A5082837065- Ultrasonics and Acoustic Wave Propagation
- Animal Vocal Communication and Behavior
- Geophysical Methods and Applications
- Non-Destructive Testing Techniques
- Ultrasound Imaging and Elastography
- Marine animal studies overview
- Ultrasound and Hyperthermia Applications
- Bone health and osteoporosis research
- Music and Audio Processing
- Orthopaedic implants and arthroplasty
- Photoacoustic and Ultrasonic Imaging
- Seismic Waves and Analysis
- Force Microscopy Techniques and Applications
- Noise Effects and Management
- Underwater Acoustics Research
- Speech and Audio Processing
- Advanced MRI Techniques and Applications
- Medical Imaging Techniques and Applications
- Orthopedic Infections and Treatments
- Structural Health Monitoring Techniques
- Elasticity and Material Modeling
- Acoustic Wave Resonator Technologies
- Bone and Joint Diseases
- Thermography and Photoacoustic Techniques
- Ultrasound and Cavitation Phenomena
Sorbonne Université
2013-2025
École Pratique des Hautes Études
2021-2025
Institut de Systématique, Évolution, Biodiversité
2021-2025
Centre National de la Recherche Scientifique
2014-2025
Muséum national d'Histoire naturelle
2025
Inserm
2015-2021
Laboratoire d’Imagerie Biomédicale
2013-2021
Université Paris 1 Panthéon-Sorbonne
2018
Université Paris Cité
2012-2014
Los Alamos National Laboratory
2013-2014
Abstract Passive acoustic monitoring is increasingly being applied to terrestrial, marine and freshwater environments, providing cost‐efficient methods for surveying biodiversity. However, processing the avalanche of audio recordings remains challenging, represents nowadays a major bottleneck that slows down its application in research conservation. We present scikit‐maad, an open‐source Python package dedicated analysis environmental recordings. This was designed (a) load process digital...
The concept of soundscape was originally coined to study the relationship between humans and their sonic environment. Since then, several definitions soundscapes have been proposed based on musical, acoustical ecological perspectives. However, causal mechanisms that underlie often overlooked. As a consequence, term “soundscape” is frequently used in an ambiguous way, alternatively pointing objective realities or subjective percepts. Through interdisciplinary review, we identified main biotic...
1. Passive acoustic monitoring of biodiversity is growing fast, as it offers an alternative to traditional aural point count surveys, with the possibility deploy long-term surveys in large and complex natural environments. However, there still a clear need evaluate how frequency-and distancedependent attenuation sound well ambient level impact detection distance soniferous species environments over diel cycles across seasons. This great importance avoid pseudoreplication provide relevant...
The aim is to assess the nonclassical component of material nonlinearity in several classes materials with weak, intermediate, and high nonlinear properties. In this contribution, an optimized resonant ultrasound spectroscopy (NRUS) measuring data processing protocol applied small samples described. used overcome effects environmental condition changes that take place during experiment, may mask intrinsic nonlinearity. External temperature fluctuation identified as a primary source...
Anisotropy of wave velocity and attenuation induced by a dynamic uniaxial strain is investigated acoustoelastic testing in limestone. Nonlinear resonance spectroscopy performed simultaneously for comparison. A compressional the sample at 6.8 kHz excited to produce with an amplitude varied from 10−7 10−5. sequence ultrasound pulses tracks variations ultrasonic attenuation. Variations measured when propagate direction are 10 times larger than propagation occurs perpendicularly. consist “fast”...
Biodiversity monitoring is crucial in the Anthropocene era, yet traditional methods lack spatial and temporal coverage. Passive acoustic (PAM) offers a solution by enabling continuous, non-invasive data collection across ecosystems taxa. Ecoacoustics uses PAM to assess biodiversity through metrics, requiring robust methodologies for collection, analysis sharing. Essential Variables (EBVs) provide standardized framework, but integrating as EBVs remains challenging due imperfect detectability....
The objective of the study was to evaluate ability a nonlinear ultrasound technique, so-called resonant spectroscopy (NRUS) for detecting early microdamage accumulation in cortical bone induced by four-point bending fatigue. Small parallelepiped beam-shaped human specimens were subjected cyclic fatigue several steps. prepared control damage localization during cycling and unambiguously identify modes NRUS measurements. measurements achieved follow evolution hysteretic elastic behavior...
The concept of a soundscape is found in both ecology and music studies. Nature soundscapes compositions are analyzed by disciplines, respectively, to understand their biological diversity ecosystem functioning interpret compositional structure. A major challenge for disciplines visualizing the information embedded large variety share it with different audiences, from non-professionals experts. To analyze soundscapes, have independently developed similarity visualizations. However, no attempt...
The current work aimed at comparing, on site-matched cortical bone tissue, the micron-level elastic modulus Ea derived from 200 MHz-scanning acoustic microscopy (SAM) impedance (Z) combined with mineral density (assessed by synchrotron radiation microcomputed tomography, SR-µCT) to nanoindentation En. A good correlation was observed between En and Z (R2=0.67, p<0.0001, root mean square error RMSE=1.9 GPa). acoustical showed higher values of E compared moduli. We assumed that discrepancy may...
The nondestructive evaluation of closed cracks is a challenging subject in ultrasonic testing. Recently, nonlinear phased array with fixed-voltage fundamental wave amplitude difference (fixed-voltage FAD) has been proposed as practical approach. In this study, the maximum incident amplitude, which one most critical parameters closed-crack imaging, was investigated. First, theoretical model formulated to explicitly show essence principle FAD and advantage over different-voltage FAD....
We investigated the imaging capability of fixed-voltage fundamental wave amplitude difference (fixed-voltage FAD), which is one nonlinear ultrasonic phased array techniques, for three-dimensional crack open/closed distribution. fabricated two fatigue specimens with different thicknesses, were selected to create distributions in them. As a result applying FAD mechanical scans thick and thin specimens, distribution was successfully visualized. The results are good agreement fracture mechanics....
We evaluate the sensitivity of multimodal nonlinear resonance spectroscopy to torque changes in a threaded interface. Our system is comprised bolt progressively tightened an aluminum plate. Different modes are studied range 1–25 kHz, which correspond primarily bending Nonlinear parameters expressing importance frequency and damping variations extracted compared linear ones. The influence each mode shape on discussed. Results suggest that measurement appropriate sensitive method for...
Abstract Although the understanding of nonlinear ultrasonic scattering at closed cracks is essential for practical application phased array, it has yet to be elucidated because lack experimental techniques. This study proposes fixed-voltage fundamental wave amplitude difference (FAD) with radarlike display. We first describe principle and imaging algorithm proposed method. In order demonstrate technique, we formed a fatigue crack in an aluminum-alloy specimen. After confirming capability...