Nonlinear acoustics

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Non-linear acoustics is a branch of physics dealing with sound waves being distorted as they travel. (Wikipedia.org)






Conferences related to Nonlinear acoustics

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2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted papers will be peer reviewed. Accepted high quality papers will be presented in oral and postersessions, will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE


2020 59th IEEE Conference on Decision and Control (CDC)

The CDC is the premier conference dedicated to the advancement of the theory and practice of systems and control. The CDC annually brings together an international community of researchers and practitioners in the field of automatic control to discuss new research results, perspectives on future developments, and innovative applications relevant to decision making, automatic control, and related areas.


2020 IEEE 16th International Workshop on Advanced Motion Control (AMC)

AMC2020 is the 16th in a series of biennial international workshops on Advanced Motion Control which aims to bring together researchers from both academia and industry and to promote omnipresent motion control technologies and applications.


2020 IEEE International Conference on Systems, Man, and Cybernetics (SMC)

The 2020 IEEE International Conference on Systems, Man, and Cybernetics (SMC 2020) will be held in Metro Toronto Convention Centre (MTCC), Toronto, Ontario, Canada. SMC 2020 is the flagship conference of the IEEE Systems, Man, and Cybernetics Society. It provides an international forum for researchers and practitioners to report most recent innovations and developments, summarize state-of-the-art, and exchange ideas and advances in all aspects of systems science and engineering, human machine systems, and cybernetics. Advances in these fields have increasing importance in the creation of intelligent environments involving technologies interacting with humans to provide an enriching experience and thereby improve quality of life. Papers related to the conference theme are solicited, including theories, methodologies, and emerging applications. Contributions to theory and practice, including but not limited to the following technical areas, are invited.


2020 IEEE Radio and Wireless Symposium (RWS)

RWW2020 will be an international conference covering all aspects of radio and wireless. RWW2020's multidisciplinary events will bring together innovations that are happening across the broad wireless spectrum. RWS2020, this conference application, acts as the main conference for the entire RWW of events that includes the following conferences: PAWR2020, SiRF2020, WiSNet2020, and TWiOS2020 (IEEE Topical Conference on RF/microwave Power Amplifiers, IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, IEEE Topical Conference on Wireless Sensors and Sensor Networks, and IEEE Topical Workshop on the Internet of Space IoS, respectively). In addition to traditional podium presentations and poster sessions, tracks for IEEE Distinguished Lectures, Sunday half-day workshops, Monday panels, and a demo session are planned. A RWW2020 plenary talk are a parallel IoT Summit are planned. A student competition is also planned.

  • 2019 IEEE Radio and Wireless Symposium (RWS)

    This is a conference with a focus on wireless components, applications, and systems that impact both our current and future life style. The conference's main niche is to bring together technologists, circuit designers, system designers, and entrepreneurs at a single event. It was and is the place where these worlds meet, where new processes and systems can be benchmarked against the needs of circuit designers at the bleeding edge of RF systems, where today's design compromises can trigger tomorrow's advanced technologies. Where dreams can become a reality. RWS is the cornerstone conference for Radio Wireless Week.

  • 2018 IEEE Radio and Wireless Symposium (RWS)

    This is a set of five conferences with a focus on wireless components, applications, and systems that effect both now and our future life style. These conferences main niche is to bring together technologists, circuit designers, system designers, and entrepreneurs at a single event. It was and is the place where these worlds meet, where new processes and systems can be benchmarked against the needs of circuit designers at the bleeding edge of RF systems, where today’s design compromises can trigger tomorrow’s advanced technologies. Where dreams can become a reality.

  • 2017 IEEE Radio and Wireless Symposium (RWS)

    This is a set of five conferences with a focus on wireless components, applications, and systems that effect both now and our future life style. These conferences main niche is to bring together technologists, circuit designers, system designers, and entrepreneurs at a single event. It was and is the place where these worlds meet, where new processes and systems can be benchmarked against the needs of circuit designers at the bleeding edge of RF systems, where today’s design compromises can trigger tomorrow’s advanced technologies. Where dreams can become a reality.

