Biographies of AES44 Presenters

Many thanks to all who contributed to the success of this conference!


Álvaro Barbosa

Álvaro Barbosa is an Associate Professor at the School of Arts from Oporto's Portuguese Catholic University (UCP), the Portuguese leading research and educational institution in the field of Science and Technology applied to the Arts. He holds a PhD degree in Computer Science and Digital Communication from Pompeu Fabra University in Barcelona, Spain and a Graduate Degree in Electronics and Telecommunications Engineering from Aveiro University in Portugal. His activity is mainly on the field of Music Technology, in which he worked for five years as a resident researcher at the Barcelona Music Technology Group (MTG). His recent research has mostly been developed at the UCP's Research Center for Science and Technology of the Arts(CITAR) and is focused on the study and development of experimental Network Music Systems, as well as in Interactive Sound-Design. He has also developed several artistic projects with special emphasis in Music Composition, Interactive Installations Design and Computer Animation. His work as a Researcher and an Artist has been extensively published internationally. In 2010 he undertook a Visiting Scholar Position at the Center for Computer Research in Music and Acoustics(CCRMA) from Stanford University and in 2011 he started collaborating as a Visiting Professor with the University of Saint Joseph in Macau-China.

Jeffrey Berryman 

Senior Scientist at Bosch Communications Systems, Jeff brings his dual information technology / audio background to a range of responsibilities in technology development and planning.  He is currently concentrating on media network architecture and standardization.

Nicolas Bouillot

Nicolas Bouillot (Ph.D., Conservatoire National des Arts et Métiers de Paris, 2006) is a post-doctoral researcher in the Shared Reality Lab, and a member of the Centre for Intelligent Machines at McGill University. His former interests in distributed systems, algorithms and music led to his development of the distributed virtual concert project (2002-2006). Motivated by multi-disciplinary research problems, he then contributed to the Audioscape project (2007-2009), in which mobile technologies and low-latency network streaming were used to support group collaboration in an outdoor augmented reality audio game. Bouillot is currently a researcher in the Open Orchestra project, in which he is developing a streaming engine dedicated to simulation of musical ensemble performance.

Nathan Brock

Nathan Brock is a researcher in networked audio, developing systems for distributed cinema post-production and networked media archives, and improving techniques for telematic musical performance. Dr. Brock is a research scientist at the University of California, San Diego, where he works at the California Institute for Telecommunications and Information Technology (CalIT2). His research and funding partners include Disney, Skywalker Sound, NTT, and DTS. Dr. Brock is also a composer of chamber and orchestral works, and an adjunct professor at the University of San Diego. 

Alexander Carot 

Besides a practical training in programming and electrical engineering, Dr. Alexander Carôt has actively been playing bass and the NS-Chapman-Stick in several rock, pop and jazz ensembles. In 2004 he received a german engineering diploma within an interdisciplinary study program in order to combine the arts and technology. Motivated by the passion for remote music performances with musicians in different places, he completed his PhD in computer science in 2009 at the University of Lübeck/Germany. In this context he developed the “Soundjack” software (, which has been used in numerous network music performances all over the world. In 2010 he has been appointed Full Professor in media computer science at the University of Applied Sciences, Anhalt, Germany. Besides continuously improving “Soundjack” in terms of signal latency, quality and user friendliness he is playing in the avant-garde-jazz project “Triologue” (http:/ In his recent research activities he is focusing on novel multimodal delay-optimized transmission approaches and the application of superluminal signal propagation based on quantum-mechanical effects.

Chris Chafe

Chafe is a composer, improvisor, cellist, and music researcher with an interest in computers and interactive performance. He has been a long-term denizen of the Center for Computer Research in Music and Acoustics where he is the center's director and teaches computer music courses. Three year-long periods have been spent at IRCAM, Paris, and The Banff Centre making music and developing methods for computer sound synthesis. The SoundWIRE project launched in 2000 involves real-time Internet concertizing with collaborators the world over. New tools for playing music together and research into latency factors continue to evolve. An active performer either on the net or physically present, his music is heard in Europe, the Americas and Asia. The five countries "Resonations" concert was hosted by the United Nations in Nov., 2009. CD's of works are available from Centaur Records. Gallery and museum music installations are continuing into their second decade with biological, medical and environmental "musifications" featured as the result of collaborations with artists, scientists and MD's. Recent new works include TQ11 "tomato quintet" for the transLife:media Festival at the National Art Museum of China and Phasor for contrabass and electronics.

