Amplitude degradation of time-reversed pulses in nonlinear absorbing thermoviscous fluids by Hallaj, I, Cleveland, R, Barbone, P, Kargl, S, Roy, R

“…Further analysis of the nonlinear wave equation shows that amplification of a time-reversed pulse at the array elements also leads to a violation of time reversal even for lossless nonlinear acoustics. Numerical simulations are used to illustrate the effect of nonlinearity on the ability of a time-reversal system to effectively focus on a target in an absorbing fluid medium. …”

Identification of a parametric loudspeaker system using an adaptive Volterra filter by Ji, Wei, Gan, Woon-Seng

“…Unlike the conventional loudspeaker, the nonlinear characteristic of a parametric loudspeaker system is dependent on several primary parameters in nonlinear acoustics, which include the initial pressure of the primary waves, the observing distance and angle, as well as ambient temperature and relative humidity. …”
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Audio projection : directional sound and its applications in immersive communication by Gan, Woon-Seng, Kuo, Sen M., Tan, Ee-Leng.

“…These developments rely heavily on the latest techniques in acoustics and audio signal processing to overcome some of the current limitations in nonlinear acoustics modeling and ultrasonic transducers' technology. …”
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A comparative analysis of preprocessing methods for the parametric loudspeaker based on the Khokhlov-Zabolotskaya-Kuznetsov equation for speech reproduction by Gan, Woon-Seng, Yang, Jun., Ji, Peifeng., Tan, Ee-Leng.

“…However, the Berktay's farfield solution is an approximated model of nonlinear acoustic propagation. To determine the effectiveness of these methods, we analyze various preprocessing methods theoretically for directional speech reproduction using the Khokhlov-Zabolotskaya-Kuznetsov (KZK) equation, which provides a more accurate model of nonlinear acoustic propagation. …”
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Psychoacoustic signal processing techniques in bass perception enhancement by Karnapi, Furi Andi.

“…The utilization of parametric array in air to reproduce highly directional audible beam has drawn a lot of interests from nonlinear acoustic researchers. This new way of sound reproduction has several weaknesses compared to conventional way of sound reproduction.…”
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Nonlinear targeted energy transfer: state of the art and new perspectives by Vakakis, Alexander F., Gendelman, Oleg V., Bergman, Lawrence A., Mojahed, Alireza, Gzal, Majdi

“…Four such emerging research fields are discussed, namely (i) the new and promising concept of intermodal targeted energy transfer, (ii) the implementation of TET in nonlinear acoustic metamaterials, (iii) the break of classical reciprocity in elastodynamics in the context of TET, and (iv) the role of TET on the bandwidth of general classes of nonlinear resonators. …”
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Modeling the propagation of nonlinear three-dimensional acoustic beams in inhomogeneous media. by Jing, Y, Cleveland, R

“…The code was validated with measurements of the nonlinear acoustic field generated by a phased array transducer operating at 2.5 MHz in water. …”

Design of parametric loudspeaker by Gao, Huiying

“…Based on parametric array theory and nonlinear acoustic interaction theory, a parametric loudspeaker (a type of directional sound generator) was designed and implemented in this project. …”
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Ultrasonic liquid metal processing: The essential role of cavitation bubbles in controlling acoustic streaming by Lebon, G, Tzanakis, I, Pericleous, K, Eskin, D, Grant, P

“…The flow was calculated by solving the transient Reynolds-Averaged Navier-Stokes equations with a source term representing ultrasonic excitation implemented from the predictions of a nonlinear acoustic model. Comparisons with the measured flow field from Particle Image Velocimetry (PIV) water experiments revealed good agreement in both velocity magnitude and direction at two power settings, supporting the validity of the model for acoustic streaming in the presence of cavitating bubbles. …”

Simulation of nonlinear propagation of biomedical ultrasound using PZFlex and the Khokhlov-Zabolotskaya-Kuznetsov (KZK) Texas code by Qiao, S, Jackson, E, Coussios, C, Cleveland, R

“…Nonlinear acoustics plays an important role in both diagnostic and therapeutic applications of biomedical ultrasound and a number of research and commercial software packages are available. …”

Sound from ultrasound : the parametric array as an audible sound source by Pompei, F. Joseph (Frank Joseph), 1973-

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Passive acoustic mapping using data-adaptive beamforming based on higher-order statistics by Lyka, E, Coviello, CM, Paverd, C, Gray, MD, Coussios, C-C

“…Sources of nonlinear acoustic emissions, particularly those associated with cavitation activity, play a key role in the safety and efficacy of current and emerging therapeutic ultrasound applications, such as oncological drug delivery, blood-brain barrier opening and histotripsy. …”

Acoustic Properties of Lanthanum-Samarium Phosphate Glasses by Hassan, Senin, Abd. Aziz, Sidek, G. A., Saunders

“…Possible. sources of the different effect of La:>+ and Sm3+ modifiers on the nonlinear acoustic properties of metaphosphate glasses are discussed.…”
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Interaction of mechanical and thermal lesions induced by high intensity focused ultrasound (HIFU) by Gao, Xiaobin

“…In order to achieve our goals, nonlinear acoustic propagation of a HIFU burst was first simulated using KZK equation. …”
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Full modeling of high-intensity focused ultrasound and thermal heating in the kidney using realistic patient models by Suomi, V, Jaros, J, Treeby, B, Cleveland, R

“…In this study, the efficacy of renal HIFU therapy was studied using a nonlinear acoustic and thermal simulations in three patients. …”

Full modelling of high-intensity focused ultrasound and thermal heating in the kidney using realistic patient models by Suomi, V, Jaros, J, Treeby, B, Cleveland, R

“…In this study, the efficacy of renal HIFU therapy was studied using nonlinear acoustic and thermal simulations in three patients. …”

The (travel) times they are a changing : a computational framework for the diagnosis of non-alcoholic fatty liver disease (NAFLD) by Benjamin, Alex (Alex Robert)

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The feasibility of ultrasound elastography in monitoring high-intensity focused ultrasound therapy by Suomi, V

“…</p> <p>A second barrier for HIFU is the need to reliably deliver acoustic energy to the target. Nonlinear acoustic simulations were conducted using patient derived computed tomography (CT) data to evaluate the HIFU therapy in the kidney. …”

High intensity focused ultrasound (HIFU) ablation using the frequency sweeping excitation by Wang, Mingjun

“…First, to better understand the propagation of HIFU burst in the biological tissue, an angular spectrum approach (ASA) with a second-order operator splitting was proposed to simulate the three-dimensional nonlinear acoustic field of a phased-array HIFU transducer in a multiple layered media with focus steering over a wide range and the generation of multiple foci. …”
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