  • 2016 IEEE Radio and Wireless Symposium (RWS)

    This is a set of five conferences with a focus on wireless components, applications, and systems that effect both now and our future life style. These conferences main niche is to bring together technologists, circuit designers, system designers, and entrepreneurs at a single event. It was and is the place where these worlds meet, where new processes and systems can be bench-marked against the needs of circuit designers at the bleeding edge of RF systems, where today

  • 2015 IEEE Radio and Wireless Symposium (RWS)

    This is a set of five conferences with a focus on wireless components, applications, and systems that effect both now and our future life style. These conferences main niche is to bring together technologists, circuit designers, system designers, and entrepreneurs at a single event. It was and is the place where these worlds meet, where new processes and systems can be benchmarked against the needs of circuit designers at the bleeding edge of RF systems, where today

  • 2014 IEEE Radio and Wireless Symposium (RWS)

    RWS focuses on the intersection between radio systems and wireless technology, which creates a unique forum for engineers to discuss hardware design and system performance of the state -of-the-art wireless systems. Includes an expanded program on the latest information on wireless communications and networking, and associated enabling technologies as new services and applications emerge.

  • 2013 IEEE Radio and Wireless Symposium (RWS)

    RWS focuses on the intersection between radio systems and wireless technology, which creates a unique forum for engineers to discuss hardware design and system performance of the state-of-the-art wireless systems. Includes an expanded program on the latest information on wireless communications and networking, and associated enabling technologies as new services and applications emerge.

  • 2012 IEEE Radio and Wireless Symposium (RWS)

    RWS focuses on the intersection between radio systems and wireless technology, which creates a unique forum for engineers to discuss hardware design and system performance of the state-of-the-art wireless systems. Includes an expanded program on the latest information on wireless communications and networking, and associated enabling technologies as new services and applications emerge.

  • 2011 IEEE Radio and Wireless Symposium (RWS)

    All aspects of components and systems related to radio and wireless networks.

  • 2010 IEEE Radio and Wireless Symposium (RWS)

    RWS focuses on the intersection between radio systems and wireless technology, which creates a unique forum for engineers to discuss various aspects of wireless communication systems and the state-of-the-art in both fields by exploring the connections between hardware design and system performance.

  • 2009 IEEE Radio and Wireless Symposium (RWS)

    This symposium highlights the state of the art of hardware and systems of radio and wireless

  • 2008 IEEE Radio and Wireless Symposium (RWS)

  • 2007 IEEE Radio and Wireless Symposium (RWS)

  • 2006 IEEE Radio and Wireless Symposium (RWS)

  • 2004 IEEE Radio and Wireless Conference - (RAWCON 2004)

  • 2003 IEEE Radio and Wireless Conference - (RAWCON 2003)

  • 2002 IEEE Radio and Wireless Conference - (RAWCON 2002)

  • 2001 IEEE Radio and Wireless Conference - (RAWCON 2001)

  • 2000 IEEE Radio and Wireless Conference - (RAWCON 2000)

  • 1999 IEEE Radio and Wireless Conference - (RAWCON '99)

  • 1998 IEEE Radio and Wireless Conference - (RAWCON '98)


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Periodicals related to Nonlinear acoustics

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Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Audio, Speech, and Language Processing, IEEE Transactions on

Speech analysis, synthesis, coding speech recognition, speaker recognition, language modeling, speech production and perception, speech enhancement. In audio, transducers, room acoustics, active sound control, human audition, analysis/synthesis/coding of music, and consumer audio. (8) (IEEE Guide for Authors) The scope for the proposed transactions includes SPEECH PROCESSING - Transmission and storage of Speech signals; speech coding; speech enhancement and noise reduction; ...


Automatic Control, IEEE Transactions on

The theory, design and application of Control Systems. It shall encompass components, and the integration of these components, as are necessary for the construction of such systems. The word `systems' as used herein shall be interpreted to include physical, biological, organizational and other entities and combinations thereof, which can be represented through a mathematical symbolism. The Field of Interest: shall ...