João Cordeiro

João Cordeiro is a a PhD Researcher at the Research Center for Science and Technology of the Arts at Oporto Catholic University in Portugal

Andrew Eales

Andrew Eales is a Ph.D candidate in Computer Science at Rhodes University, Grahamstown, South Africa, studying control protocols for networked audio devices. He holds an M.Mus in composition from the University of Pretoria and an M.Sc in Computer Science from Rhodes University. Previously a faculty member at Fort Hare University and Rhodes University, he is currently a Senior Academic Staff member at the Wellington Institute of Technology, Wellington, New Zealand.

Richard Foss

Richard Foss is an associate professor in the Computer Science Department of Rhodes University, where he leads an audio networking research group. Richard is chair of the AES SC-02-12 audio networks working group.

John Grant

John Grant has been designing equipment to carry live media over digital networks since 1993. He chairs AESSC working-group SC-02-02 (Digital Input/Output Interfacing) and IEC Project Team 62379, which is developing the Common Control Interface for networked digital audio and video products, and is editor of ISO PDTR 29181-3 Future Network – Problem Statement and Requirements – Part 3: Switching and Routing. 

Kevin Gross

Kevin Gross conceived and developed the CobraNet system for transport of real-time, high-quality audio over Ethernet networks. He is a contributing member of the IEEE 802.1 Audio/Video Bridging (AVB) standards effort. He has helped QSC deploy their Q-LAN audio network.

Kevin has had a hand in the systems and network design in many prominent projects utilizing audio networking such as, Wembley stadium, The U.S. Capitol, the 2000 Olympics in Sydney and theme parks such as Disney's Animal Kingdom and Tokyo Disney Seas.

Kevin holds several patents, has written papers and articles and presented on numerous AV networking topics. In 2006 he was awarded an AES fellowship for his contributions to digital audio networking.

Robbie Gurdan

Robby Gurdan graduated with an Audio Engineer and Tonmeister (SAE) degree in 1987. He worked in the audio engineering field until 1998, engineering live events and recording. In the early nineties he became actively involved in audio control systems and audio control software. Later on he became involved in networked control systems. He is the founder and co-owner of C-Mexx Software (a company that mainly created commercially successful control applications for digital audio devices from companies like Yamaha, Roland, Soundcraft and Fostex). In 2006 Robby became the CTO of Uman GmbH in Düsseldorf Germany, and since 2011 is the MD of Uman Technologies Cape Town, South Africa. Together with Richard Foss, he holds six international patents in the field of networking and protocols, and is the co-author of the AES-X170 audio network control protocol draft standard. 

Stefan Heinzmann

Stefan Heinzmann is a freelancing consultant who has worked for a number of customers in professional audio in the past 20 years. Being a computer scientist by education, he prefers to work on system architecture problems, and on the boundary between soft- and hardware. He has contributed to the design of digital mixing consoles, digital audio interfaces and control frameworks. He currently devotes most of his time to RAVENNA, the real-time audio network framework by ALC NetworX.

Christian Hoene

Dr. Christian Hoene is a postdoc at the “Computer Networks and Internet” group at the University of Tübingen, Germany.  He is a researcher covering the areas of Internet based voice communication, wireless transmissions, location tracking, metering, accounting, and charging. Christian has studied at Technical University of Berlin in the TKN Group. He is the author of about 35 publications, multiple standard contributions, and has received one best paper award. Herr Hoene was also awarded in 2000 with Erwin Stephan Prize for passing his studies of computer engineering at the TU-Berlin with distinction. In 2001, he was a visiting scholar at the COMET Group of Prof. Campbell, Columbia University, New York. In 2005 he finished his Ph.D. studies on voice over WLAN also with distinction. He is supported within the elite programme for postdocs, which is funded by the Landesstiftung Baden-Württemberg. Since April 2008 he has been in charge of the main lectures because the chair of the Computer Networks and Internet group is vacant.

