Articles tagged with Sound Transmission
Researchers have captured the behavior of scissor-tailed nightjars creating a unique sound by snapping their wrists together during courtship and copulation. The study sheds light on lesser-known bird communication methods and raises questions about the nuances of mechanical sounds.
Parasites alter male calls, creating a complex pattern that can change how females evaluate potential partners. Females prefer lower-frequency calls, but also weigh the risk of parasite infection, making mate choice a nuanced decision.
In her book 'Sonic Socialism: Crisis and Care in Pandemic Hanoi', Christina Schwenkel explores how Vietnam used sound technologies to inform, regulate, and connect people during the pandemic. The country's success was largely due to its rapid communication systems, including loudspeakers and public health videos.
A team of researchers at Kyoto University has found that cells can hear and respond to sound waves, leading to potential applications in medicine and healthcare. The study used acoustic pressure to induce cellular responses, revealing the suppression of fat cell formation and activation of mechanosensitive genes.
A new eavesdropping technology has been developed to intercept underwater messages from the air, posing significant security risks. The device uses radar to decode tiny vibrations on the water's surface, allowing for location identification and message interception.
Researchers from Max Planck Institute tracked the heart rates of male common noctule bats during flights, revealing a significant increase in heart rate from 6 to 900 beats per minute. The study found that bats consume up to 42% more energy in summer compared to spring, and develop unique strategies to survive in different seasons.
A team of researchers from MIT created a lightweight, compact, and efficient mechanism to reduce noise transmission using a sound-suppressing silk fabric. The fabric uses vibrations to cancel out unwanted sounds in two different ways, one for small spaces and another for larger areas like rooms or cars.
A recent study by researchers at LMU Munich discovered that neural networks adapt to sensory stimulation on an individual nerve fiber basis, rather than transferring improvements to neighboring fibers. This finding suggests that varied sensory experience throughout life is essential for maintaining cognitive fitness.
Researchers developed an all-light communication network that combines different types of light sources to ensure connectivity in various environments. The network enables real-time data transmission between nodes, facilitating applications such as video conferencing, sensor data exchange, and Internet of Things services.
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.
A new study uses drone-mounted technology to deter bats from flying into wind turbines, reducing fatalities by 40% and allowing turbines to operate efficiently. The device transmits ultrasonic signals and lights to warn bats of danger, leading them to fly over the turbine and out of harm's way.
Researchers at KAUST have developed acoustic tweezers that use spinning sound waves to manipulate ultrasmall objects with precision. This technology has the potential to enable precise control of submillimeter objects in opaque media, such as soft biological tissues.
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.
Scientists review natural structures with exceptional properties, such as wood, bones, spider webs, and sea sponges. These hierarchical structures can be used to design innovative materials for vibration damping and acoustic wave control.
MIT researchers create a low-power, sound-harvesting camera that captures color photos and transmits data wirelessly. The autonomous device can run for weeks without power, enabling scientists to explore remote oceans and monitor climate change impacts.
Scientists at the University of Tsukuba have developed a theoretical model to describe the motion of ultrasound waves in liquids containing multiple bubbles, which may enable advances in diagnostic and therapeutic applications of ultrasound technology. The new equations can also be used to enhance microbubble-enhanced medical applicati...
Researchers found that New Caledonian humpback whales can learn and accurately sing songs from Australian counterparts with remarkable accuracy. This cultural transmission is rare in non-human species and provides insight into the evolution of cultural communication in animals and humans.
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.
Researchers at City University of Hong Kong have discovered a new type of sound wave that vibrates transversely and carries both spin and orbital angular momentum like light. This finding provides new degrees of freedom for sound manipulations, enabling unprecedented acoustic communications and sensing capabilities.
The Seattle Space Needle renovation incorporated acoustic designs to limit sound transmission, enhancing visitor experience. Acoustic materials and effective reverberant sound control were selected for the observation levels and restaurant.
Researchers at Johns Hopkins APL aim to create an ideal baby monitor that filters out unwanted noises, ensuring parents don't miss infant cries. The team's open-source device uses audio processing hardware to filter out background sounds, improving the overall baby monitoring experience.
Researchers at Japan Advanced Institute of Science and Technology create method to estimate five-room acoustic parameters and speech transmission index using a short conversation, with potential applications in monitoring auditoriums during concerts and saving lives through smart speakers
Researchers developed a layered glass material allowing for acoustic propagation without air ventilation. The decorated window comprises ordinary glass, resulting in an inexpensive and optically transparent material.
Researchers created a new acoustic smart material inspired by shark skin that can mimic three key electronic devices: a switch, logic gate, and diode. The material changes its properties in response to magnetic stimuli, allowing for on-demand transmission and switching.
A team of biologists identified a receptor that, when blocked, can prevent common types of hearing loss. They found that a drug called IEM-1460 selectively blocks the receptor and prevents hearing damage in mice exposed to noise.
Researchers have created devices that manipulate sound in the same way as light, creating opportunities for entertainment and public communication. They've demonstrated a dynamic metamaterial device with a zoom objective and built a collimator to transmit sound as a directional beam.
A study found that white-tailed deer feeding habits shape acoustic properties of their forest habitat, influencing songbird vocalizations. Deer browsing reduces understory vegetation density, leading to improved sound fidelity and clearer information transmission.
Scientists studying climate change's impact on underwater sound propagation and sonar transmission. Warmer oceans increase sound speed, making detection of submarines more challenging.
A recent study reveals that the evolution of differences between human language's sound systems is partly linked to climatic or ecological conditions. The researchers found a correlation between ecological factors and the ratio of sonorant segments to obstruent segments in languages.
Researchers at Caltech have created a tunable acoustic diode that allows acoustic information to travel only in one direction, controllable by frequency. This technology brings soundproofing closer to reality, with potential applications in biomedical ultrasound devices and energy-harvesting systems.
A computer model developed by Koos Huijssen predicts sound transmission of improved ultrasound instrument designs, processing large data sets on PC and parallel supercomputers. The model is being used to design a new sonographic transducer at Erasmus University Medical Centre.
Researchers can now reconstruct missing sound sequences by analyzing typical language patterns. This technology will aid safe communication in noisy environments and help historians recreate lost texts.