Articles tagged with Acoustics
A study by Trinity Consultants identifies effective means of controlling data center noise, including sound barriers and low-frequency resonators. The goal is to create a quieter breed of data centers that can coexist with residential areas, protecting residents from excessive noise.
Researchers from Brigham Young University and California State University, Bakersfield collected data on Falcon 9 rocket sonic booms to understand their impact. They found that the magnitude of sonic booms can vary greatly with weather conditions, launch time, vehicle trajectory, and time of year.
Researchers built a data pipeline to train AI tools for childhood speech screening, addressing the lack of representative datasets. The resulting high-quality dataset enables faster and more accurate diagnoses, especially in areas with limited access to specialists.
A team of researchers has found that sound waves can create standing waves in semi-open spaces, potentially enabling resonance in shapes with open sides. This discovery challenges the long-held assumption that resonance requires closed sides.
Scientists develop an ambisonic algorithm to simulate precise sound locations in 3D, reproducing sounds with high accuracy and precision. The AudioDome loudspeaker array achieves a spatial resolution comparable to human spatial acuity.
Researchers found significant bird song decline only where more than 99% solar obscuration occurred. The study used a novel neural network approach and controlled for human presence, revealing varied responses among different bird species.
Researchers at NCSA and UICOMP have created an improved, automated screening method for anxiety and depression disorders using machine learning and acoustic analysis of verbal fluency data. The new tool offers promise for overcoming barriers to diagnosis and treatment.
Researchers at EPFL have developed a novel acoustic system that can explore condensed matter and their macroscopic properties, circumventing the limitations of quantum phenomena. The system uses sound waves to model quantum probability waves, allowing for direct observation without perturbation.
A team of researchers developed an innovative acoustic method to detect hidden stones in coffee beans, preventing damage to grinding machines. The system uses empirical mode decomposition and field programmable gate arrays to identify stone presence with near-perfect accuracy.
The study found that the 'pop' sound is caused by sudden expansion of carbon dioxide and air mixture in the bottle, as well as a strong cooling effect, resulting in high decibel emissions. The liquid level rises after opening, causing sloshing due to momentum transfer from the lid hitting the glass.
A team of researchers at Tokyo University of Agriculture and Technology has developed a scaling model for transitional pressure development during acceleration. The study combines the incompressible and compressible flow theories to create a unified model that can be applied universally to various floors and liquid types.
Researchers have found evidence of songbirds forming social connections and potentially exchanging information about their migration routes through vocalizations. The study suggests that social cues play a significant role in shaping migration behaviors, particularly for young birds learning from observing other birds.
Researchers evaluated the noise impact of offshore wind farms on fishes and dolphins in the Pearl River Estuary. The study found that pile driving noise during construction can significantly affect marine animals, with predicted impact zones varying by species.
A 35,000-year-old ritual complex in the Manot Cave offers insight into the spiritual practices of Paleolithic hunter-gatherer groups. The discovery reveals evidence of human-made engravings, ash remains from fire, and acoustic tests that suggest a unique auditory experience for communal activities.
Researchers are developing a system to instantly conceal and anonymize voices through computer-generated speech. The technology will allow users to control factors like age, gender, and dialect in real-time conversations.
The Polymathic AI team has released two massive datasets for training artificial intelligence models to find and exploit transferable knowledge between seemingly disparate fields. The datasets include data from dozens of sources, covering astrophysics, biology, acoustics, chemistry, fluid dynamics, and more.
Researchers in New Zealand recorded repeating, quack-like sounds in the '80s that were likely a conversation between multiple animals. The sounds, known as Bio-Duck, have never been conclusively identified despite theories that they may be made by Antarctic Minke whales.
The study analyzes the impact of enunciation on speech-to-text accuracy in medical situations, highlighting challenges with medical terms and noisy environments. A new audio dataset was created to improve the technology's usefulness for healthcare professionals.
Researchers have created an acoustic model of the Parasaurolophus' crest, a unique feature of the duck-billed dinosaur. The model replicates the sounds produced by the crest, providing insights into the animal's communication and social behavior.
Researchers are revolutionizing fresco assessment with laser Doppler vibrometry, enabling the detection of hidden delaminated areas. This technology aims to democratize conservation expertise and create accessible tools for preserving these cultural treasures.
Researcher Ashley Snow found that pipe organs create an auto-tune effect through sympathetic resonance, enhancing the overall musical sound of ensembles. The study used a sine-sweep test to measure response with microphones inside and around the organ pipes during performances and services.