His scientific merits are affirmed by more than 650 citations and a Hirsch-factor of 12 according to the comprehensive database of Google Scholar. The results of his work have influenced the standardization of ITU-T Study Group 12 (appendix to ITU G.107), IEEE 802.11v working group and Internet Engineering Task Force. In the IETF, he is a main contributor and founding member of the IETF working group Codec.

He is in the TPC of the IEEE workshop on Bandwidth on Demand 2008 and 2010, the IEEE conferences CCNC 2010, NEW2AN 2009, ICC 2008/2009/2010, MELT 2010, and on ACM CoNEXT 2008 (Shadow) and a reviewer for ICC, Globecom, VTC, IEEE/ACM Transactions on Networking, IEEE Transactions on Wireless Communications, IEEE Transactions on Network and Service Management, IEEE Transactions on Industrial Informatics, IEEE Transactions on Audio, Speech and Language Processing, Elsevier Ad Hoc Networks Journal, Elsevier Computer Networks Journal, Elsevier Computer Communications Journal and other conferences and journals.

Dr. Hoene is a member of IEEE Comsoc, VDE and AES.

Axel Holzinger

Axel Holzinger was born in 1968 and received a Dipl.-Ing. in Electrical Engineering and Information Technology at Technische Universität München in 1993. After working on speech recognition systems for Siemens, he joined DAVID Systems GmbH as a hardware designer developing digital audio interfaces. Later he concentrated on software engineering in C and C++ developing device drivers and realtime onair software applications for audio and video playout. Since 2008 he joined ALC NetworX GmbH where his current field of work is network audio technology and the development of algorithms for low latency realtime audio distribution.

Osedum Igumbor

Osedum Igumbor is a PhD research student in the Audio Engineering Research Group at Rhodes University, South Africa. Over the past five years, he has investigated various audio control protocols, with initial investigations in firewire (IEEE 1394) networks, and more recently Ethernet AVB networks. In his current investigations, Osedum is looking into interoperability within audio networks of consumer and pro-audio devices irrespective of networking technology.

Lars Jonsson

Lars Jonsson was born in 1949 and received an M.Sc in Electronic Engineering at the Royal Institute of Technology in Stockholm in 1972. He joined the Research Team of Swedish Radio and worked with development of video and RF systems. Later he worked in operation and development at the Local Radio Company. He rejoined the SR development team in 1992. 

During the last decade, Lars Jonsson has worked with digital audio quality issues, archiving and the audio computer infrastructure within SR. He is a member of several working parties within the EBU and AES, and currently chairs the Audio Contribution over IP working group, ACIP within the EBU.

Jeff Koftinoff

Jeff Koftinoff has been working with Meyer Sound Canada on many aspects of digital audio systems since 1995 and was involved in the design of distributed audio processing systems such as the LCS LD-88 and LCS LX-300 matrix processing systems, the Galileo speaker processing system and the AVB based D-Mitri Digital Audio platform.  Jeff is currently the editor for the IEEE P1722a and IEEE P1722.1 AVB related projects. 

Sonja Langhans

Sonja Langhans (born 1980) graduated from the Technical University of Ilmenau in 2007 with an engineer’s degree (Diplom) in Media Technology. Since then, she is working at the Institut für Rundfunktechnik in Munich. As part of the department of Broadcast Network Technologies, she conducts research in the fields of Audio over IP (AoIP) and network management. As a member of the EBU ACIP (Audio Contribution over IP) Group and the I3P (Intercom over IP) Group, she is jointly responsible for EBU TECH 3326, the well-known de facto standard on audio over IP interoperability and the emerging I3P-interoperability standard. In the field of network management for broadcasters, Sonja Langhans gained experience by participating in a number of concept tests for new network technologies (such as MPLS). She is also evaluating commercial management systems regarding their suitability for broadcasters. Her latest research combines the AoIP with network management and deals with possible future replacements for audio routing matrices and the implications on the resulting audio network. 

Stefan Ledergerber

Stefan Ledergerber (born 1970) holds a masters degree in electrical engineering from the Swiss Federal Institute of Technology, Zürich (Switzerland). After his studies the mixing console manufacturer Studer employed him as hard- and firmware engineer. Soon he moved into the position of a project manager andlater on into product management/marketing where he was responsible for thespecification and design of the Vista series mixing consoles. In this role he also was heavily involved in the development of Studer’s VSP (Virtual Surround Panning). He then returned to the same university to make a masters degree in “Management, Technology and Economics”.

