Articles tagged with Sound Attenuation
Researchers developed a unified theoretical framework for ultrasound wave propagation and energy dissipation in porous rock formations. The study identifies three distinct longitudinal-wave types with different physical origins, providing a basis for understanding and predicting ultrasonic wave behavior in multiphase porous media.
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 developed a framework to predict acoustic streaming in mid-air phased arrays, revealing its influence on tactile perception and object stability. The study validates thermoviscous and atmospheric attenuation models, enabling precise sound-field design for safer ultrasonic interfaces.
Researchers developed an equation describing pressure wave propagation in bubbly flows, confirming that changes in tube cross-sectional area contribute to pressure wave attenuation. The rate of change in tube cross-sectional area is a key parameter governing pressure wave attenuation.
A new deep learning-based inverse design method allows for the optimization of complex acoustic metamaterials, reducing noise pollution while maintaining ventilation. The approach enables ultra-broadband sound attenuation across various peak frequencies.
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.
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.
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.
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...
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.
A team led by Prof. PAN Jianwei from the University of Science and Technology of China has successfully measured second sound attenuation in a controlled experiment using ultra-cold lithium-6, verifying the dynamic scaling theory and paving the way for further research on quantum critical regions.