Researchers implement defect-robust multi-channel signal processor by tailoring long-range interactions in topological photonic lattices. This approach enables multichannel topologically-protected edge modes and breaks the trade-off relation between channels and bandwidth, leading to enhanced information capacity.
SourceLight Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS·JournalLight Science & Applications·DateSep 26, 2024
A team of researchers at ETH Zurich created a method to suppress sound wave propagation in the backward direction without deteriorating forward propagation. They achieved this using self-oscillations and a circulator, which allows sound waves to travel only one way.
SourceETH Zurich·JournalNature Communications·DateSep 6, 2024
Researchers have discovered that healthy soils produce unique sound profiles reflecting the diversity of tiny living organisms. This technology holds promise in addressing global needs for effective soil biodiversity monitoring methods to protect ecosystems.
SourceFlinders University·JournalJournal of Applied Ecology·TypeObservational study·DateAug 16, 2024
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SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.
The study demonstrates a universal theory of angular Brewster effect, allowing control over both momentum and orbit. This enables asymmetric vortex transmission for electromagnetic and acoustic waves, increasing data transmission speed and quality.
SourceScience China Press·JournalScience Bulletin·DateJul 10, 2024
A Virginia Tech researcher has developed a new tool that uses robotics and acoustic energy to move small targets, such as cells and medicine, within the body without cutting or invasive procedures. The 'invisible tweezers' have potential applications in various fields, including engineering, biology, and chemistry research.
SourceVirginia Tech·JournalScience Advances·DateMay 24, 2024
Researchers from the Polish Academy of Sciences find that wave phenomena, like sound waves, may be responsible for heat transport in complex systems. The study uses the telegraph equation to describe how electric current propagates with attenuation along one spatial dimension.
SourceThe Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences·JournalInternational Journal of Heat and Mass Transfer·DateMay 23, 2024
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 at Pohang University of Science & Technology have developed the first wide field-of-hearing metalens, overcoming traditional acoustic lens limitations. The device achieves up to 140 degrees of field-of-hearing without sound distortion, enabling new applications in acoustic imaging and high-sensitivity sensing.
SourcePohang University of Science & Technology (POSTECH)·JournalNature Communications·DateMay 13, 2024
Kestrel 3000 Pocket Weather Meter
Kestrel 3000 Pocket Weather Meter measures wind, temperature, and humidity in real time for site assessments, aviation checks, and safety briefings.
A study by Edith Cowan University and Fiona Stanley Hospital found that up to 50% of ICU patients experience sleep disturbance due to noise, which can hinder recovery. The researchers identified potential for medical equipment designers to consider alarm speakers' directivity and reducing volume levels to minimize noise exposure.
SourceEdith Cowan University·JournalHERD Health Environments Research & Design Journal·TypeSurvey·DateApr 30, 2024
The Penn State Listening Lab is analyzing national park sounds to understand human impact on wildlife, ecosystems, and visitor experiences. This research aims to inform conservation policies and protect natural quiet.
Researchers discover finite barrier bound states (FBICs) in photonic crystals, exhibiting non-radiating properties and complete localization of boundary modes within few lattice sites. This breakthrough offers a novel approach to achieving BICs and fine control of boundary modes.
SourceLight Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS·JournalLight Science & Applications·DateMar 31, 2024
Researchers used psycho-acoustic simulations and auralization to assess the noise emissions of new aircraft designs, including a blended wing body. The results show that the new design is rated significantly less noisy than conventional passenger jets, with take-offs leaving a more unfamiliar sound impression.
SourceSwiss Federal Laboratories for Materials Science and Technology (EMPA)·JournalAerospace Science and Technology·TypeMeta-analysis·DateJan 25, 2024
Researchers at TU Wien have developed a 'quantum ping-pong' where two atoms bounce a single photon back and forth. The team used a Maxwell fish-eye lens to achieve pinpoint accuracy, allowing the photons to be transferred from one atom to another with high efficiency.
