Researchers developed a method to modify vehicle sounds using auditory augmented reality, which can draw pedestrian attention without loud warnings. By artificially increasing the frequency of approaching vehicle sounds, participants judged the vehicle as moving faster and closer.
Researchers developed a platform to move Dirac points in momentum space, allowing for free sound steering. Two fully passive devices were built: a scanning topological antenna and an angle-tunable Klein tunneling device.
Researchers at Binghamton University are developing an ear probe that utilizes the unique way spiders 'hear' through their webs to detect inner-ear problems. The probe uses patented sensing technology inspired by spider silk, which can respond to sound with perfect fidelity from 1 Hz up to 50 kHz.
Research suggests that infrasound is registered in the inner ear through different sensory hair cells and electrical potentials, leading to varying perceptions among individuals. This discovery may help explain why some people are bothered by low-frequency noise while others are not.
A Korean research team created an underwater acoustic lens capable of focusing sound precisely at a desired point while reducing weight by about 40% compared to conventional designs. The findings have significant implications for underwater communication, marine environmental monitoring, and acoustic energy transfer.
Researchers have developed a soft, custom-molded acoustic contact lens that actively corrects outgoing sound waves before they pass through an autonomous drone's protective shell. The lens boosts sonar signal strength by up to 10 decibels while cutting background reverberation without draining extra battery power.
Researchers developed a layered sound speed gradient model to capture horizontal variations in the upper and deeper layers of the ocean. The new method significantly reduces positioning errors, achieving millimeter-level accuracy in simulations and field experiments.
A new study maps music and chanting at football stadiums in various countries, showing significant differences in sound and purpose. In England, spontaneous collective singing drives stadium sound, while in Germany, organized and sustained rhythms dominate the atmosphere.
A team of researchers from the Norwegian University of Science and Technology conducted a study on 28 individuals who experience an unexplained buzzing or humming sound. The investigation tested two hypotheses: measuring the sound waves from human-made infrastructure and industry, as well as those produced by nature itself.
Researchers at KAIST have developed PAVAS, an AI technology that generates realistic sound effects in videos based on the physical properties of objects. The technology analyzes movement and collision characteristics to produce more immersive audio experiences.
A team of researchers at Penn State designed a system that can manipulate sound waves to produce high-quality audio in a precise, private area. The 3D-printed speaker cover uses acoustic metasurfaces to focus sound into a tight 'bubble' that is only audible within a small space.
Researchers developed a new analysis of sound wave behavior, revealing surprising effects that have been overlooked for decades. At high sound levels, the shape of the wave becomes progressively distorted, with crests compressing into narrow spikes.
Scientists found that the brain adapts to noise-induced damage within 24 hours by increasing excitability and inhibitory inputs in the superior paraolivary nucleus. This enables the restoration of critical timing information for sound processing, despite diminished sensitivity to quieter sounds.
A new study from the University of Oxford finds that training chatbots to sound warmer makes them up to 30% less accurate and 40% more likely to agree with false beliefs. Researchers tested five AI models, finding that warm models made significant factual errors and validated users' incorrect opinions.
The new computational violin simulates the physics of string interaction with air, producing realistic sound. Luthiers can tweak parameters like wood type or body thickness before hearing the instrument's response.
Researchers developed meta-earplugs with Helmholtz resonators to address low-frequency sound issues. The earplugs use precise tuning of reflected sound waves to relieve pressure and increase protection.
Researchers at McGill University have developed a novel device that generates sound-like particles known as phonons at extremely cold temperatures. The technology has potential applications in high-speed communications, sensing tools, biological materials, and medical systems.
MIT researchers found plants respond to sound waves generated by raindrops, stimulating germination. Seeds exposed to rain sounds germinated 30-40% faster than those not exposed.
A new cleaning method uses tiny bubbles and sound waves to effectively clean agricultural produce. The study found that vegetables were 90% cleaner when washed with resonating bubbles compared to traditional methods.
Researchers have created a carbon-fiber composite that swallows sound waves while retaining the strength of industrial load-bearing panels. The design achieves an average sound absorption coefficient of over 0.9 across a frequency range of 1,500 to 5,500 hertz.
A research team from HKU has identified a fundamental physical principle called duality symmetry that governs the absorption bandwidth of ventilated systems. This breakthrough leads to the design of a new type of ventilated structure that can absorb over 86% of sound across a wide range of frequencies.