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


Control Systems Technology, IEEE Transactions on

Serves as a compendium for papers on the technological advances in control engineering and as an archival publication which will bridge the gap between theory and practice. Papers will highlight the latest knowledge, exploratory developments, and practical applications in all aspects of the technology needed to implement control systems from analysis and design through simulation and hardware.


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Most published Xplore authors for Nonlinear acoustics

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Xplore Articles related to Nonlinear acoustics

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Experimental characteristics of elastic nonlinearity in KRS-5 and NaBi(MoO<sub>4</sub>)<sub>2</sub> crystals

1994 Proceedings of IEEE Ultrasonics Symposium, 1994

The effects of elastic nonlinearity in KRS-5 and NaBi(MoO4 )2 are under discussion. Under rather low power of input signal (<1 W), high acoustic harmonics with frequencies up to 2.5 GHz in KRS-5 crystal and up to 5 GHz in NaBi(MoO4)2 were detected. The theoretical and experimental spatial dependences for acoustic harmonics under different power levels of input signal are ...


Development of a multichannel ultrasonic interferometer for the measurements under high pressures and its application to biomolecular studies

IEEE 1988 Ultrasonics Symposium Proceedings., 1988

A description is given of a device that comprises four parallel fixed-path interferometric cells with a volume of 0.2 cc each. This device provides relative measurements of sound velocity with an error of about 10/sup -3/ to 10/sup -4/% in the pressure range of 1 to 2500 bar. The specific increments of the nonlinearity acoustic parameter B/A, for different biomolecular ...


Time reversal invariance of nonlinear acoustic wave propagation in weakly viscous media

1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027), 1999

Time Reversal Mirrors (TRM) are usually used in a low power regime. However, their potential applications in such various fields as hyperthermia or lithotripsy implies to investigate their behavior in a higher power regime. In such high power configurations, nonlinearities have to be taken into account. If one considers the acoustic wave equation in a non viscous medium [for example, ...


Direction of arrival estimation based on nonlinear microphone array

2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221), 2001

This paper describes a new method for estimating the direction of arrival (DOA) using a nonlinear microphone array based on complementary beamforming. Complementary beamforming is based on two types of beamformers designed to obtain complementary directivity patterns with each other. In this system, since the resultant directivity pattern is proportional to the product of these directivity patterns, the proposed method ...


P3G-1 3D Time-Domain Modeling of Nonlinear Medical Ultrasound with an Iterative Green's Function Method

2006 IEEE Ultrasonics Symposium, 2006

A full-wave 3D time domain algorithm is presented that calculates the nonlinear acoustic wavefield of medical phased array transducers emitting an arbitrarily steered, focused and apodized beam. The algorithm can be used for computer simulation studies of the occurring second and higher harmonic wavefields in these configurations and for the optimization of the transducer design. It is based on the ...


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Educational Resources on Nonlinear acoustics

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IEEE.tv Videos

IMS 2011 Microapps - Beyond the S-Parameter: The Benefits of Nonlinear Device Models
IMS 2011 Microapps - Panel Session: Nonlinear Measurements
Surround Sound Headphones For Realistic Gaming
MicroApps: 200W RF Power Amplifer Design using a Nonlinear Vector Network Analyzer and Measured Load-Dependent X-Parameters (2) (Agilent Technologies)
Nonlinear Dynamics and Chaos for Flexible, Reconfigurable Computing - IEEE Rebooting Computing 2017
IMS 2011 Microapps - STAN Tool: A New Method for Linear and Nonlinear Stability Analysis of Microwave Circuits
ICASSP 2012 - Opening Ceremony
Nonlinear Material Responses and Their Characterization: An IPC Keynote with Eric Van Stryland
IMS MicroApps: Nonlinear Co-Simulation with Real-Time Channel Measurements
ICASSP 2010 - New Signal Processing Application Areas
What's New in Digital Predistortion
Envelope Time-Domain Characterizations to Assess In-Band Linearity Performances of Pre-Matched MASMOS Power Amplifier: RFIC Interactive Forum 2017
Green Radar State of Art: theory, practice and way ahead.
ICASSP 2012 Plenary-Dr. Karlheinz Brandenburg
Fragility of Interconnected Cyber-Physical Systems - Marios M. Polycarpou - WCCI 2016
ICASSP 2011 Trends in Machine Learning for Signal Processing
Neuromorphic Mixed-Signal Circuitry for Asynchronous Pulse Processing Neuromorphic Mixed-Signal Circuitry for Asynchronous Pulse Processing - Peter Petre: 2016 International Conference on Rebooting Computing
ICASSP 2011 Trends in Multimedia Signal Processing
Micro-Apps 2013: Advances in Load Pull Simulation
ICASSP 2011 Trends in Design and Implementation of Signal Processing Systems