SourceVienna University of Technology·JournalPhysical Review Letters·DateJan 16, 2024
Apple iPhone 17 Pro
Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.
Researchers found that commercial ship noise completely masks Cook Inlet beluga whales' most commonly used calls, compromising their critical communication. The study documents the complex vocal repertoire of the population and provides a quantified measure of masking by ship noise on their communication.
SourceUniversity of Washington·JournalThe Journal of the Acoustical Society of America·TypeObservational study·DateDec 11, 2023
Researchers investigate how creaky voice use varies across different areas of Sydney, finding that the area's diversity plays a significant role. The study reveals mixed results regarding the influence of gender on creaky voice use, with no statistically significant difference found between men and women.
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.
AmScope B120C-5M Compound Microscope
AmScope B120C-5M Compound Microscope supports teaching labs and QA checks with LED illumination, mechanical stage, and included 5MP camera.
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 ...
Rigol DP832 Triple-Output Bench Power Supply
Rigol DP832 Triple-Output Bench Power Supply powers sensors, microcontrollers, and test circuits with programmable rails and stable outputs.
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.
SourceUniversity of Eastern Finland·JournalOpen Archaeology·DateNov 27, 2023
Researchers have observed simultaneous oscillations of spin and orbital angular momentum in weak and strong coupling regimes, driven by optically synthesized magnetic fields. The findings offer a general framework to explore spin-orbit couplings in higher-order regime.
SourceLight Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS·JournalLight Science & Applications·DateOct 11, 2023
Meta Quest 3 512GB
Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.
Researchers will investigate topological acoustics to improve computing speeds, reduce power usage in smartphones, and enhance sensing capabilities. The new center aims to harness the full power of acoustic waves to reveal extraordinary properties of sound.
SourceUniversity of Arizona College of Engineering·DateSep 7, 2023
Researchers from FAU Harbor Branch deployed an autonomous wave glider to survey marine managed areas off Puerto Rico, recording grouper mating calls and determining spatiotemporal distribution of the two species. The study highlights the importance of spatial and temporal expansion of existing regulations to protect threatened species.
SourceFlorida Atlantic University·JournalFisheries Research·TypeObservational study·DateAug 9, 2023
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.
SourceAalto University·JournalJournal of the Audio Engineering Society·TypeComputational simulation/modeling·DateJul 11, 2023
The study used a battery-powered acoustic array to record Goliath grouper sounds at an artificial reef, assessing their presence by measuring acoustic activity and habitat distribution. The results showed that the model can be used to automatically process large amounts of acoustic data and provide detailed movements of marine organisms.
SourceFlorida Atlantic University·JournalThe Journal of the Acoustical Society of America·TypeObservational study·DateJun 28, 2023
GoPro HERO13 Black
GoPro HERO13 Black records stabilized 5.3K video for instrument deployments, field notes, and outreach, even in harsh weather and underwater conditions.
Researchers developed methods to emphasize higher-frequency components of bone-conducted speech signals, improving intelligibility in noisy environments. The study's findings have potential real-life applications in BC-type hearing aids and auditory augmentation.
SourceJapan Advanced Institute of Science and Technology·JournalApplied Acoustics·DateJun 14, 2023
Scientists have identified a genetic locus associated with voice pitch, found in the ABCC9 gene, which influences voice characteristics in both men and women. The study also reveals links between voice pitch and cardiovascular health, highlighting the complex relationship between vocal traits and human biology.
SourcedeCODE genetics·JournalScience Advances·TypeData/statistical analysis·DateJun 9, 2023
Researchers at Shinshu University developed high-performance source-shifters using acrylonitrile butadiene styrene (ABS) resin, employing inverse design and topology optimization. The optimized structures can reduce the difference between emitted pressure fields to as low as 0.6%, enabling effective acoustic location camouflaging.
SourceShinshu University·JournalJournal of Sound and Vibration·TypeComputational simulation/modeling·DateMay 30, 2023
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.
