An incredibly light new material that can reduce aircraft engine noise and improve passenger comfort has been developed at the University of Bath. The graphene oxide-polyvinyl alcohol aerogel weighs just 2.1kg per cubic metre, making it the lightest sound insulation ever manufactured.
Using more than 3.4 million citizen scientist observations of 140 different bird species across the continental U.S., researchers found that common bird species avoided areas with excessive noise. In areas where light and noise pollution both occurred, many additional species avoided backyard feeders. Seasonal patterns and variation in the length of night also influenced how species respond to light pollution.
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, 2021.
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, 2021.
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.
Blue whales may be the biggest animals in the world, but they're also some of the hardest to find. A team of scientists led by UNSW Sydney are confident they've discovered a new population of pygmy blue whales, the smallest subspecies of blue whales, in the Indian Ocean. And it was the whales' powerful singing -- recorded by underwater bomb detectors -- that gave them away.
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.