As in-person scientific meetings and gathering have been replaced by virtual meetings during the pandemic, students and young professionals are seeing career fairs and networking events transition into remote experiences that simply lack the same impact as getting together.
In her presentation, "Aging effects on listening effort in cochlear-implant users," Kristina DeRoy Milvae will discuss the results of two experiments that examined impacts on listening effort. The session will take place May 24 at 12:50 p.m. Eastern U.S. at the 182nd Meeting of the Acoustical Society of America at the Sheraton Denver Downtown Hotel.
Everyone has an accent. But the intelligibility of speech doesn't just depend on that accent; it also depends on the listener. Visual cues and the diversity of the listener's social network can impact their ability to understand and transcribe sentences after listening to the spoken word.
Naomi Matsuura, of the University of Toronto, and her team are adapting microbubbles to become more potent tools for cancer therapy. By shrinking the bubbles and directly loading them with anti-cancer drugs, the bubbles can lower the dose of free drug that is injected and diffuses into nontumor tissue in the body. This results in more targeted treatment and fewer side effects for the patient. Matsuura will discuss her team's results in her presentation, "Ultrasound-stimulated, drug-loaded bubbles for cancer therapy," as part of the 182nd Meeting of the Acoustical Society of America at the Sheraton Denver Downtown Hotel. The session will take place May 24 at 11:30 a.m. Eastern U.S.
As part of the 182nd ASA Meeting, Luisa Still, of Sensor Data and Information Fusion, will discuss the important factors in determining shooter localization accuracy. In an urban setting, buildings or other obstacles can reflect, refract, and absorb sound waves, which can severely impact said accuracy. Preemptively predicting this is crucial for mission planning in urban environments. Still and her team used geometric considerations to model acoustic sensor measurements. This modeling, combined with information on sensor characteristics, the sensor-to-shooter geometry, and the urban environment, allowed them to calculate a prediction of localization accuracy.
As the size and number of acoustic datasets increase, accurately and quickly matching the bioacoustics signals to their corresponding sources becomes more challenging and important. This is especially difficult in noisy, natural acoustic environments. At the 182nd ASA Meeting, Elizabeth Ferguson, from Ocean Science Analytics, will describe how DeepSqueak, a deep learning tool, can classify underwater acoustic signals. It uses deep neural network image recognition and classification methods to determine the important features within spectrograms, then match those features to specific sources.
Raceways can produce noise from many kinds of vehicles, such as race cars, street race cars, racing motorcycles, go-karts, monster trucks, and cheering spectators. During the 182nd ASA Meeting, Bonnie Schnitta, from SoundSense LLC, will discuss her efforts to reduce the noise in a Michigan neighborhood from a nearby raceway. She and her team examined several different types of barriers, including berms, acoustic barriers, or dense foliage, to block that noise from reaching surrounding houses and businesses.
Press conferences at the 182nd ASA Meeting will be held Tuesday, May 24, at the Sheraton Denver Downtown Hotel in Plaza Court 2. Media availabilities will focus on wide range of newsworthy sessions at the upcoming meeting from how racialized identities impact speech perception to the first sounds recorded from the Perseverance rover on Mars. To register for in-person attendance or for more information regarding the livestream, please email [email protected].
Echolocation, biomedicine, engineering, aquatics, and more will be showcased at the 182nd ASA Meeting in Denver, May 23-27. The in-person scientific conference brings together acoustical experts and researchers from around the world to talk about sound experiments and applications in fields as diverse as space exploration, sports, marine biology, cancer therapies, speech perceptions, and many other areas. Reporters are invited to attend the meeting at no cost and participate in a series of press conferences featuring a selection of newsworthy sessions.
Air trapped with ice below glacier surfaces becomes a compressed bubble-ice mixture that builds pressure during the long passage to the glacier terminus. The glacier ice holds ancient bubbles of air that can be up to 20 atmospheres of pressure and generate detectable sounds when they are released as the ice melts. Scientists can listen to the release of the air and potentially use the sounds to help them gauge the impact of climate change on the ice floes.
Killer whales will often travel to different areas to target varieties of prey. In a study including eight years of passive acoustic data, researchers monitored killer whale movements using acoustic tools, finding killer whales are spending more time than previously recorded in the Arctic Ocean, despite risks of ice entrapment there. Their readings indicate this change is directly following the decrease in sea ice in the area.
To demonstrate the power of focused vibrations, researchers use speaker shakers to generate vibrations in a plate. They place Lego minifigures on the plate, choose a target, and measure the impulse response between each shaker and the target location. Playing that very response from the shakers, but reversed in time, creates sound waves that constructively interfere at the target minifigure. The focused energy knocks over the single Lego minifig without disrupting the surrounding minifigs.