SourceChalmers University of Technology·JournalInternational Journal of Environmental Research and Public Health·TypeExperimental study·DateMay 19, 2023
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.
Fluke 87V Industrial Digital Multimeter
Fluke 87V Industrial Digital Multimeter is a trusted meter for precise measurements during instrument integration, repairs, and field diagnostics.
A new study reveals that our perception of difficulty in shouting upwind is incorrect. It's not the wind itself that makes it hard, but rather our inability to hear ourselves due to the convective attenuation effect. The study found that sound carries better within the first 100 meters upwind, making it easier for others to hear us.
SourceAalto University·JournalScientific Reports·DateApr 24, 2023
A new method for estimating sound direction using monaural cues has been proposed by researchers at Japan Advanced Institute of Science and Technology. The approach uses modulation in the frequency spectrum of the received signal to detect the signal direction, achieving accurate estimates even with human monaural hearing.
SourceJapan Advanced Institute of Science and Technology·JournalApplied Acoustics·DateMar 14, 2023
Researchers at Aalto University have developed new textiles that change shape when heated, providing adjustable aesthetics and potential applications in health monitoring and thermal insulation. The innovative fabrics use liquid crystalline elastomers, which can respond to heat, light, or other stimuli.
SourceAalto University·JournalAdvanced Materials·DateFeb 21, 2023
A new study suggests that office noise levels between 50 decibels can boost physiological well-being, while loud noises above 50 decibels decrease it. Researchers found that even low sound levels trigger a higher stress response, highlighting the need for optimal acoustics in workplace design.
SourceUniversity of Arizona·Journalnpj Digital Medicine·TypeExperimental study·DateFeb 2, 2023
Apple Watch Series 11 (GPS, 46mm)
Apple Watch Series 11 (GPS, 46mm) tracks health metrics and safety alerts during long observing sessions, fieldwork, and remote expeditions.
Researchers at the University of Tsukuba have developed an optoelectronic resonator that enhances the sensitivity of an electron pulse detector, allowing for ultrafast electronic characterization of proteins or materials. This breakthrough may aid in the study of biomolecules and industrial materials.
SourceUniversity of Tsukuba·JournalACS Photonics·DateDec 14, 2022
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 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.
Aranet4 Home CO2 Monitor
Aranet4 Home CO2 Monitor tracks ventilation quality in labs, classrooms, and conference rooms with long battery life and clear e-ink readouts.
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.
SourceMassachusetts Institute of Technology·DateNov 1, 2022
Researchers at the University of Technology Sydney have extended the theory of acoustic levitation to account for asymmetrical particles, which is more applicable to real-world experience. This new understanding enables precise control and sorting of tiny objects using ultrasonic waves.
SourceUniversity of Technology Sydney·JournalPhysical Review Letters·TypeComputational simulation/modeling·DateOct 18, 2022
Researchers found that infants differentiate sounds based on neighboring sounds and vowel durations. Their study suggests that babies can learn the speech contrasts of their language through naturalistic speech data.
SourceUniversity of Maryland·JournalProceedings of the National Academy of Sciences·DateSep 19, 2022
DJI Air 3 (RC-N2)
DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.
A new study demonstrates bound vortex light on optical chips by simulating gauge fields of cosmic strings. The research team created a deformed photonic graphene inspired by cosmic strings, which can generate and transport optical vortices and control photon orbital angular momentum.
SourceLight Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS·DateAug 26, 2022
Researchers used physics-based models and historical data to debunk internet claims about the Saturn V's acoustic power, finding levels of 203 decibels, comparable to commercial jet engines. The study also predicts sound levels for NASA's SLS Artemis 1 launch and provides educational tools for college-level physics classrooms.
SourceAmerican Institute of Physics·JournalThe Journal of the Acoustical Society of America·DateAug 23, 2022
The €15.7 million AUFRANDE project aims to generate industry-relevant research by employing 64 early career doctoral researchers from French and Australian universities. Researchers will receive training and support, including annual workshops and group events, to foster high-performing early-stage researchers.
