, Gary W. Siebein (Siebein Associates, Inc.), Keely Siebein (Siebein Associates, Inc.), Jack Wrightson (Wrightson, Jo...

6 months ago

55 minutes

Across Acoustics

Things That Go Boom

In this episode, we explore things that go boom: from volcanic eruptions to underwater ordinances to the (relatively) tiny explosions of gunshots. Thomas Blanford (University of New Hampshire) joins us as a cohost as we discuss the use of high-amplitude acoustic sources in research with three members of a special session on the topic from the Ottawa ASA meeting: Steve Beck (Beck Audio Forensics), Daniel Bowman (Pacific Northwest National Laboratories), and Andrew McNeese (University of Texas ...

6 months ago

51 minutes

Across Acoustics

Show Your Scattering Coefficients

The phenomenon of acoustic scattering, when a sound wave bounces off a surface and is redirected in different directions because of the surface texture, has been recognized since ancient Greece. Accounting for acoustic scattering when designing a built space, however, can be tricky. In this episode, we speak with Michael Vorländer (RWTH Aachen University) about his work to develop a general guideline for estimating the effects of acoustic scattering from a given surface. Associated paper: Mic...

8 months ago

38 minutes

Across Acoustics

Reducing Shipping Noise for Fatter, Happier Marine Mammals

Human-made noise from shipping is an ongoing problem for aquatic life. However, actually implementing measures to reduce noise can be costly and time consuming-- a risk many ship makers don't want to take without knowing how effective those methods will be. In this episode, we talk with Vanessa M. ZoBell (Scripps Institution of Oceanography) about her research that simulates the impacts of various strategies, with hopes for finding the most effective methods to improve the lives of our underw...

9 months ago

23 minutes

Across Acoustics

Acoustic Levitation and Trapping

Acoustic levitation allows objects to be suspended in air or in liquids without falling. In this episode, we speak with Philip Marston (Washington State University) about the history of acoustic levitation, and his work to translate previous research into terminology more accessible to modern readers and those outside of the field of physics. Associated papers:- Philip L. Marston. "Trapping in acoustic standing waves: Effect of liquid drop compressibility." J. Acoust. Soc. Am. 154, R5–R6 (202...

10 months ago

16 minutes

Across Acoustics

Student Paper Competition: Modeling Trumpets and Falcon 9 Flyback Noise

This episode is part two of our interviews with the POMA student paper winners from our meeting in Ottawa. First, we talk with Miranda Jackson (McGill University) about her research regarding modeling the mouthpiece and bells of brass instruments. Next, Mark C. Anderson (Brigham Young University) talks about the noise created by the Falcon 9 boosters as they fly back to Earth and the impact that noise can have on surrounding communities. Associated papers:- Miranda Jackson and Gary Scavone. "...

11 months ago

36 minutes

Across Acoustics

Student Paper Competition: A Small Ship-Like Structure, Underwater Micronavigation, and Rotorcraft Noise

This episode, we talk to a few of the latest round of POMA Student Paper Competition winners from the 186th ASA Meeting in Ottawa about their exciting research endeavors:- Using a small-scale ship-like structure to test noise mitigation techniques for shipping noise- Modeling spatial coherence in underwater sonar- Understanding the noise created by rotorcraftMake sure to keep an ear out for our next episode, which will include interviews with the remaining two winners!Associated papers:- Marc...

11 months ago

49 minutes

Across Acoustics

An Ultrasound-Based Touchscreen

Current touchscreen technology has its limitations. In this episode, we talk with Jérémy Moriot (Université de Sherbrooke) about his team's development of an ultrasound-based system that not only can work with various types of surfaces, but can also detect multiple touches at the same time. Associated paper: Maxime Bilodeau, Jérémy Moriot, Joëlle Fréchette-Viens Raphaël Bouchard, Philippe Boulais, Nicolas Quaegebeur, and Patrice Masson. "Embedded real-time ultrasound-based multi-touch sy...

1 year ago

20 minutes

Across Acoustics

Continuous Active Sonar's Impact on Killer Whales

When pulsed active sonar was found to cause mass strandings of whales, researchers turned to the quieter continuous active sonar for underwater monitoring. In this episode, Brian K. Branstetter (Naval Facilities Engineering Systems Command Pacific) shares his work to find out how this sonar affects killer whales. Associated paper: Brian K. Branstetter, Michael Felice, Todd Robeck, Marla M. Holt, and E. Elizabeth Henderson. "Masking in continuous sonar noise." J. Acoust. Soc. Am. 156 (2024). h...

1 year ago

13 minutes

Across Acoustics

How Classroom Acoustics Fail Autistic Students and Teachers

We know noisy classrooms and learning environments can negatively impact students and teachers. However, these problems can be compounded for those with autism. We talk to Carmen Rosas-Pérez (Heriot-Watt University) about her research to better understand the experiences of autistic people in daily life acoustic environments. Associated paper: Carmen Rosas-Pérez, Laurent Galbrun, Mary E. Stewart, and Sarah R. Payne. "How can anyone learn or teach? Experiences of autistic people with soun...

1 year ago

47 minutes

Across Acoustics

Can Sound Be Used to Diagnose Arteriosclerosis?

Because cardiovascular disease is the world's leading cause of death, researchers have been looking for ways to diagnose it early. Low-frequency sounds have been used to assess the elasticity of blood vessels, but until now, the elastic waves being studied were too fast to get precise measurements. Sibylle Gregoire (INSERM) discusses how here team has been able to image a different type of elastic wave, opening up the possibility to more precise assessments and diagnosis of cardiovascul...

1 year ago

20 minutes

Across Acoustics

Ultrasound Transducers for Measuring Martian Wind Speeds

We have yet to fully understand the wind on Mars, even though it transfers heat, momentum, and molecules from the surface. Traditionally, heat loss and motion detectors have been used to measure wind speeds. Robert D. White (Tufts University) discusses his team's work on ultrasound transducers that may offer a more precise way to measure turbulent eddies on the Red Planet.Associated paper: Robert D. White, Rishabh Chaudhary, Zijia Zhao, Luisa Chiesa, Ian Neeson, and Don Banfield. "Model...

1 year ago

14 minutes

Across Acoustics

Acousto-Optics: Sensing Sound with Light

In this episode, we dive into the world of acousto-optics, where light is used to visualize and measure sound-- particularly acoustic phenomena that are difficult to observe. Samuel Verburg (Technical University of Denmark) and Kenji Ishikawa (NTT Communication) share the history of this field of research, as well as discuss modern day applications and potential uses for acousto-optic sensing in the future. Read the associated article: Samuel A. Verburg, Kenji Ishikawa, Efren Fernandez-Grande...

1 year ago

19 minutes