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AES 126Th Convention Program AAEESS112266th CCoonnvveenn ttiioonn PPrroo ggrraamm May 7 – 10, 2009 M,O,C, Center, Munich The AES has launched a new opportunity to recognize Chair: Damian Murphy , University of York, York, UK student members who author technical papers. The Stu - dent Paper Award Competition is based on the preprint 09:00 manuscripts accepted for the AES convention. Forty student-authored papers were nominated. The P1-1 20 Things You Should Know Before excellent quality of the submissions has made the selec - Migrating Your Audio Network to IP— Simon tion process both challenging and exhilarating. Daniels , APT, Belfast, Northern Ireland, UK The award-winning student paper will be honored dur - For many years, synchronous networks have ing the convention, and the student-authored manuscript been considered the industry standard for audio will be published in a timely manner in the Journal of the transport worldwide. Balanced analog copper Audio Engineering Society . circuits, microwave, and synchronous based Nominees for the Student Paper Award were required systems such as V.35/X.21 or T1/E1 have been to meet the following qualifications: the traditional choice for studio transmitter and (a) The paper was accepted for presentation at the inter-studio links in professional audio broadcast AES 126th Convention. networks. Readily available from all major ser - (b) The first author was a student when the work was vice providers, the popularity of synchronous conducted and the manuscript prepared. links has been largely due to the fact that they (c) The student author’s affiliation listed in the manu - offer dedicated, reliable, point-to-point and bi- script is an accredited educational institution. directional communication at guaranteed data and (d) The student will deliver the lecture or poster pre - error rates. However, the reign of synchronous sentation at the Convention. links as the preferred choice for STLs is currently coming under threat from a new challenger, in the * * * * * form of IP-based network technology. The winner of the 126th AES Convention Convention Paper 7651 Student Paper Award is: Modeling of External Ear Acoustics for Insert 09:30 Headphone Usage— Marko Hiipakka (Presenting Author), Miikka Tikander, P1-2 Deploying Large Scale Audio IP Networks— Matti Karjalainen Kevin Campbell , APT, Belfast, Northern Ireland, Convention Paper 7739 UK This paper will examine the key considerations for To be presented on Friday, May 8 in Session P15 those interested in deploying large-scale IP audio —Posters: Hearing networks. It will include an overview of the main * * * * * challenges and draw on the experience of national public broadcasters who have already migrated to Student Event/Career Development IP. We will provide an overview of the key con - STUDENT SCIENCE SPOT cerns such as jitter, delay, and link reliability that Thursday, May 7 through Sunday, May 10 are valid for an IP network of any size. However, Hall 2 Foyer this paper will focus mainly on the issues arising Ongoing presentations of student's non-commercial sci - from the greater complexity and scale of large na - entifically challenging works will be given throughout the tional and country-wide deployments. The paper Convention in an accessible way. They will offer proto - will use illustrations and network applications from types or demonstrations, including a student poster ses - real-world deployments to illustrate the points. sion. Within the scope of their presentation, the students Convention Paper 7652 will have the opportunity to present themselves and their Paper presented by Hartmut Foerster institutes in an appropriate way. The SSS will be hosted by the AES Student Section Graz (AES SSG), supported 10:00 by the SDA and managed in cooperation with the stu - dents who share their projects at the booth. P1-3 A Spatial Filtering Approach for Directional Audio Coding— Markus Kallinger, Henning Ochsenfeld, Giovanni Del Galdo, Fabian Kuech, Session P1 Thursday, May 7 Dirk Mahne, Richard Schultz-Amling, Oliver 09:00 – 11:30 Room K3 Thiergart , Fraunhofer Institute for Integrated AUDIO FOR TELECOMMUNICATIONS Circuits IIS, Erlangen, Germany ¯ Audio Engineering Society 126th Convention Program, 2009 Spring 1 Technical Progra m In hands-free telephony, spatial filtering tech - Session P2 Thursday, May 7 niques are employed to enhance intelligibility of 09:00 – 11:30 Room K4 speech. More precisely, these techniques aim at reducing the reverberation of the desired speech AUDIO FOR GAMES AND INTERACTIVE MEDIA signal and attenuating interferences. Additional - ly, it is well-known that the spatially separate reproduction of desired and interfering sources Chair: Michael Kelly , Sony Computer Entertainment, enhance intelligibility of