麻豆传媒

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The Acoustical Society of America and the International Commission on Acoustics are co-hosting a joint meeting May 18-23 in New Orleans, with in-person sessions throughout the week and livestreamed press conferences Tuesday, May 20. This conference brings together acoustics professionals to discuss the latest advancements from a variety of fields, including physics, medicine, music, psychology, wildlife biology, and engineering. Experts will present recent work on topics that include coral reef preservation, the sounds of pollinators and flowers, and identifying inert underwater explosives using acoustic scattering. Conference highlights can be found on social media by using the #ASA188 hashtag.

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Hongjun Lin from New York University will present results on the acoustic characteristics of a physical model of the Parasaurolophus鈥� crest as part of the virtual 187th ASA Meeting. Lin created a physical setup made of tubes to represent a mathematical model that will allow researchers to discover what was happening acoustically inside the crest.

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In a session of the 187th ASA Meeting, Michael Stocker of Ocean Conservation Research will present work examining the circumstances surrounding the whale deaths off the coast of New Jersey in the winter of 2022-23, which prompted concern that survey work in the area somehow contributed to their deaths.

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Bo偶ena Kostek from Gda艅sk University of Technology is exploring how speech-to-text programs can be better used in the medical field. By studying how clear speech affects STT accuracy, she hopes to improve its usefulness for health care professionals. A detailed audio dataset was created with Polish medical terms spoken by doctors and specialists in areas like cardiology and pulmonology. This dataset was analyzed using an Automatic Speech Recognition model for transcription, and several metrics were used to evaluate the quality of the speech recognition.

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Recent research by Joseph Vignola at the Catholic University of America is revolutionizing fresco assessment. Vignola and his team have applied laser Doppler vibrometry to locate delamination in the frescos of Constantino Brumidi in the U.S. Capitol building.

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In July 1982, researchers in New Zealand recorded unidentifiable sounds as a part of an experiment to characterize the soundscape of the South Fiji Basin. The sound consisted of four short bursts resembling a quack, which inspired the name of the sound 鈥淏io-Duck,鈥� and researchers came to a consensus that the sounds had to be biological. Ross Chapman will present his work analyzing the mystery sounds as part of the virtual 187th ASA Meeting, presenting the waveform and spectrum of the recordings, as well as further evidence that the work was a conversation between multiple animals.

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The pipe organ stands as a bastion in concert halls and church sanctuaries, and even when not in use, it affects the acoustical environment around it. Researchers performed a sine-sweep through loudspeakers facing the organ pipes and measured the response with a microphone at different positions. They verified experimentally that sympathetic resonance does occur in organ pipes during musical performances and speeches, and that the overall amplitude increases when the signal matches the resonance of one or more pipes.

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Research by Lixian Guo at the University of Canterbury may make it possible to keep electronic devices powered with another piece of equipment you鈥檙e likely to bring with you while exploring the great outdoors: camping stoves. Guo鈥檚 work focuses on using the excess heat produced by stoves to create a thermoacoustic engine, which converts thermal energy into acoustic energy.

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People with Alzheimer鈥檚 exhibit a loss of motor control along with cognitive decline, and one of the earliest signs of this decay can be spotted in involuntary eye movements known as saccades. These quick twitches of the eyes in Alzheimer鈥檚 patients are often slower, less accurate, or delayed compared to those in healthy individuals.

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The Acoustical Society of America will host two virtual press conferences Monday, Nov. 18. ASA鈥檚 187th meeting will be held online, and reporters are invited to join technical sessions Nov. 19-21. Media are invited to join the virtual press conferences for presentations on dinosaur acoustics, using camp stove waste for new outdoor power sources, predicting Alzheimer鈥檚 with in-ear microphones, and more.

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The Acoustical Society of America will host a virtual conference from Nov. 18-22.

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As communities are flooded with pickleball courts to satiate the hunger for the snack-named game, HOAs and city councils face litigation by those whose lives are disrupted by pickleball鈥檚 din. The sport is uniquely noisy due to the hard paddles and balls, and the popping sound the game produces is sharp and persistent. Charles Leahy used his legal expertise and mechanical engineering experience to investigate how communities respond to the pickleball problem. Leahy will present his findings and recommendations for limiting pickleball noise at the 186th ASA Meeting.

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Noise-canceling headphones automatically identify background sounds and cancel them out for much-needed peace and quiet. However, typical noise-canceling fails to distinguish between unwanted background sounds and crucial information, leaving headphone users unaware of their surroundings.

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At the Toronto Pearson International Airport, airplane traffic dropped by 80% in the first few months of lockdown during the COVID-19 pandemic., and in early 2020, the NVH-SQ Research Group out of the University of Windsor surveyed residents living around the airport to gauge how their annoyance levels changed with the reduction in noise.

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Sarcasm is notoriously tricky to convey through text, and the subtle changes in tone that convey sarcasm often confuse computer algorithms as well, limiting virtual assistants and content analysis tools.

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Researchers from Binghamton University investigated how spiders listen to their environments through webs and found that the webs match the acoustic particle velocity for a wide range of sound frequencies.

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Hockey players are famous for their distinctive jargon, but while researching this phenomenon, linguist and hockey player Andrew Bray realized another interesting pattern in hockey speech: American hockey players adopted aspects of Canadian English pronunciations.

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Pickups can be seen as the 鈥渉eart鈥� of the electric guitar, turning vibrations from the strings into electricity for sound. The details of how the pickup coil is wound has a significant impact on the resulting sound of the instrument, and variables such as the type and thickness of the wire, the winding pattern, the shape and size of the pickup, and even the type of magnets used can all influence the guitar鈥檚 sound.

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In the emperor penguin courtship call, male vocalizations are composed of long, slow bursts with lower frequency tones than the female version. But calls of SeaWorld San Diego male penguin E-79 defied this binary. Also unusual was this penguin鈥檚 male companion, E-81. The pair 鈥渒ept company鈥� and sometimes exhibited ritual courtship displays.

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At Image Creators salon in Maryland, employees and customers noticed they had to work hard to understand each other鈥檚 words, but they couldn鈥檛 put their finger on exactly why.