Researchers at Johns Hopkins APL team aim to create an ideal baby monitor that alerts parents when their baby needs attention but does not transmit or amplify sound from other sources. The project uses open-source audio processing hardware, originally intended for hearing aids, to filter out unwanted noises that may lead parents to turn down their baby monitor volume and potentially miss infant cries. They plan to keep babies' whole frequency range in mind as they explore signal processing options.
The Seattle Space Needle recently underwent a renovation to enhance the visitor experience, and acoustic designers were tasked with ensuring that the new design is a quiet one, incorporating designs targeted toward limiting unnecessary sound transmission and enhancing future visitor experience. They selected acoustic materials that complement the architectural concept for the spaces and provide effective reverberant sound control.
During pandemic-induced isolation, researchers from the University of Minnesota surveyed older adults with vision loss, with hearing loss, or without either condition, asking the participants about their worries, well-being, and social isolation at six-week intervals. All three groups scored lower on a patient health questionnaire after the pandemic began; however, people with vision or hearing loss faced unique problems in lockdown. Disruptions to mobility systems affected people with low vision, and masks made conversations especially difficult for adults with hearing loss.
Ocean predators cannot survive on average concentrations of food found in the water. Instead, they survive by exploiting small patches of food-rich areas peppered throughout the world's waterways. Using active acoustics, researchers found the ocean is widely populated with narrow hotspots of activity. Traditionally, these hotspots are missed with conventional sampling tools, but locating them can provide dynamic layered maps of ocean life. The findings signify ocean food and biota as patchy, varying with depth and location, suggesting animals must find and exploit small-scale aggregations of resources.
Researchers observed a professional soprano singing with and without six types of masks and found masks effectively block aerosols, forcing the breath to exit at the sides. From there, the aerosols travel upward, rising with the upward flow of body heat from the singer. At low frequencies, masks reduced volume but did not have other effects on the singing. However, masks did reduce the power of higher frequencies, which made the enunciation of words less clear and altered the timbre. Masks had no effect on the pitch.
Difficulty in understanding speech, especially in background noise, is a common concern for older adults. Using a word identification task in quiet and noisy conditions, researchers examined the impact of mild dementia on speech perception. They tested individuals with and without mild dementia and found that word identification scores of those without dementia were significantly better in all conditions, meaning people with mild dementia symptoms recalled fewer words in both quiet and noisy situations.
Techniques in neuroimaging and neurocomputational modeling are leading to a much better understanding of brain function during speech and how stuttering arises. Inside the brain, one circuit initiates the desired speech in the basal ganglia, while another circuit coordinates the muscles needed to generate the speech. Stuttering stems from the initiation of speech, so only the first of the two circuits is impaired. This theory matches behavioral observations of stuttering.
Bats use their acoustical abilities to create discrete echo snapshots and build representations of their environments, producing sounds for echolocation through contracting the larynx or clicking their tongues before analyzing the returning echoes. This acoustic information facilitates navigation and foraging, often in total darkness. Echo snapshots provide interrupted sensory information about target insect trajectory to build prediction models of prey location, and by amalgamating representations of prey echoes, bats can determine prey distance, size, shape, and density.
Converting newly emptied office spaces into podcast studios poses noise challenges not previously realized before hybrid offices began. Offices are less busy and less noisy, meaning recording spaces can be used more often, and newly empty private offices can become podcast studios. But existing spaces present multiple acoustic challenges -- single-glazed windows, nearby noise sources, and limited available surface area, to name a few. Experts recommend considering location, nearby noise sources, and ways to absorb sound to make a studio effective.
Electric vehicles are so quiet they can create a safety concern. To address this, many governments have mandated artificial sounds be added. In the U.S., regulations require vehicle sounds to be detectable at certain distances for various speeds, and researchers have tested how well people detect electric vehicle sounds in terms of these requirements. Participants in the study were seated adjacent to a lane of the test facility and pressed a button upon hearing an approaching electric vehicle. This allowed the researchers to measure the probability of detection versus distance from the vehicle.
Filtering and removing the microplastics from water is a difficult task, but acoustic waves may provide a solution. Researchers have developed a filtration prototype that uses two speakers to create acoustic waves. The force produced by the waves separates the microplastics from the water by creating pressure on a tube of inflowing water. As the tube splits into three channels, the microplastic particles are pressed toward the center as the clean water flows toward the two outer channels.
Researchers have developed microbubbles to acoustically detect blood oxygen levels, since the microbubble shells are altered by structural hemoglobin changes in response to oxygen. The gas filling of the microbubbles causes them to oscillate and vibrate when ultrasound is applied, scattering energy and generating an acoustic response that can be detected by a clinical ultrasound scanner. Preliminary results show a strong correlation between oxygen concentration and the acoustic bubble response.
