23rd International Congress on Acoustics, Sept. 09-13, 2019
integrating 4th EAA Euroregio 2019

Plenary Lectures

Marion Burgess

Sound and Noise around us

Sound is fundamental to our social structure from the basic need for communication through to the expression of our emotions in music. Sound at too high a level can cause damage to hearing and it is the role of society, workplace management and governments to ensure that the community is aware of the risk and that this risk is minimised by implementing noise control and noise management.  
Extensive research has shown that sound levels that commonly occur in our cities and rural areas and that may be below the damage risk level can create annoyance and lead to various health effects.  Sometimes we may desire silence.  But generally, there is a level of noise that we consider acceptable; when the noise from outside does not interfere with what we are doing at that time.  So limits and control measures need to be implemented to keep community noise within the acceptable range while still allowing for the necessary business, industry, transportation and entertainment to continue.  Engineering noise control at source is a solution for some problems.  For others an acceptable environment may be achieved by coupling a deep understanding of the effects of noise with the application of some of many tools available using modern technology.  Promotion of best practices in the wide community is one of the goals for the activities that are part of the ICA organised International Year of Sound in 2020.

> Short biography [read more]

Marion Burgess graduated in Physics from Sydney University and after a short period in medical physics began working in acoustics.  Initially this was in a building acoustics laboratory and she then moved to the University of New South Wales.  For over 40 years she has primarily worked in the area of noise: both environmental and workplace.  She considers herself fortunate to have been able to have a good blend teaching, research and consulting which has given her diverse experiences.  She was awarded the Order of Australia in 2015 for significant service to science in the field of acoustics, particularly noise management, and to professional scientific organisations.  She has published widely and regularly participated in national and international acoustics activities.  She has been involved with the journal Acoustics Australia for many decades and is currently the chief editor.  She is the current President of the I-INCE and Past President of the ICA.  She has been involved from the outset in the ICA goal for an International Year of Sound and the ICA President Michael Taroudakis and Marion are leading the team to bring this to fruition in 2020.

Maria Heckl

Thermoacoustic instabilities: physical mechanisms and mathematical modelling

If a flame is put into an acoustic resonator, an escalating interaction between the flame's heat release and the acoustic field can occur, giving rise to intense pressure oscillations. This phenomenon is termed "thermoacoustic instability". It occurs in combustion systems that have a continuously burning flame, such as gas turbines, jet aeroengines, boiler and heating systems, furnaces and rockets. Thermoacoustic instabilities are a serious problem because they can lead to excessive structural vibrations, fatigue, and even catastrophic hardware damage. The escalating flame-sound interaction occurs in tandem with other physical mechanisms, leading to a complex web of interactions, most of which are nonlinear. They include flame-vortex interactions, flame response to fluctuations in fuel concentration, entropy waves, flame-structure interactions, and others.

The development of low-pollution combustion systems is very important for our environment. However, such combustion systems are particularly prone to thermoacoustic instabilities. Progress with developing combustion systems that are immune to these is hampered by insufficient physical insight. Efforts to gain further insight are going on by researchers worldwide using experimental, analytical and numerical tools. This talk aims to give an overview of the key physical mechanisms involved in thermoacoustic instabilities and will pay particular attention to mathematical modelling approaches.

> Short biography [read more]

School of Chemical and Physical Sciences, Faculty of Natural Sciences, Keele University, U.K.

Maria Heckl graduated in Physics at the Technical University in Berlin. She completed her PhD on "Heat sources in acoustic resonators" in at the University of Cambridge. Her current position is Professor of Engineering Mathematics at Keele University. Her research is interdisciplinary, and both applied and fundamental. She has over 30 years research experience in physical acoustics, in particular interaction of sound waves with flames, with structures, and with hydrodynamic effects. She has a patent on "reheat buzz control". She has over 80 publications in journal and conference proceedings.  Also, she has been invited to dozens of seminar talks all over the world. She has received major research grants, in particular two large EU-funded Marie Curie Projects:

  • TANGO ("Thermoacoustic and Aeroacoustic Nonlinearities in Green combustors with Orifice structures", duration: 2012 – 2016, 15 PhD positions, 12 network partners, total budget: €3.74 million);
  • POLKA ("POLlution Knowhow and Abatement", duration 2019 – 2023, 15 PhD positions, 16 network partners, total budget: €4.02 million).

