Institute of Acoustics

Pore Pressure Prediction in Tight Sandstone Reservoirs with a Hybrid BiLSTM-CNN Model

Accurate pore pressure estimation in tight sandstone reservoirs is hampered by the limited sensitivity of conventional approaches, which rely on a single acoustic or resistivity log and assume shale undercompaction as the dominant overpressure mechanism. This study develops a hyb...

Auditory attention decoding from Ear-EEG signals: A dataset with dynamic attention switching and rigorous cross-validation

Recent promising results in auditory attention decoding (AAD) using scalp electroencephalography (EEG) have motivated the exploration of cEEGrid, a flexible and portable ear-EEG system. While prior cEEGrid-based studies have confirmed the feasibility of AAD, they often neglect th...

An optimal demodulation frequency band selection method based on Holo-Hilbert spectral analysis for propeller modulation feature recognition

The modulation spectrum of underwater propellers typically contains information on propeller structural characteristics, such as the shaft frequency and blade number. Detection of Envelope Modulation on Noise (DEMON) analysis is an effective method for underwater propeller modula...

Passive Metasurface Tweezers for Multi‐Scale Orbital Transport and Trapping on Elastic Plates

ABSTRACT Acoustic manipulation on solid surfacesis often constrained by limited wave‐field reconfigurability and reliance on complex active excitation, hindering the simultaneous realization of particle confinement and controlled rotation. Here, we present a passive, subwavelengt...

Early weight bearing with ultrasound monitoring is associated with accelerated functional recovery after open repair of acute achilles tendon rupture: a retrospective cohort study

Optimal rehabilitation after open repair of acute Achilles tendon rupture (AATR) remains controversial. Early weight-bearing may enhance recovery, but its clinical use is limited by lack of objective criteria. This study evaluated the safety and efficacy of an ultrasound-monitore...

Unveiling non-Hermitian band structures with non-Bloch supercells

Abstract Real-valued band structures underpin the analysis of periodic Hermitian systems and are well established experimentally. By contrast, non-Hermitian systems feature complex band structures, in which energy and momentum acquire imaginary parts, enabling phenomena that defy...

Observation of erratic non-Hermitian skin localization and transport

Abstract Localization is a pervasive phenomenon across physics, shaping transport from electrons in solids to light and sound in engineered media. In traditional settings, disorder strongly impedes transport, resulting in dynamical localization or, at best, sub-ballistic or diffu...

Ground Vibration due to a Leaking Pipe: Uncertainties in Elastic Wave Propagation and Their Effects

Abstract This work investigates the propagation of elastic waves in soil induced by a leaking buried pipe, emphasizing the influence of uncertainty on ground-surface responses. The analysis is grounded in the underlying wave physics and employs a stochastic modelling framework to...