WebParametric array had been one of the most popular research area in underwater acoustics for decades since Westervelt published his famous paper in 1963[1], and parametric array signal processing is still an active research area so far [2][3][4]. Parametric acoustic source is the most important source for high-resolution sub-bottom profiler,
Reflection of audio sounds generated by a parametric …
WebDec 22, 2014 · The parametric array loudspeaker (PAL) is an application of the parametric acoustic array in air [ 1 ]. It was discovered by Westervelt in the early 1960s that two … WebSep 27, 2024 · Abstract: In this paper, the audio sound field generated by a focusing parametric array loudspeaker (PAL) is investigated both numerically and experimentally. A computationally efficient method is developed to calculate the quasilinear solution of both the Westervelt and Kuznetsov equations. has stephen boss died
Low Frequency Audio Sound Field Generated by a Focusing Parametric …
WebIn this paper, the audio sound field generated by a focusing parametric array loudspeaker (PAL) is investigated both numerically and experimentally. A computationally efficient … WebSep 4, 2005 · This paper presents a method of steering audible sound beams generated by parametric arrays in air. A hybrid system consisting of combined electronical / mechanical phased array technique is... A parametric array, in the field of acoustics, is a nonlinear transduction mechanism that generates narrow, nearly side lobe-free beams of low frequency sound, through the mixing and interaction of high frequency sound waves, effectively overcoming the diffraction limit (a kind of spatial 'uncertainty principle') … See more Priority for discovery and explanation of the parametric array owes to Peter J. Westervelt, winner of the Lord Rayleigh Medal (currently Professor Emeritus at Brown University), although important experimental work … See more • H.C. Woodsum and P.J. Westervelt, "A General Theory for the Scattering of Sound by Sound", Journal of Sound and Vibration (1981), 76(2), 179-186. See more The foundation for Westervelt's theory of sound generation and scattering in nonlinear acoustic media owes to an application of Lighthill's equation for fluid particle motion. See more Practical applications are numerous and include: • underwater sound • medical ultrasound See more boon \\u0026 heyninck bv