Researchers found that environmental and biological factors significantly impact mosquito sound variability between species and individuals. Controlling for these variations is crucial to improve AI-based acoustic classification accuracy.
Researchers found that the visual design of a concert hall significantly affects perceived timbre, with more saturated colors producing colder sounds. Listeners also reported higher liking scores in darker environments, highlighting the importance of considering visual appearance in acoustic design.
Researchers have found that proteins vital for sound signal transmission in the ear also manage the fatty molecules on the cell membrane. When these proteins malfunction, it can trigger permanent hair cell death and lead to hearing loss.
Researchers at Concordia University have developed a new 3D-printing technique using sound waves to print tiny structures onto soft polymers with greater precision than before. This approach, called proximal sound printing, enables the production of complex microfluidic channels and flexible sensors in a single process.
Researchers developed an AI-based method to create binaural audio from monaural recordings, using visual information from the video to guide spatialization. The system accurately preserves a sense of direction and space, even in complex environments.
Researchers at Binghamton University discovered that caterpillars can hear airborne sounds via microscopic hairs on their bodies. The study found that the caterpillars were 10 to 100 times more responsive to airborne sound than surface vibrations felt on their feet, suggesting a new approach for improving microphone technology.
A new in-situ sound speed correction scheme enhances Strap-down Inertial Navigation System (SINS) and Ultra-Short Baseline (USBL) integration for precise underwater navigation. Simulations and sea trials demonstrate notable improvements in positional accuracy, supporting high-precision deep-sea surveys.
Researchers developed a device utilizing sound waves to detect helium by exploiting changes in sound velocity and resonant frequencies. The triangular Kagome structure allows for accurate detection of helium leaks, even at extremely low temperatures.
In a study published in the Journal of Experimental Biology, researchers from Kobe University found that hawkmoth larvae and pupae produce defensive sounds when stimulated. These sounds are released through respiratory openings and resemble snake warning signals, potentially helping the insects evade predators.
Researchers use smartphone microphones to detect sound waves that can penetrate through rubble, helping locate trapped victims. The method achieved an error of 5.04 degrees away from the hypothetical victim in a field test on a disaster training site.
The Hearing Protection Optimization Tool translates acoustic and psychoacoustic factors into clear visuals, helping users compare different hearing protection devices. The tool matches users with regulatory-approved HPDs based on their noise environment and preferences.
A new study by linguist Theresa Matzinger found that the sound quality of words influences how beautiful they are perceived to be and how easily they can be learned. Researchers tested artificial pseudowords with no meaning and found that words with pleasing sounds were also more memorable.
Researchers used NASA's measurements to simulate sound propagation on Mars, providing insight into weather and terrain effects on acoustic propagation. The study focused on the Jezero crater, where it simulated how sound moves through complex terrains, helping scientists understand how other atmospheres compare to Earth's.
A team of researchers created a metamaterial that can transfer sound waves between air and water. The device, made from aluminum and steel plates, works by passing vibrations through its structure to facilitate communication between underwater and airborne vehicles.
Researchers have designed a quieter dental drill to address the anxiety-causing sound of traditional drills, which can reach nearly 20 kilohertz. The new design optimizes blade geometry and exhaust port to minimize noise while maintaining performance, with the goal of reducing discomfort in patients.
A team of researchers designed a custom approach sound library for electric vehicles using low-frequency noise, which was found to be more effective at alerting pedestrians. The sounds were tested with volunteers and ranked highly on criteria such as urgency and noticeability.
Researchers analyzed the linear stability of a two-dimensional compressible Euler-Euler system around planar Couette flow. They found that when sound speeds align, the drag force acts as a stabilizer, controlling turbulence growth rates. This study provides new mathematical ideas for turbulence control.
Researchers have developed a method to generate and detect sound waves at sub-terahertz frequencies using optically driven devices. The discovery was made possible by launching shear hypersound pulses with exceptionally large amplitudes in metal halide perovskites.
Researchers at University of Alaska Fairbanks used seismic data to identify aircraft types by analyzing frequency imprints from sound waves. The method involves removing Doppler effect and creating a frequency comb, which is then matched with a catalog of aircraft frequency patterns.
Researchers developed a fractal-based speaker add-on that reduces sound disparities between drivers and passengers in cars. The metamaterial, inspired by the Koch snowflake fractal, creates broadband wavefront control for a more even sound field.