She is President elect of the International Institute of Acoustics and Vibration (IIAV), and serves on the Editorial Boards of the Journal of Sound and Vibration and of the International Journal of Spray and Combustion Dynamics.

Shrikanth Narayanan

Sounds of the human vocal instrument

The vocal tract is the universal human instrument played with great dexterity to produce the elegant acoustic structuring of speech, song and other sounds to communicate intent and emotions. The sounds produced by the vocal instrument also carry crucial information about individual identity and the state of health and wellbeing. A longstanding research challenge has been in improving the understanding of how vocal tract structure and function interact, and notably in illuminating the variant and invariant aspects of speech (and beyond) within and across individuals.  The first part of the talk will highlight engineering advances that allow us to perform investigations on the human vocal tract in action-- from capturing the dynamics of vocal production using novel real-time magnetic resonance imaging to machine learning based articulatory-audio modeling--to offer insights about how we produce sounds with the vocal instrument. The second part of the talk will highlight some scientific, technological and clinical applications using such multimodal data driven approaches in the study of the human vocal instrument.

> Short biography [read more]

Shrikanth (Shri) Narayanan the Niki & C. L. Max Nikias works as Chair in Engineering at the University of Southern California, where he is Professor of Electrical Engineering, and jointly in Computer Science, Linguistics, Psychology, Neuroscience, Otolaryngology and Pediatrics, Director of the Ming Hsieh Institute and Research Director of the Information Sciences Institute. Prior to USC he was with AT&T Bell Labs and AT&T Research. His research focuses on human-centered information processing and communication technologies.  He is a Fellow of the Acoustical Society of America, IEEE, ISCA, the American Association for the Advancement of Science (AAAS), the Association for Psychological Science, the American Institute for Medical and Biological Engineering (AIMBE) and the National Academy of Inventors.  He is a recipient of several honors including the 2015 Engineers Council’s Distinguished Educator Award, a Mellon award for mentoring excellence, the 2005 and 2009 Best Journal Paper awards from the IEEE Signal Processing Society and serving as its Distinguished Lecturer for 2010-11, a 2018 ISCA Best Journal Paper award, and serving as an ISCA Distinguished Lecturer for 2015-16 and the Willard R. Zemlin Memorial Lecturer for ASHA in 2017. He has published over 800 papers and has been granted seventeen U.S. patents.

Jérémie Voix

The ear at the age of IoT

Jérémie Voix

At this age of Internet of Things (IoT), wearables are now everywhere, sometimes even in your earcanal. The researchteam at the NSERC-EERS Industrial Research Chair in In-Ear Technologies (CRITIAS) has been actively developingvarious in-ear technologies designed to complement the human ear: from ”smart” hearing protection against industrialnoise, to advanced communication systems, to hearing health monitoring devices using otoacoustic emission to in-earBrain Computer Interface. In addition, more fundamental research has been conducted, namely, the micro-harvesting ofelectrical energy from inside the earcanal to power future auditory wearables. The current state of research is presentedin this keynote lecture, together with some recent developments conducted through the CRITIAS industrial researchchair and other research groups around the globe.

> Short Biography [read more]

Professor Jérémie Voix is an acoustics specialist with over 20 years of experience in occupational noise control. He has authored or co-authored over 100 scientific publications as well as over a dozen awarded patents and contributed significantly to several American (ANSI S12/WG11), Canadian (CSA Z94) and ISO (TC43/WG17) standards. Professor Voix is President of the Canadian Acoustical Association (CAA), and Associate Director (Scientific and technological research) at the Centre for Interdisciplinary Research in Music Media and Technology (CIRMMT), housed at McGill University's Schulich School of Music, where he is also an Adjunct Professor. He is as well an associate member of the International Laboratory for Brain, Music and Sound Research (BRAMS) and co-founder of the ÉTS-IRSST joint infrastructure laboratory for acoustic research (ICAR-Infrastructure commune en acoustique pour la recherche). Prof. Voix leads the NSERC-EERS Industrial Research Chair in In-Ear Technologies (CRITIAS) for the development of leading-edge technology combining in-ear instrumented hardware platforms with audio signal processing and biosignal extraction algorithms to enable its Canadian industrial partner, EERS Global Technologies Inc., to commercialize in-ear wearables for hearing protection, hearing aid, two-way communication and brain-computer interfaces for industrial, military, consumer and medical markets.