speech. For the latter UK task, Directional Audio Coding (DirAC) has proven to be an efficient method to capture and 09:00 reproduce spatial sound. In this paper we pro - pose a spatial filtering processing block, which P2-1 Viable Distribution of Multichannel Audio- works in the parameter domain of DirAC. Simu - over-IP for Live and Interactive “Voice lation results show that compared to a standard Talent”-Based Gaming Using High-Quality, beamformer the novel technique offers signifi - Low-Latency Audio Codec Technology— cantly higher interference attenuation, while Gregory Massey , APT, Belfast, Northern Ireland, introducing comparably low distortion of the UK desired signal. Additional subjective tests of The delivery of multichannel audio—from mono speech intelligibility confirm the instrumentally to surround sound—in real-time over public IP obtained results. networks for the purpose of interactive crowd- Convention Paper 7653 participant gaming presents a significant design engineering challenge to games developers, 10:30 console manufacturers, ISPs, and CDNs. Lever - aging expertise gained in professional broad - P1-4 A New Bandwidth Extension for Audio casting and recording studio postproduction, Signals without Using Side-Information— Kha APT has developed a robust and scalable audio Le Dinh, Chon Tam Le Dinh, Roch Lefebvre , codec technology that meshes with popular Université de Sherbrooke, Sherbrooke, Quebec, gaming systems to realize low-latency distribu - Canada tion of high-quality audio for immersive, instanta - The use of narrow bandwidth (300 – 3400 Hz) in neous audio experiences in massively multi- the current telephone network limits the percep - player online games involving interactive tual quality of telephone conversations. Chang - audience responses to vocal/singing talent. ing to wideband network is a solution that can Convention Paper 7656 help to improve quality, but it will need a long Paper presented by David Trainor time to upgrade. Thus, bandwidth extension can be seen as an alternative solution during the 09:30 transition time. A new bandwidth extension P2-2 Elevator: Emotional Tracking Using Audio/Vi - method is presented in this paper. Without using sual Interaction— Basileios Psarras, Andreas any side-information, the proposed method can Floros, Marianna Strapatsakis , Ionian University, be applied as a post-processing step at the ter - Corfu, Greece minal devices, maintaining the compatibility to the current telephone network, and thus, no The research interest on modeling everyday hu - modification is needed in the network nodes. man emotions and controlling them through typi - Experimental results show that the proposed cal multimedia content (i.e., audio and video solution can help to improve significantly the per - data) has recently increased. In this paper an in - ceptual quality of narrowband telephone signal. teractive methodology is introduced for detect - Convention Paper 7654 ing, controlling, and tracking emotions. Based on the above methodology, an interactive audiovi - 11:00 sual installation termed “Elevator” was realized, aiming to analyze and manipulate simple emo - P1-5 Feature Selection vs. Feature Space tions of the participants (such as anger) using Transformation in Music Genre Classification simplified emotion detection audio signal pro - Framework— Hanna Lukashevich , Fraunhofer cessing techniques and specifically selected Institute for Digital Media Technology IDMT, combined audio/visual content. As a result, the Ilmenau, Germany human emotions are “elevated” to pre-defined Automatic classification of music genres is an levels and appropriately mapped to visual con - important task in music information retrieval tent, which corresponds to the emotional research. Nearly all state-of-the-art music genre “thumbnail” of the participants. recognition systems start from the feature ex - Convention Paper 7657 traction block. The extracted acoustical features often could tend to be correlated or/and redun - 10:00 dant, which can cause various difficulties in the P2-3 Applications of Bending Wave Technology classification stage. In this paper we present a in Human Interface Devices— Neil Harris , comparative analysis on applying supervised New Transducers Ltd. (NXT), Cambridge, UK Feature Selection (FS) and Feature Space Transformation (FST) algorithms to reduce the The application of bending-waves to so-called feature dimensionality. We discuss pros and “flat panel loudspeakers” has often been the cons of the methods and weigh the benefits of topic of papers at AES Conventions. This each one against the others. paper looks at other interesting applications of Convention Paper 7655 the technology that have, or are beginning to 2 Audio Engineering Society 126th Convention Program,
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