Page 8: Research news on Acoustics

Acoustics, as a research area, is the scientific study of generation, propagation, interaction, and detection of mechanical waves in gases, liquids, and solids across audible, infrasonic, and ultrasonic frequency ranges. It encompasses theoretical and experimental analysis of wave equations, sound fields, impedance, reflection, refraction, scattering, absorption, and nonlinear effects in complex media and structures. Subfields include physical acoustics, architectural acoustics, aeroacoustics, underwater and ocean acoustics, ultrasonics, vibroacoustics, and acoustical signal processing. Research in acoustics underpins technologies for imaging, nondestructive evaluation, noise control, transducer design, acoustic metamaterials, and advanced measurement techniques for characterizing materials, devices, and environments using sound.

'Talking fish' not heard by conservation policies, study warns

More than a thousand fish species use sounds to exchange information, attract mates, and avoid predators through hums, grunts, clicks, and bubbles. Yet, the vital role of fish sounds—and the impact of noise pollution on ...

Underwater microphones capture 15 years of ocean change

Scientists from Scripps Institution of Oceanography at the University of California San Diego were able to "hear" the impacts of a marine heat wave and even economic slowdowns by analyzing 15 years of ocean sounds recorded ...

Enhancing light control with complex frequency excitations

Researchers at the Advanced Science Research Center at the CUNY Graduate Center (CUNY ASRC) and at Florida International University report in the journal Science their insights on the emerging field of complex frequency excitations, ...

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