A new study from the Hebrew University of Jerusalem reveals that early sound exposure significantly affects brain activity and emotional preferences in mice. Male mice develop strong behavioral changes when exposed to Beethoven's Symphony No. 9 or silence, while female mice show varied preferences.
Worcester Polytechnic Institute Professor Nitin Sanket has been awarded a $704,908 NSF grant to develop sound-based navigation systems for small aerial robots. The project aims to enable drones to navigate in environments where cameras and light-based sensors fail.
Researchers found CI sound quality leads to a 32% variance in users' quality of life, while speech recognition has virtually no predictive power. The study challenges decades of clinical practice focusing on speech understanding in quiet environments.
A study published in PLOS Biology finds no evidence of subcortical processing for selective attention, suggesting the auditory cortex 'turns up the volume' on focused sound. Researchers used novel experimental techniques to test this hypothesis using audiobooks and diotic and dichotic listening tasks.
Researchers found that people process sounds differently when walking compared to standing or walking in place. The brain responds more strongly to sounds while walking, and this response changes depending on the direction of the walk.
Researchers from the University of Chicago have achieved deterministic phase control of phonons, tiny mechanical vibrations that can be used to transmit data. This breakthrough could give sound an edge over light in building tomorrow's quantum computers.
Mizzou researchers have discovered a way to 'listen' to molecules moving faster than the speed of sound, using photoacoustic spectroscopy. This technique could help unravel mysteries of astrochemistry and offer clues about the universe's composition, star formation, and life origins.
A large-scale study led by New York University found that children receiving biofeedback speech therapy improved their 'r' sound pronunciation at a much faster rate than traditional methods. This technology-enhanced treatment approach uses visual feedback to improve speech, making it easier for children to adjust and reducing frustration.
Researchers have found that stylolites in limestone rock samples disrupt sound wave propagation, particularly affecting secondary waves that form due to scattering. This discovery has implications for monitoring hydraulic fracture propagation in rock samples containing stylolites.
A team of scientists has developed microrobots that use sound waves to coordinate into large swarms exhibiting intelligent-like behavior. The swarms can navigate tight spaces and re-form themselves, making them suitable for tasks like cleaning up pollution and delivering drugs directly to a problem area.
A large-scale study from the University of Michigan and University of Minnesota found no association between musical training and enhanced neural processing of sounds at early stages of auditory processing. Musicians demonstrated no greater ability to process speech in background sounds or changes in pitch than non-musicians.
Researchers at Boston University developed a new ultra-open metamaterial that effectively silences a broader range of unwanted sounds while preserving airflow. This breakthrough enables practical acoustic silencing in diverse settings, such as factories, offices, and public spaces.
Researchers at Stanford University have developed a novel nanodevice that manipulates light using sound waves, enabling precise control over color and intensity. This breakthrough has significant implications for various fields, including computer displays, virtual reality, and optical communications.
Researchers developed a low-cost visual microphone that listens with light instead of sound, capturing tiny vibrations on surfaces caused by sound waves and turning them into audible signals. The system uses single-pixel imaging to detect sound and can recover high-quality audio using everyday objects like paper cards and leaves.
Researchers have developed a noninvasive method for visualizing stents through skin using photoacoustic microscopy, potentially reducing the need for surgical access and X-ray exposure. The technique uses sound waves generated by light absorption to create high-resolution images of stents in various conditions.
A study found that evaluators' musical experience influences the sight-over-sound effect, reducing its impact for those with auditory expertise. The study used Japanese high school brass band competitions and found no significant evidence of the effect in musicians, but a stronger presence in non-musicians.
A new study reveals that global ocean analysis products can replace expensive in-situ sound speed measurements for precise seafloor positioning. Global ocean analysis achieves centimeter-level accuracy, comparable to traditional methods, and reduces costs and logistical challenges in marine geodetic surveys.
Researchers developed a two-layer aerogel that mimics owl feathers and skin to mitigate sound pollution, offering high-performance, lightweight and durable sound-absorbing materials. The material can cancel out low-frequency noise and dampen high-frequency sounds, alleviating noise pollution from industrial equipment and traffic.
The research team developed a novel auditory technology that allows sound-based interaction between humans and robots, even in noisy environments. The technology facilitates sound-based recognition of human positions using only a single microphone.