IEEE-USA E-Books

  • Experimental characteristics of elastic nonlinearity in KRS-5 and NaBi(MoO<sub>4</sub>)<sub>2</sub> crystals

    The effects of elastic nonlinearity in KRS-5 and NaBi(MoO4 )2 are under discussion. Under rather low power of input signal (<1 W), high acoustic harmonics with frequencies up to 2.5 GHz in KRS-5 crystal and up to 5 GHz in NaBi(MoO4)2 were detected. The theoretical and experimental spatial dependences for acoustic harmonics under different power levels of input signal are presented. The influence of signal level on the attenuation coefficient for acoustic waves is shown. Based on the experimental data, a waveform of deformed wave is synthesized. Some data on the measurement conditions and the parameters of elastic nonlinearity in several known acousto-optic materials are presented

  • Development of a multichannel ultrasonic interferometer for the measurements under high pressures and its application to biomolecular studies

    A description is given of a device that comprises four parallel fixed-path interferometric cells with a volume of 0.2 cc each. This device provides relative measurements of sound velocity with an error of about 10/sup -3/ to 10/sup -4/% in the pressure range of 1 to 2500 bar. The specific increments of the nonlinearity acoustic parameter B/A, for different biomolecular compounds (nucleotides, amino acids, and proteins), have been measured. The error of relative measurements of B/A is less than 0.5%.<<ETX>>

  • Time reversal invariance of nonlinear acoustic wave propagation in weakly viscous media

    Time Reversal Mirrors (TRM) are usually used in a low power regime. However, their potential applications in such various fields as hyperthermia or lithotripsy implies to investigate their behavior in a higher power regime. In such high power configurations, nonlinearities have to be taken into account. If one considers the acoustic wave equation in a non viscous medium [for example, Westerfeld's equation], the time reversal invariance holds. In a non linear regime, the shape of a sinusoid emitted by an acoustic source changes continuously during propagation as energy is transferred to harmonics. If this distorted signal is time reversed after some propagation distance and remitted in the opposite direction, it will suffer an inverse shape distortion during the propagation and finally recover a perfect sinusoidal shape. This property holds as long as the shock distance is not reached, otherwise the shock discontinuity implies an irreversible change of the entropy and the time reversal invariance is broken. The experimental evidence of such phenomenon is here presented. The experimental results are compared with 1D numerical simulations of Burgers equation.

  • Direction of arrival estimation based on nonlinear microphone array

    This paper describes a new method for estimating the direction of arrival (DOA) using a nonlinear microphone array based on complementary beamforming. Complementary beamforming is based on two types of beamformers designed to obtain complementary directivity patterns with each other. In this system, since the resultant directivity pattern is proportional to the product of these directivity patterns, the proposed method can be used to estimate DOAs even when the number of sound sources is equal to or exceeds that of microphones. First, DOA-estimation experiments are performed using actual devices in real acoustic environments. The results clarify that DOA estimation for two sound sources can be accomplished by the proposed method with only two microphones. Also, by comparing the resolutions of DOA estimation by the proposed method and by the conventional minimum variance method, we can show that the performance of the proposed method is superior to that of the conventional method.