In 2007 Stefan Ledergerber became vice president for Research and Development for Soundcraft and Studer at Harman. Four years later he changed to Lawo (Germany), where he holds the same position as director of R&D for the Lawo Group. He is an AES member since 1992.

Todd Margolis

Todd Margolis is a transmedia producer of immersive artworks. He is currently the Technical Director of the Center for Research in Computing and the Arts (CRCA) at UCSD. He serves on the boards of several non-profit and academic organizations in the US and UK which focus on immersive and interactive art and technology. Margolis' current research investigates social and cultural relationships to emerging media. His practice draws on over a decade of experience creating tele-collaborative immersive and interactive artworks and systems. He has published numerous papers on mixed reality artworks and systems and lectured on new media both nationally and internationally. His work has been shown in museums, festivals and galleries around the world. 

Lee Minich

Lee Minich is the President of Lab X Technologies, an engineering design service firm which provides A/V network connectivity for professional audio equipment manufacturers. Additionally since September 2009, Minich has been the Marketing Work Group chairman for AVnu Alliance which is focused on compliance and interoperability of AVB (Audio Video Bridging) standards. He has been in the industry since 1992, and since 2000 has been focused on audio networking solutions. Minich and Lab X Technologies have extensive design experience with leading proprietary protocols (CobraNet, EtherSound, A-Net, Dante) as well as heavily involved with AVB since 2007. Minich also holds BSEE and MSEE degrees.

Steve Morris

Steve Morris is the Director of Engineering at Skywalker Sound. 

Seppo Ilmari Nikkilä

Seppo Ilmari Nikkilä, M.Sc.EE, born 1949 graduated from Helsinki University of Technology mastering in Digital Electronics and Computer Science in 1975. In early 1970's he was pioneering the use of microprocessors in industrial control and in 1980 he lead a group that employed the emerging local area networking technology with microprocessors to design and implement an integrated process and production automation system now being used worldwide.

In 1975 Mr. Nikkilä cofounded Genelec Oy, a Finnish technology company specializing in the active monitor loudspeaker technology. Since 1988 he has worked as the CEO for ANT – Advanced Network Technologies Oy and since 2003 especially with the wireless distribution and collection of streaming multichannel high definition audio. Mr. Nikkilä is an AES member and the author of nearly one hundred scientific or technical papers or reports.

Pauline Oliveros

Pauline Oliveros (1932) is a composer and improviser who performs extensively locally and in many parts of the world in a variety of venues. Her music is performed widely as well by many notable musicians and ensembles. Her works are recorded and available through download sites, cassette, CD, DVD, and Vinyl releases. Tower Ring 2011 is the most recent composition and was commissioned by the Oliver Ranch Foundation for Ann Hamilton’s Tower situated at the Oliver Ranch in Geyserville California. Oliveros plays a Titano acoustic accordion and the Roland V Accordion in her solo and ensemble improvisations. In 2009 Oliveros was honored with the William Schuman lifetime achievement award presented by Columbia University and with a three hour retrospective of her music at the Miller Theater in New York in 2010. Oliveros is the founder of the Deep Listening Institute, Ltd. Based in Kingston NY. For more information see and www.deep