Scientists have created a thermoacoustic engine that converts thermal energy into acoustic energy, which can be transformed into mechanical or electrical energy. The device has the potential to generate power ranging from tens to thousands of watts and could be used for camping, backpacking, and emergency situations.
Researchers from École de Technologie Supérieure and Dartmouth University are investigating the use of earpiece microphones to spot early signs of Alzheimer’s. They aim to develop health-monitoring algorithms for hearables capable of continuous, long-term monitoring and early disease detection.
The Acoustical Society of America is hosting a virtual meeting from November 18-22, showcasing recent work on various topics including Alzheimer's disease detection and windfarms' impact on wildlife. Journalists can pre-register for press conferences and technical sessions.
A team of researchers has created a new sonic anemometer that can track wind speeds on Mars with remarkable precision and speed. The system uses sound pulses to measure wind direction and speed in three dimensions, providing valuable insights into the Martian climate and atmosphere.
A University of Washington team has developed an AI system called Target Speech Hearing that cancels all other sounds and plays the enrolled speaker's voice in real time. The system was tested on 21 subjects, who rated the clarity of the enrolled speaker's voice nearly twice as high as the unfiltered audio on average.
Researchers found spider webs match acoustic particle velocity for wide range of sound frequencies. Spider silk responds to air particles in a sound field, not just sound pressure, and may inspire new microphone designs.
Researchers developed a multimodal algorithm for improved sarcasm detection, examining multiple aspects of audio recordings for increased accuracy. The approach combines sentiment analysis using text and emotion recognition using audio for a comprehensive analysis.
A recent survey on aircraft noise and annoyance conducted during the pandemic era reveals flaws in existing methods to assess and mitigate noise impacts. The study suggests that annoyance levels are a proven correlation to overall noise levels, contradicting current industry practices.
Researchers developed AI-based headphones that selectively filter out specific sounds while preserving others. This technology uses a smartphone-based neural network trained to identify 20 different environmental sound categories, allowing users to choose what to hear.
Researchers found that electric guitar pickups generate an electric current through vibration of a magnetized string, affected by coil winding and variables like wire thickness and magnet type. This understanding enables guitarists to make informed pickup selections and adjustments.
Researchers analyzed the calls of two male emperor penguins, E-79 and E-81, and discovered a unique combination of masculine and feminine characteristics. This finding could lead to new methods for studying penguin behavior and assessing their reproductive state, which is crucial for conservation efforts.
Researchers found that flutists must compose unique songs to win love and respect among the tribe. The tradition's revival has led to a new generation of players, including the sons of leaders who helped maintain the tradition.
Acoustic experts reduce noise levels in a high-end salon, improving conversation ease and protecting employees' hearing. The successful solution can be applied to other salons, restaurants, stores, and conference centers to enhance clear communication and occupational safety.
Researchers evaluated the health of accidentally caught sea turtles using ultrasound imaging to monitor gas levels in their organs. Veterinarians found that ultrasound brightness could be used to differentiate gas levels over time, helping them predict treatment outcomes for bycaught sea turtles.
Researchers at the University of Arizona and Sandia National Laboratories have developed a new class of synthetic materials that enable giant nonlinear interactions between phonons. This breakthrough could lead to smaller, more efficient wireless devices, such as smartphones or other data transmitters.
A recent study conducted at the University of Zurich found that live performances stimulate a stronger emotional response in the brain compared to listening to recorded music. The researchers used magnetic resonance imaging to measure brain activity during both live and recorded music sessions, revealing a significant difference in amy...
Researchers developed novel algorithms to correct inertial navigation errors in underwater navigation, offering improved precision and reliability. The RMAN and VLBL algorithms leverage sparse acoustic beacon interactions to amend inertial navigation inaccuracies.
Researchers found significant increases in volatile compounds with ultrasound-assisted fermentation, simplifying the brewing process. The study's findings suggest a feasible approach to enhance the physicochemical properties and flavor of Chinese rice wine.
A new software algorithm intelligently combines vocals and instrumentals from different songs, mimicking professional music composition techniques. The result is a unique blend of pleasing lyrics and exciting instrumentals that appeal to listeners, particularly hip-hop fans.
Researchers Joe Wolfe and John Smith studied the didjeridu's performance techniques, finding that a player's vocal tract plays a significant role in producing unique sounds. By analyzing acoustic impedance spectra, they identified traits of expertly played didjeridus and explored advanced techniques used by musicians.