Press conferences at the 181st Meeting of the Acoustical Society of America will be held Wednesday, Dec. 1, in room 505 at the Hyatt Regency Seattle. The media availabilities will focus on wide range of newsworthy sessions at the upcoming meeting from killer whales spending more time in the Arctic Ocean to knocking over Lego minifigures with time reversal focused vibration. For more information, contact AIP Media.
After more than a year of virtual conferences, the Acoustical Society of America (ASA) is holding its 181st meeting in person in Seattle, Washington, at the Hyatt Regency Seattle from Nov. 29 through Dec. 3. This major scientific conference brings together interdisciplinary groups of acoustics professionals, spanning many fields, including physics, medicine, music, psychology, wildlife biology, and engineering, to discuss the latest advancements. Follow conference highlights with social media hashtag #ASA181.
Evidence suggests auditory and vestibular effects should be added to the growing list of physiological impacts of COVID-19. During the 180th Meeting, Colleen Le Prell from the University of Texas at Dallas will talk about hearing and balance disorders associated with coronavirus infection and how pandemic-related stress and anxiety may aggravate tinnitus symptoms. Her presentation, "Hearing disorders secondary to infection with SARS-CoV-2," will take place Thursday, June 10.
As more people are taking advantage of music on the go, personal audio systems are pumping up the volume to the detriment of the listener's hearing. During the 180th ASA Meeting, Daniel Fink from The Quiet Coalition and Jan Mayes will talk about current research into personal audio system usage and the need for public health hearing conservation policies. Their session, "Personal audio system use can harm auditory health," will take place Thursday, June 10.
The prolonged impact of the COVID-19 pandemic created widespread lockdown fatigue and increased social tension in multiunit housing, but small improvements in quality-of-life routines may help people cope. During the 180th ASA Meeting, Braxton Boren from American University will discuss noise prevention techniques and the use of alterative acoustic stimulation to help those who find themselves in pandemic-related lockdowns. The session, "The Soundscape of Quarantine," will take place Wednesday, June 9.
In the battle between hunter and hunted, sound plays an integral part in success or failure. In the case of bats vs. moths, the insects are using acoustics against their winged foes. During the 180th ASA Meeting, Thomas Neil from the University of Bristol will discuss how moth wings have evolved in composition and structure to help them create anti-bat defenses. The session, "Moth wings are acoustic metamaterials," will take place Wednesday, June 9.
The world is filled with myriad sounds that can overwhelm a person with relentless acoustics. Noise is so prevalent in everyday life that the concept and achievement of comfortable quiet is hard to define. During the 180th ASA Meeting, Aggelos Tsaligopoulos from the University of the Aegean will describe how quiet could be measured in the hopes of better understanding its impact on people. The session, "Towards a new understanding of the concept of quietness," will take place Wednesday, June 9.
Designing a soundscape to improve quality of life for an individual is centered on putting their perception at the heart of the process. During the 180th ASA Meeting, Arezoo Talebzadeh from Ghent University will show how a personalized soundscape can help those with dementia by providing clues regarding time of day and place. The session, "Soundscape design for people with dementia; the correlation between psychoacoustic parameter and human perception," will take place Wednesday, June 9.
According to the World Health Organization, more than 264 million people worldwide have Major Depression Disorder and another 20 million have schizophrenia. During the 180th ASA Meeting, Carol Espy-Wilson from the University of Maryland,will discuss how a person's mental health status is reflected in the coordination of speech gestures. The keynote lecture, "Speech Acoustics and Mental Health Assessment," will take place Tuesday, June 8.
Many voice actors use a variety of speech vocalizations and patterns to create unique and memorable characters. How they create those amazing voices could help speech pathologists better understand the muscles involved for creating words and sounds. During the 180th ASA Meeting, Colette Feehan from Indiana University will talk about how voice actor performances can lead to better understanding about the speech muscles under our control. The session, "Articulatory and acoustic phonetics of voice actors," will take place Tuesday, June 8.
Due to strict lockdowns, many of us have seen and heard our family and neighbors much more than ever before. During the 180th ASA Meeting, Ayca Sentop Dümen and Konca Saher from the Turkish Acoustical Society will discuss the effects of pandemic-related noise on people's satisfaction with their homes and how this may inform future design choices. Their presentation, "Noise annoyance in dwellings during the first wave of Covid-19," will take place Tuesday, June 8.
The COVID-19 pandemic created numerous changes and challenges for many people. During the 180th ASA Meeting, Andrew Morrison from Joliet Junior College will reveal lessons learned by educators during remote teaching caused by the pandemic and what techniques they can use in the return to classroom instruction. The session, "Lessons learned teaching through a pandemic and looking forward to a post-COVID-19 classroom," will take place Tuesday, June 8.
