Results 1 to 10 of about 6,805 (140)
Experimental and numerical study of Conoscopic Interferometry sensitivity for optimal acoustic pulse detection in ultrafast acoustics [PDF]
Photoacoustics, 2023 Conoscopic interferometry is a promising detection technique for ultrafast acoustics. By focusing a probe beam through a birefringent crystal before passing it through a polarizer, conoscopic interferences sculpt the spatial profile of the beam.
Martin Robin +5 more
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Performance Research and Optimization of Sound Insulation Hood of Air Compressor Unit
Applied Sciences, 2021 The noise control of a compressor has always been a hot spot in the field of industrial application. In this paper, the air inlet structure of the sound insulation hood of an air compressor unit was studied and improved. Acoustic finite element numerical
Huagen Wu +5 more
doaj +1 more source
Sensors, 2021 Respiratory activity is an important vital sign of life that can indicate health status. Diseases such as bronchitis, emphysema, pneumonia and coronavirus cause respiratory disorders that affect the respiratory systems.
Uduak Z. George +2 more
doaj +1 more source
Developing and evaluating a hybrid wind instrument [PDF]
, 2014 A hybrid wind instrument generates self-sustained sounds via a real-time interaction between a computed excitation model (such as the physical model of human lips interacting with a mouthpiece) and a real acoustic resonator.
Buys, Kurijn, Laney, Robin, Sharp, David
core +2 more sources
Methodology Of Experimental Investigations Of Valve Operation [PDF]
, 2019 Tightness, as well as the reliability of the valve plate, is a complex property of the effective operation of compressor cylinders of the first stage and, in general, gas-engine reciprocating compressors.
Seyidahmadov, N. S. (Natig)
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Modeling and Compensation of Nonlinear Distortion in Horn Loudspeakers [PDF]
, 1994 Horn loaded compression drivers are widely used in the area where high sound pressure levels together with good directivity characteristics are needed. Major disadvantage of this kind of drivers is the considerable amount of nonlinear distortion.
Berkhoff, Arthur P. +3 more
core +9 more sources
Accounting for Acoustic Damping in a Helmholtz Solver [PDF]
, 2017 Thermoacoustic Helmholtz solvers provide a cheap and efficient way of predicting combustion instabilities. However, because they rely on the inviscid Euler equations at zero Mach number, they cannot properly describe the regions where aerodynamics may ...
Miguel-Brebion, Maxence +3 more
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Experimental measurement of the nonlinearities of electrodynamic microphones [PDF]
, 2009 International audienceThis paper presents an experimental way of characterizing the nonlinearities of electrodynamic microphones used as acoustical sources. This functioning occurs for reciprocal calibration techniques.
Lemarquand, Guy +2 more
core +3 more sources
Miniature photonic-crystal hydrophone optimized for ocean acoustics
, 2010 This work reports on an optical hydrophone that is insensitive to hydrostatic pressure, yet capable of measuring acoustic pressures as low as the background noise in the ocean in a frequency range of 1 Hz to 100 kHz.
Gordon S. Kino +7 more
core +1 more source
Constant-pressure sound waves in non-Hermitian disordered media
, 2018 When waves impinge on a disordered material they are back-scattered and form a highly complex interference pattern. Suppressing any such distortions in the free propagation of a wave is a challenging task with many applications in a number of different ...
Brandstötter, Andre +5 more
core +2 more sources