Articles tagged with Acoustics
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.
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 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.
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.
A software program designed by Timothy G. Leighton predicts the environmental sounds of other planets and how human voices might change in distant worlds. The program uses acoustics and planetary science communities to learn about properties such as chemical composition, atmospheric temperature changes, and roughness of the ground.
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.
Researchers studied systematic variation in AAE speech production, including final consonant reduction, to prevent misdiagnosis of speech disorders. The study highlights the importance of accepting variation in human language without penalizing users.
Acoustic artist Colin Malloy transforms ocean data into captivating percussion songs, raising awareness about the impact of oil production on oceans. His music aims to encourage listeners to reflect on the issues surrounding oceans, leveraging the power of art to digest information on an emotional level.
Researchers found that humpback whales have a unique response to wind noise, singing louder in noisy conditions. In contrast, they do not exhibit an increased reaction to vessel noise from boats. This finding has implications for understanding whale behavior and potential consequences for breeding practices.
Researchers develop bio-inspired microphones that detect specific signals without consuming a lot of energy or requiring supervision. These miniature sensors are ideal for hazardous or hard-to-reach applications.
Scientists have successfully tracked fin whales using fibre-optic cables in the Norwegian Arctic archipelago of Svalbard. The system, called Distributed Acoustic Sensing (DAS), allows for simultaneous location and tracking of whales over an 1800 km² area with relatively low infrastructure investment.
Researchers found that people produce louder and slower speech with less pitch variation when communicating with AI systems, while clearer speech improves comprehension. The study aims to improve AI's ability to understand human speech and investigate language changes as technology advances.
Researchers developed a virtual framework to investigate the effectiveness of optoacoustic tomography for breast cancer screening in people with darker skin. The results confirmed that tumors can be harder to locate in individuals with darker skin, highlighting the need to optimize imaging systems to mitigate racial bias.
Researchers have found that hearing aid users are dissatisfied with the sound quality of music when using their hearing aids. However, some manufacturers' music programs have improved significantly. The team tested 200 recordings and found that two brands stood out in terms of music quality.
A study found that the coqui frog's calls have changed over a 23-year period due to rising temperatures, with higher-pitched calls at higher elevations. This shift may indicate a mini-migration of frogs up the mountain as temperatures increase, posing a threat to their survival.
Researchers created 3D-printed talking heads to simulate conversations and assess acoustic properties. The project aims to improve human hearing algorithms and develop more realistic listening experiences.
An analysis of popular song recordings from 1946 to 2020 found a significant decrease in the lead vocal to accompaniment ratio, indicating that lead singers are getting quieter. Changes in music technology appear to be behind this trend until 1975.
Researchers at Shinshu University developed a microfluidic device using acoustic focusing to collect microplastics from water. The device achieved a 105-fold enrichment of MPs, making it an efficient solution for removing microplastics from laundry and industrial wastewater.
Researchers measured noise levels at locations around the launch pad, finding maximum sound levels exceeded predicted values by nearly 20 decibels. The study's findings will help validate and improve existing noise prediction models to protect equipment and surrounding environments.
Researchers investigated acoustic cry characteristics in preterm infants, finding a potential link to developmental delays. The study of 363 preterm infants suggests that early identification of risk for long-term outcomes may be possible through acoustic analysis.
A new study has identified several commonalities and diversity in sleep music, including quieter and slower tempos, more acoustic instruments, and a range of energetic levels. Despite these trends, popular sleep playlists on Spotify include faster and louder tracks that may aid relaxation for some people.
Seal pups possess an innate ability to change their voice pitch and volume, as well as recognize and respond to rhythmic sounds. This study suggests a possible evolutionary link between human-like language abilities and vocal plasticity in seals.
Researchers used hydrophones to monitor two deep-sea hydrothermal vents, finding that they produce subtle sounds near the low end of human hearing range. Characterizing these sounds can help predict and prevent environmental impacts of deep-sea mining.
Researchers have developed a text-to-audio model that can generate coherent and relevant music and sound from text, opening up new avenues for creative application and exploration. The model employed data compression methods to improve output quality and reduce training time.
Acoustic engineers use techniques like impulse responses to reproduce dialogue and other sounds in film. This process creates a believable audio experience for viewers, drawing them into the story. By carefully balancing dialogue, effects, and music, sound mixers achieve cinematic magic.
Researchers have developed an algorithm to detect pressure activity indicative of dust devils in the Mojave Desert, which can inform their formation and life cycles on Mars. The study aims to improve Martian weather models and enhance robotic missions.
An experimental music piece by Alvin Lucier can be used to reveal details of the surrounding room and teach important lessons about acoustic resonance. Students can analyze the frequencies that make up the recording to determine which frequencies are resonances of the room, and then calculate the distance between pairs of walls.
Blackbird Studio C's ambient-anechoic portmanteau, ambichoic, reduces sound reflections, creating a balanced and immersive space for musicians and engineers. The studio's unique design utilizes primitive root diffusers to diffuse sound energy, resulting in a comfortable and engaging environment.
NASA will conduct a series of flights over various communities to test its Quesst Mission Supersonic STEM Toolkit and measure sound levels. The mission hopes to inform an overland supersonic sound standard, potentially cutting flight times in half.
A team of researchers conducted laboratory experiments and online surveys to study the perceived annoyance of impact sounds. They found that thudding sounds created by people walking barefoot are not captured by current standardized performance metrics, which may lead to improved guidance for architects and building code developers.
A team of researchers created 3D-printed violins using modern materials and techniques, producing a darker, more mellow sound. The project aims to make music education accessible through the printing of affordable instruments.
A new app uses customized playlists to console, relax, and uplift users, aiming to improve emotional states. The app's creators found that relaxing and uplifting methods can significantly move listeners from negative to more positive emotional states.
Researchers developed a machine learning algorithm to identify cough sounds and determine if someone has pneumonia, aided by room impulse responses. The algorithm can work in any environment, facilitating non-face-to-face treatment and reducing medical costs.
The Lombard effect is a cycle where individuals speak louder to be heard over background noise, increasing overall din. Researchers propose technology solutions and design changes to minimize the effect, such as individualized conversations via smart earbuds or altering wall absorption in spaces.
Researchers developed a noninvasive microphone sensor that uses machine learning to detect bowel diseases like cholera. The algorithm analyzes audio data from toilet sounds, identifying consistent tones for urination and singular tones for defecation.
Great gray owls have a broad disc-like face that acts as radar to find food, while their facial features help correct for sonic distortions caused by snow. The owls' ability to hover above prey allows them to pinpoint location and avoid acoustic mirages created by the snow.
Eastern red bats, now the most commonly detected bat in Midwestern forests, have a significant impact on tree regeneration due to their appetite for insect-damaging bugs. Forest managers can benefit from considering these bats' landscape preferences, particularly ponds and smaller forest openings.
The Acoustical Society of America will hold its 183rd meeting in Nashville from Dec. 5-9, bringing together experts to share experiments and applications on diverse topics such as machine learning and medical diagnostics. Lay language papers will also be shared, providing summaries of presentations written for a general audience.
Researchers at MIT have developed a machine-learning model that captures how sounds propagate through spaces, allowing for accurate visual renderings of rooms. This technique has potential applications in virtual and augmented reality, as well as improving AI agents' understanding of their environment.
Higher-quality violins produce more detectable objective combination tones, which are linked to air resonance and structural material. The study aims to analyze a greater number of violins to identify the origin of combination tones.
A team of researchers used clear mud to study turbulence in water flows, discovering that low clay concentrations alter the structure of turbulent dynamics. This finding has implications for understanding sediment transport and predicting flow behavior in natural environments.