Variations in children's speech has traditionally been attributed to developmental delays. Recent work suggests the reasons for variability are not so clear, and an immediate call for treatment may need to be reconsidered. During the 180th ASA Meeting, Margaret Cychosz from the University of Maryland will discuss the need to better understand these variations. Her presentation, "Reconsidering variability in child speech production," will take place Tuesday, June 8.
A better understanding of the impacts of face masks and shields on acoustic transmission in classrooms could help optimize educational settings. During the 180th ASA Meeting, Laura and Rich Ruhala from Kennesaw State University will talk about how various types of face coverings may affect students' understanding of their teacher. Their presentation, "Acoustical transmission of face coverings used to reduce coronavirus transmission in a classroom environment," will take place Tuesday, June 8.
Unmanned aerial vehicles may help emergency crews find those in need and provide situational awareness over a large area. During the 180th ASA Meeting, Macarena Varela from Fraunhofer FKIE will describe how a system using an array of microphones and advanced processing techniques could be a lifesaver for disaster victims. The session, "Bearing Estimation of Screams Using a Volumetric Microphone Array Mounted on a UAV," will take place Tuesday, June 8.
Press conferences at the 180th ASA Meeting will cover the latest in acoustical research during the Acoustics in Focus meeting. The virtual press conferences will take place each day of the meeting and offer reporters and outlets the opportunity to hear key presenters talk about their research. To ensure the safety of attendees, volunteers, and ASA staff, Acoustics in Focus will be hosted entirely online.
The 180th ASA Meeting, being held virtually June 8-10, will feature sessions on how the COVID-19 pandemic impacted hearing health, affected noise annoyance in urban settings, and adjusted how teachers talked and listened to their students. There will be presentations on how acoustics shapes speech in children, impacts mental health, and potentially signals health problems.
The Acoustical Society of America will hold its 180th meeting June 8-10. To ensure the safety of attendees, volunteers, and ASA staff, the June meeting, "Acoustics in Focus," will be hosted entirely online with new features to ensure an exciting experience for attendees. Reporters are invited to attend the meeting at no cost and participate in a series of virtual press conferences featuring a selection of newsworthy research.
The Acoustical Society of America is accepting submissions for its 2021 Science Communication Awards. Works should be intended for a general audience and will be judged on their ability to enhance the public’s understanding and appreciation of acoustics and related fields. The deadline for entries is April 1, 2021.
A lemony scent and light sounds could change the way you feel about yourself. Previously, researchers have shown that visual and tactile stimulation can change a person’s perception of their own body weight. Research being presented by Giada Brianza at the 179th ASA Meeting, has found our hearing and sense of smell can also change how we feel about our self-image, which could help improve healthy behaviors.
Though face masks are important and necessary for controlling the spread of the new coronavirus, they result in muffled speech and a loss of visual cues during communication. Sandie Keerstock, Rajka Smiljanic, and their colleagues examine how this loss of visual information impacts speech intelligibility and memory for native and nonnative speech. They will discuss these communication challenges and how to address them at the 179th ASA Meeting, Dec. 7-10
As restaurants get noisier, the increasing noise levels could deter older patrons, especially those with mild to severe hearing loss. Researchers from the University of Illinois at Urbana-Champaign will discuss their work on investigating acceptable noise levels that won’t cause restaurant visitors to stay away from certain establishments. Identifying acceptable noise levels helps establish truly “age-friendly” communities. The session will take place as part of the 179th ASA Meeting.
With each atom assigned a tonal signature based on its spectral signature, music can be a powerful tool for helping students understand atomic structure. Jill Linz is working toward synthesizing unique tones for each element to create an acoustic version of the periodic table. She will discuss her progress and the potential applications of the project at the 179th ASA Meeting, Dec. 7-10.
Listeners can extract a lot of information about a person from their acoustic speech signal. During the 179th ASA Meeting, Dec. 7-10, Tessa Bent, Emerson Wolff, and Jennifer Lentz will describe their study in which listeners were told to categorize 144 unique audio clips of monolingual English talkers into Midland, New York City, and Southern U.S. dialect regions, and Asian American, Black/African American, or white speakers.
Researchers have developed a method using ultrasound imaging to score a patient’s lung health, which may help predict if a patient with COVID-19 will worsen. Using 14 points in the lungs, they looked for abnormalities and assigned each spot a score out of 3 based on its severity. Adding up all the points, the researchers found the total lung ultrasound score was higher for those who had a worsening outcome of COVID-19. Umberto Sabatini’s presentation will be a part of the 179th ASA Meeting of the Acoustical Society of America.
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