Peter Otto

Peter Otto is an expert in the language and aesthetics of musical and media expression, and also accomplished in advanced hardware/software design and engineering, including instrumentation and facilities design, systems and networking applications, and a wide array of media technology research and development areas. Classically trained in musical performance and composition, he completed his graduate work at California Institute of the Arts in Los Angeles in 1984, and continued there on faculty for several years.  His vitae includes long associations with seminal figures Morton Subotnick and Luciano Berio, as well as studies and collaborations with Pulitzer Prize winners Mel Powell and Roger Reynolds. He currently holds appointments at UCSD as Technology Director on the Faculty of Music and as Director of Research & Development in the Sonic Arts initiative at UCSD's CalIT2, established in 2009. As an educator he is a founding faculty member and advisor to UCSD Music's highly regarded Interdisciplinary Computing and the Arts Major (ICAM), a program which has produced top performers in the nation's most advanced digital media industries and leading universities. As a hardware designer he invented the first digital audio workstation control surface (Waveframe's Contact MIDI Panel), designed the hardware-based spatial audio system TRAILS, and is currently designing audio systems for CalIT2 (StarCave, HiperWall and other systems). Audio and music facility credits include CalIT2's Spatial Audio Lab (Spatlab) and collaborative designs for CalIT2's Black Box and Digital Cinema Theatres, and new systems and studios at UCSD Music's new Prebys Music Center (Experimental Theatre and other systems). Other design work includes advanced research projects in high-definition multi-channel audio streaming and production systems, most notably for CineGrid, a networked ultra-high-definition digital cinema R&D consortium.  Research sponsors include SkySound (LucasArts), Qualcomm, Inc., Cisco, Meyer Sound Labs, National Institutes of Health, HMC Architects, CineGrid, Walt Disney Productions, NTT, and others. In software design, Otto has written software for diverse applications in multi-channel and spatial audio, including binaural and multi-channel sound design environments and utilities, and a variety of spatial audio imaging packages. An entrepreneur, he has founded two software companies and consulted for top tier firms in the private sector. His performance design work has been heard in major American, European and Asian venues such as Carnegie Hall, Juilliard, Los Angeles Philharmonic, SIGGRAPH, Theatre Olympics (Japan), Holland Festival, Foundation Maecht (Fr.), Santa Cecilia (Italy), Barbican and Royal Albert Halls (London), Ars Electronica (Austria), and many others.

Synthia Payne

Synthia Payne is adjunct faculty at the University of Denver, and holds a Master of Fine Arts degree from UC Santa Cruz' Digital Arts and New Media program. Synthia's research addresses the liveness of networked music collaboration and explores interfaces for the use of bodily gestures to improvise, compose, and perform sound art. Her CYBERJAMMER design calls for a massively multiplayer online playground for arts collaboration, as her own work occurs primarily on a global scale with well known as well as anonymous musicians from all over the world playing together at the same time. As a remote controlled voice in the Stanford Laptop Orchestra's 2010 performance of Chris Chafe's "Electrode", she set up a telematic studio and sang with SLOrk from Denver. Synthia was technical director for John Gunther's multi-location telematic concert performance at CU Boulder’s ATLAS theatre between participants from CU Boulder's Jazz Studies onsite, NYU's Steinhardt School, and Korea's KAIST. Currently, Synthia is busy editing recordings for release on her new label "Specular Offerings", and seeking a development deal for CYBERJAMMER MMOArts.

Alain Renaud 

Alain’s research focuses on the development of networked music performance systems with an emphasis on the creation of strategies to interact over a network musically and the notion of shared networked acoustic spaces. He performs regularly over the network with the NetVs.Net collective and the Jackson4s. Alain held a residency at the Banff Centre for the Art, The Center for Computer Research in Music and Acoustics (CCRMA) at Stanford University, where he was a visiting scholar in 2007. He is also involved as an advisor in the EU network performance project, CoMeDia. Alain is a lecturer in Music and Audio Technology at Bournemouth University, England and holds a PhD from the Sonic Arts Research Centre in Belfast, Northern Ireland.

Manfred Rürup

Manfred Ruerup worked as a professional musician for 15 years in Germany. In 1984 he founded the software company Steinberg with his partner Charlie Steinberg. In 2003 Steinberg was sold to Pinnacle US.Inc. Together with Charlie Steinberg he founded in 2005 ­ an online-colaboration-community. Besides that, he is working as a consultant for a number of software companies within the music Industry. 

Christoph Sladeczek 

Christoph Sladeczek was born in Erfurt, Germany in 1981. He studied Media-System Science at the Bauhaus University Weimar where he received a Diplom-Mediensystemwissenschaftler (M.Sc.) degree in 2008. He joined the virtual acoustics group of Fraunhofer IDMT Ilmenau in 2008. His main research interests include spatial audio reproduction techniques for virtual environments, multichannel based auralization and spatial hearing.   

Greg Shay

Greg began experimenting with DSP and digital audio in 1980 by connecting a hand built resistor D to A, to his good old Radio Shack TRS-80. With the first draft of the SCSI bus in hand, Greg designed the first 16 track digital audio workstation for the PC in 1989, as a co-founder of Spectral Synthesis, which became the heart of the Euphonix R-1. In 1992, the demands of collaboration in multi room facilities, stimulated interest and research into audio networks, which came to fruition as an inventor of the Telos Livewire audio network technology. 