Christopher Wiebusch & Tim Otto Roth

Astroparticle Immersive Synthesizer³ or how cosmic “ghost particles” inspire a novel concept of spatialisation of sound

imachination projects 2018

or [aiskju:b]  is a contemporary response to the ancient idea of a music of the spheres connecting cosmology and music in novel way. The sound laboratory with its 444 illuminated spherical speakers, which is presented in late Summer 2019 at the Ludwig Forum für Internationale Kunst in Aachen, adopts the form and arrangement of the weirdest telescope in the world: IceCube consists of 5160 light sensors that are frozen deep into the Antarctic ice shield at the South Pole, covering a full cubic kilometre of ice. The sensors register the tiny flashes of light that occur in the rare case of an interaction of a very special type of elementary particle: a neutrino. In our joint presentation we show the way how these “ghost particles” made their way from astro-particle physics to become the agents of a unique fundamental experiment in psychoacoustics, turning space into a sound generator in which the visitor becomes immersed.

> Short Biography of Christopher Wiebusch [read more]

III.Physikalisches Institut, RWTH Aachen University
Date and Place of Birth: 10.06.1966, Bonn Nationality: German

Scientific Education & Employment

  • 03/1992 Diplom in physics, RWTH Aachen
  • 12/1995 PhD in physics, RWTH Aachen
  • 02/1996 – 01/2001 Scientific assistant, DESY Zeuthen
  • 02/2001 – 04/2001 Scientific assistant, Humboldt Universität zu Berlin
  • 05/2001 – 03/2003 EP-Fellow, CERN, Genf
  • 04/2003 – 06/2006 Scientific assistant, Universität Wuppertal

Current Scientific Projects

  • since 07/2006 Professor for Experimental Physics, RWTH Aachen
  • since 2001 IceCube Neutrino Observatory (BMBF)
  • since 2006 Double-Chooz Experiment (DFG)
  • since 2011 Enceladus Explorer Project (DLR)
  • since 2014 JUNO neutrino observatory (DFG)

Administrative responsibilities

  • since 06/2012 Member of the IceCube publication committees
  • since 2003 Referee for scientific journals
  • since 2006 Reviews for funding agencies

Five important publications by Christopher Wiebusch

  • [CW1] M. G. Aartsen et al. Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector. Science, 342:1242856, 2013. arXiv:1311.5238, doi:10.1126/science.1242856.
  • [CW2] J. Abraham et al. Properties and performance of the prototype instrument for the Pierre Auger Observatory. Nucl. Instrum. Meth., A523:50–95, 2004. doi:10.1016/j.nima.2003.12.012.
  • [CW3] E. Andres et al. The AMANDA neutrino telescope: Principle of operation and first results. Astropart. Phys., 13:1–20, 2000. arXiv:astro-ph/9906203, doi:10.1016/S0927-6505(99) 00092-4.
  • [CW4] I. A. Belolaptikov et al. The Baikal underwater neutrino telescope: Design, performance and first results. Astropart. Phys., 7:263–282, 1997. doi:10.1016/S0927-6505(97)00022-4.
  • [CW5] Christopher H. Wiebusch. Observations of diffuse fluxes of cosmic neutrinos. In Thomas Gaisser (University of Delaware, USA) and Albrecht Karle (University of Wisconsin-Madison, USA), editor, Neutrino Astronomy -Current Status, Future Prospects. World Scientific, 2016. arXiv:1602.00239.
> Short Biography of Tim Otto Roth [read more]

imachination projects, Oppenau i. Schw./Cologne [D] www.imachination.net

Space plays a key role in the work of the conceptual artist and composer Tim Otto Roth (born in Oppenau/Black Forest in 1974), who combines art and science in novel ways. His expansive sound sculptures – such as Heaven’s Carousel, which consists of 36 rotating loudspeakers, or the water organ aura calculata – open up new aesthetic experiences and new directions in art by engaging with the latest scientific research. Roth’s compositional work uses space as an (additive) synthesizer in which tones emitted by acoustic sources distributed throughout a room fuse into site-specific sounds. Apart from his idiosyncratic approach to spatialising sound, Roth focuses on microtonal scales based on harmonics that can be derived from specific physical processes. He also experiments with mathematical principles of self-organisation which he renders into sound using sonic sculptures produced in his studio, or human agents such as a choir or a string orchestra. In 2012, Roth was a guest musician at the ZKM_Sound Dome in Karlsruhe. In June 2018, his sound installation SMART>SOS premiered at IRCAM in Paris.