Researchers found that the key to bundengan sound quality is in its bamboo culm sheaths, which change shape when wet and vibrate together. The instrument's performance is improved when played in the rain, providing a unique acoustic experience.
The article discusses the importance of acoustic design in prison environments, where constant noise is harmful to both prisoners and staff. By incorporating speech intelligibility, strategic noise reduction, and privacy considerations, acoustic design can improve communication dynamics and alleviate negative social interactions.
Researchers have developed a wearable ultrasound system that can provide clinically relevant information about muscle function during dynamic physical activity. The device uses a patented approach to transmit long-duration chirps, allowing for real-time analysis of muscle dynamics and aiding in the rehabilitation process.
A team of researchers has created an audio feedback system that uses neuromorphic cameras and speaker arrays to provide real-time audio cues in three dimensions. The system enables blind players to track the ball and movements, allowing them to play table tennis with greater accuracy.
Researchers using acoustic imaging measure eye size and growth to better understand myopia's contributing factors. Education level, light stimulation, and outdoor time are found to correlate with the development of myopia. Current solutions like glasses and contacts are being replaced by eyedrops for children and collaborative efforts ...
Researchers have developed a needle-free ultrasound vaccine delivery technique that produces a higher immune response than traditional methods. By harnessing acoustic energy to clear passages and drive drug molecules into cells, the approach shows promise in reducing costs and increasing efficacy while minimizing risks.
Researchers created a unique dataset from flying discs, enabling students to learn basic signal processing tools and data visualization techniques. The experiment uses Doppler shift to determine velocity, providing valuable insights into acoustics.
Researchers found a unique resonance phenomenon in the crevice cave that amplifies and lengthens sound at a specific frequency, which may have impacted beliefs associated with it. The study suggests that this resonance could be an exceptional sound phenomenon for the people living in the region centuries ago.
A team led by Lehigh University's Yahong Rosa Zheng is developing an Autonomous Observatory Node that can collect and transmit data from underwater sensors wirelessly, without the need for expensive subsea cables. The prototype aims to operate at depths of up to 1000 meters, enabling researchers to study extreme environments and detect...
The PULSE project combines magnetic and acoustic levitation to bioprint highly sophisticated organoids that closely mimic human organs. These in vitro heart models will provide invaluable insights into cardiac physiology and pathology, enabling the development of preventive and therapeutic solutions.
Researchers at the University of Washington have developed an underwater 3D-positioning app for smart devices, allowing divers to accurately track each other's locations. The app uses acoustic signals and timestamps to estimate diver distances and locations, improving accuracy with more devices in the network.
A study found that multi-frequency ultrasonic thawing significantly improves pork quality by increasing water retention and reducing lipid oxidation. Thawing rates were reduced by up to 64.99% compared to conventional methods, resulting in better texture and flavor.
Acoustics researchers have decomposed sound into its three basic components, whistles, clicks, and hisses, using ideas from auditory perception, fuzzy logic, and perfect reconstruction. The new method emerges as the winning way to decompose most sounds in a listening test.
Researchers have developed a new technology that uses acoustic tweezers to precisely control bacterial clusters in live mice, demonstrating a promising approach for targeted drug delivery and cellular therapy in cancer treatment. The technology, called PAHAT, enables precise non-contact manipulation of cells in living organisms.
VIRTUOSO, developed by Dr. Hyunkook Lee from the University of Huddersfield's Applied Psychoacoustics Lab, enables immersive 3D audio without loudspeakers through binaural technology powered by ASPEN. This technology simulates the ambience and reflections found in a room with headphones, allowing for accurate translation to real speakers.
Researchers at Max Born Institute find that ultrafast mid-infrared excitation of electrons in bismuth reduces crystal symmetry, opening new quantum pathways for coherent phonon excitation. This leads to bidirectional atomic motions and oscillations with a frequency different from low-excitation levels.
A laboratory study found that exposure to background traffic noise, even at 40 dB, significantly impairs concentration and perceived workload. Researchers also highlight the difficulties in avoiding high-frequency noise indoors due to reduced vehicle speeds.
A longitudinal study using acoustic telemetry monitored rays in clam leases, finding that rays spent more time near sites than reported, but not necessarily preferring them. The study highlights the need to understand if clam leases are part of rays' natural foraging habitats and if they interact with the clams.
Researchers developed algorithms to analyze acoustic signals from fire hydrant-mounted hydrophones, pinpointing leaks in aging water distribution networks. This technology supports water conservation efforts, especially in the Western US where leaks are a significant issue.