A team of researchers from Kyushu University has developed an olfactory sensor capable of identifying individuals by analyzing the compounds in their breath. The system, combined with machine learning, achieved an average accuracy of over 97% in authenticating up to 20 individuals.
SourceKyushu University·JournalChemical Communications·TypeExperimental study·DateJun 22, 2022
GQ GMC-500Plus Geiger Counter
GQ GMC-500Plus Geiger Counter logs beta, gamma, and X-ray levels for environmental monitoring, training labs, and safety demonstrations.
A new camera system developed by Carnegie Mellon University researchers can reconstruct sound vibrations with extraordinary accuracy, capturing isolated audio without inference or a microphone. The dual-shutter vibration-sensing system uses two cameras and a laser to detect high-speed, low-amplitude surface vibrations.
John Kershner, a Lehigh University PhD candidate, has been awarded a Fulbright research grant to continue his work on owl-inspired aero-acoustics in Germany. He will collaborate with researchers at Brandenburg Technical University and the DLR to experimentally test these designs.
Researchers at the University of Bristol have discovered that moth wing scales can absorb up to 87% of incoming sound energy, even when placed on an artificial surface. This finding has huge implications for building acoustics and travel industries, with potential applications for ultrathin sound absorbing panels.
SourceUniversity of Bristol·JournalProceedings of the Royal Society A Mathematical Physical and Engineering Sciences·TypeComputational simulation/modeling·DateJun 14, 2022
The Collaborative Research Centre Hearing Acoustics is developing smart hearing aids that use artificial intelligence to adjust to different environments. The project, which aims to create more adaptable hearing devices, has received $8.1 million in funding for another four years.
Apple MacBook Pro 14-inch (M4 Pro)
Apple MacBook Pro 14-inch (M4 Pro) powers local ML workloads, large datasets, and multi-display analysis for field and lab teams.
The Rule of Two method uses multiple measurements to collect reliable data, overcoming the limitations of single sine sweep techniques. This new approach will make it easier and faster to design rooms with optimal acoustic combinations, leading to better sound quality in various spaces.
SourceAalto University·JournalThe Journal of the Acoustical Society of America·DateMar 30, 2022
Researchers at Duke University have developed a device that manipulates particles and cells using complex sound waves, enabling selective pairing of individual cells to measure adhesion forces. This technology could lead to personalized medicine by allowing doctors to determine treatment for individual cancer patients.
SourceDuke University·JournalNature Materials·TypeExperimental study·DateMar 24, 2022
The team used a microscale diffuser to distribute ultrasound waves uniformly, reducing the risk of over-exposure or under-exposure. The device successfully stimulated cells in human embryonic kidney cells and neuron cells, as well as mice, with improved targeting.
SourceUniversity of California - San Diego·JournalAdvanced NanoBiomed Research·TypeExperimental study·DateMar 23, 2022
Researchers developed a highly efficient wave-based acoustics simulation that can accurately estimate the acoustics of large-scale interior spaces. The method uses a time-domain Finite Element Method to consider frequency-dependent characteristics of sound absorption materials, enabling precise modeling and high-speed estimations.
SourceKobe University·JournalBuildings·TypeComputational simulation/modeling·DateFeb 21, 2022
Creality K1 Max 3D Printer
Creality K1 Max 3D Printer rapidly prototypes brackets, adapters, and fixtures for instruments and classroom demonstrations at large build volume.
Ancient Chinese scholars viewed sound as a means to assess cosmic qi and predict weather events. Jing Fang's tuning system, developed in the 1st century BCE, used acoustics to construct a closed cycle with reduced gaps, allowing for accurate seasonal predictions.
SourceUniversity of Chicago Press Journals·JournalIsis·TypeContent analysis·DateJan 7, 2022