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Scientists confirm 'second sound' is real, and it's wild

Heat is not supposed to behave like this. In everyday life, warmth seeps and diffuses, spreading from hot to cold in a slow, smearing process that never looks anything like a crisp sound wave. Yet ...
The Manila Times

Lifevibe VAT Chair Prime®- The World's First Consumer-Grade Vibroacoustic Therapy Chair Officially Launched

Lifevibe® has launched the Vibroacoustic Therapy Chair, the first consumer-grade vibroacoustic therapy chair (VAT Massage ...
IEEE

Overcoming the Spectral Bias Problem of Physics-Informed Neural Networks in Solving the Frequency-Domain Acoustic Wave Equation

Abstract: Physics-informed neural networks (PINNs) have recently been utilized to tackle wave equation-based forward and inverse problems. However, they encounter challenges in accurately predicting ...

The sound of droplets striking water: How cowbirds control two sound sources in the syrinx to create 'liquid notes'

Cowbirds are special among songbirds for the "watery" timbre of their singing, which resembles the sound of falling droplets ...
IEEE

Frequency-Modulated Continuous-Wave Chirp Frequency Error and Phase Noise Measurement: How to Characterize Frequency-Modulated Continuous-Wave Chirp Using Commercial Oscilloscope

Abstract: Integrated frequency-modulated continuous-wave (FMCW) radars are used in target range and velocity sensing applications [1]. In these systems, the output frequency is linearly modulated over ...