  • P3G-1 3D Time-Domain Modeling of Nonlinear Medical Ultrasound with an Iterative Green's Function Method

    A full-wave 3D time domain algorithm is presented that calculates the nonlinear acoustic wavefield of medical phased array transducers emitting an arbitrarily steered, focused and apodized beam. The algorithm can be used for computer simulation studies of the occurring second and higher harmonic wavefields in these configurations and for the optimization of the transducer design. It is based on the iterative employment of a Green's function (or impulse response) method with the nonlinearity included as a contrast source. Several comparisons with validated algorithms are made, showing a perfect agreement

  • Scattering of Sound by Sound in Solids

    None

  • Principles of ultrasonic velocimetry by means of nonlinear interaction of phase conjugate waves

    The results of using of wave phase conjugation in Doppler velocimetry are reported. The increasing of sensitivity of Doppler sonar due to phase super resolution at low frequency emission by non-resonance interaction of ultrasonic waves is demonstrated.

  • Linear and nonlinear acoustic parameters measurements in plates with various moisture contents

    Variation of the moisture content is known to modify many of the mechanical properties of solids. For this reason, the estimation of the absorbed quantity of water is a subject of growing interest in characterization of materials. In this work, the water content in phenolic resin plates, placed under variable relative moisture conditions, is investigated through linear and nonlinear acoustic parameter measurements. Linear measurements are performed using an insertion/substitution spectroscopy technique. Nonlinear measurements consist of an evaluation of the phase modulation obtained by a collinear interaction between a high frequency tone burst and a low frequency wave. Results show that many of the studied parameters have a good sensitivity to the absorbed water content.

  • Simulations of the nonlinear acoustic pressure field without using the parabolic approximation

    The popular KZK equation has been widely used to model the nonlinear acoustic wave field. However, since it is based on a parabolic approximation, it has various limitations, both at close distances from the transducer and at large radial extents from the beam axis or, in case of phased arrays, at steering angles larger than, say, 20/spl deg/. The purpose of this work is to model the nonlinear acoustic wave field without using the parabolic approximation. The model is based on the full nonlinear wave equation known as the Westervelt equation. This equation is solved numerically using an explicit finite difference scheme with fourth order centred space differences and second order centered or second order backward time differences. To check the validity of our model, numerical results for the lossless linear case were compared to analytical results. Moreover, the nonlinear beam profiles were compared to the results of a numerical solution of the KZK equation and to hydrophone measurements performed with a single element, unfocused transducer with a radius of 6.35 mm and a centre frequency of 1 MHz. We used a pulsed excitation of 6 cycles with pressure levels of 40, 220 and 500 kPa. The axial beam profiles and the lateral beam profiles at several distances were measured. For a low drive level, our numerical predictions show a good agreement with the analytic solution as well as with the measured data for all fundamental frequency beam profiles. At higher excitations, our simulations give a significant second harmonic component at 15 db below the fundamental level, which is in agreement with the measurements. The numerical data reproduces all the features at the fundamental and harmonic frequency beam profiles. For regions where the KZK equation is known to be less accurate, our model performs better. The sidelobes created at larger observation angles (above 20/spl deg/) and the nearfield variations are accurately reproduced. The performance of our model is good since it predicts accurately the harmonic field at any position with respect to the transducer. It can be used for the whole scanning sector that is required for harmonic beam profile simulations for phased arrays.

  • Non-linear interaction of binaural stimuli

    Nonlinear interaction in the acoustic brainstem response can be demonstrated by subtracting the response to binaural stimulation from the sum of responses to monaural stimulation. The resulting binaural difference waveform is nonflat during peaks IV and/or V of the acoustic brainstem response. The nonlinearity probably arises at some neural elements which lie in the ascending auditory brainstem and which receive inputs from both ears. The growth of the binaural difference was tested in rats under an increasing-stimulus-level series and the results were compared with the responses of two hypothetical models that can account for the binaural difference generation. The data are in good agreement with one of the models, which assumes that binaural difference is generated from contralateral inhibition under binaural stimulation.<<ETX>>



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