Tim Shuttleworth

Tim Shuttleworth is currently Engineering Manager with Renkus Heinz Inc., an early adopter of CobraNet in their integrated loudspeaker systems. He graduated with honours with a degree in Electronics from the University of Sussex, UK. His first foray into professional audio was with Neve, where he led the design of high performance audio electronics for large scale audio mixing consoles for such customers as Abbey Road, The Music Center, George Martin’s A.I.R. Studios, and many more he has long forgotten. He moved on to the role of Engineering Director at CADAC at which time he presented his first paper to the 64th AES Convention on digital control of analog volume. Tim then succumbed to an innate wanderlust, spending time in Australia designing custom electronics to support audio and video installations including ABC Radio Australia’s 11 studio complex, and running his own design-build systems integration venture. After commissioning several Neotek consoles for customers as diverse as the Australian Broadcast Corporation and Tim Finn’s home studio he was invited to become Neotek’s Director of Engineering and moved to Chicago. During a challenging period in his personal life Tim moved to California to join JBL Professional as Director of Electronics development and led the integration of DSP and amplification into studio monitors and live/installed sound loudspeaker products. His patent portfolio of seven granted utility patents with fifteen pending encompasses analog signal processing, power amplification, digital signal processing and audio networking. Three of these granted patents and six pending applications, not including their corresponding EU submissions, stem from his activities as a co-author of the Harman HiQNet® protocol. HiQnet® is the implemented command and control protocol for all networked products across all Harman Professional brands. Prior to joining Renkus-Heinz he was VP Engineering for the Stanton Group where he integrated the engineering groups of the three brands, KRK, Cerwin-Vega and Stanton Magnetics. Tim has been an active participant in the AES TC-NAS and has an abiding interest in all things relating to audio networking.  

Karl Steinberg

Karl (Charlie) Steinberg – born in 1952 – is a MIPA-awarded, grammy-nominated musician and soft/hardware developer from Hamburg/Germany. Besides various activities in the performing and recording music scene he founded Steinberg Research in 1983, which is most famous in context with the Cubase Audio- and MIDI multitrack recording software. After the company was sold to Yamaha in 2004 he founded, which allows to record multitrack sessions with globally distributed persons via the Internet.

Richard Weinberg

Richard Weinberg, Ph.D. is a research associate professor at the USC School of Cinematic Arts, in the John C. Hench Division of Animation and Digital Arts. His digital movies of microscopic marine life ”MicrOrganisms,”  “In the Pond” and “The Anyquarium” have been featured at the CineGrid conferences as examples combining art and science and were shot on a high-resolution digital microscopy system that he developed. He received the 2009 Corporation for Education Network Initiatives in California (CENIC) in Network Innovations for Educational Applications Award for a system to stream interactive high definition movies from USC to distant audiences. Speaking frequently in Japan, he is a Visiting Professor at the Tokyo University of Technology. With a BS in computer science and psychology at Cornell University, he received an MS and PhD in Computer and Information Science from the University of Minnesota, and received their distinguished alumnus award in 2003. His research interests include computer animation, scientific visualization, and high-speed networks systems.

Aidan Williams

Aidan is the founding CTO of Audinate, which he joined from National ICT Australia (NICTA), where he was a principal research engineer and proposed the Digital Audio Networking project that has spun out of NICTA to become Audinate. Prior to joining NICTA, Aidan was at Motorola Labs in Sydney where he worked in the areas of zeroconf IP networking, IPv6, reliable multicast, mobile ad hoc networking and residential gateways. Whilst at Motorola he regularly attended IETF standards meetings and was deeply involved in the development of zero- configuration networking, organising and chairing an IETF BoF on zero-configuration routers. He is a contributing author to a number of IETF documents. He is an inventor on more than twelve patents in the area of IP Networking. Before embarking on an R&D career, he built extensive skills in computer networking and security, operating systems, and software development through several years of hands-on experience managing large networks, critical computer systems, and network security for a large university campus. Aidan has a BSc in Computer Science, and a BEng (Hons I) in Electrical Engineering, both from the University of New South Wales (UNSW), Australia.



AES - Audio Engineering Society