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Last Updated: 20060403, meiP10 - Posters: Audio in Computers and Audio Networking
Sunday, May 21, 11:00 — 12:30
P10-1 Scene Description Model and Rendering Engine for Interactive Virtual Acoustics—Jean-Marc Jot, Jean-Michel Trivi, Creative Advanced Technology Center - Scotts Valley, CA, USA
Interactive environmental audio spatialization technology has become commonplace in personal computers, where its primary current application is video game soundtrack rendering. The most advanced PC audio platforms available can spatialize 100 or more sound sources simultaneously over headphones or multichannel home theater systems, and employ multiple reverberation engines to simulate complex acoustical environments. This paper reviews the main features of the EAX environmental audio programming interface and its relation to the I3DL2 and MPEG-4 standards. A statistical reverberation model is introduced for simulating per-source distance and directivity effects. An efficient spatial reverberation and mixing architecture is described for the spatialization of multiple sound sources around a virtual listener navigating across multiple connected virtual rooms including acoustic obstacles.
[Poster Presentation Associated with Paper Presentation 4-2]
Convention Paper 6660 (Purchase now)
P10-2 Intelligent Audio for Games—Col Walder, Revolution Recording - Sheffield, UK
Providing interactive audio for computer games has traditionally been seen as a challenge, particularly given the technological limitations of games consoles. With current advances in technology, however, there is the potential to take advantage of the benefits of interactivity. This paper proposes the use of Artificial Intelligence (AI) routines to control in-game audio with a focus on implementing techniques used in film sound for drama-based games. Soar architecture is presented as a good candidate for developing audio AI for games.
[Poster Presentation Associated with Paper Presentation 4-3]
Convention Paper 6661 (Purchase now)
P10-3 Single Frequency Networks for FM Radio—Pierre Soelberg, Selberg Broadcast & IT Consult - Købehavn S, Denmark
Single Frequency Networks (SFN) and Near Single Frequency Networks (NSFN) are usually not considered suitable for FM radio. Some countries are now replanning their FM bands for the use of (N)SFN, in order to make space for more stations. Even though some stations use it, like a station covering a highway, replanning the FM-band with the use of SFN for a whole country, is a different thing. The first country to do this was the Netherlands, and the first experiences with it are not as good as expected. The requirements for synchronization of FM transmitters used for (N)SFN are explained, and SFN networks are tested from real transmitter sites. The result is a proposed correction for the Dutch norm.
[Poster Presentation Associated with Paper Presentation P4-6]
Convention Paper 6664 (Purchase now)
P10-4 A Paradigm for Wireless Digital Audio Home Entertainment—Nikos Kokkos, University of Patras - Patras, Greece; Andreas Floros, Ionian University - Corfu, Greece; Nicolas-Alexander Tatlas, John Mourjopoulos, University of Patras - Patras, Greece
Despite recent advances in wireless networking technology, real-time streaming of CD-quality digital audio remains a challenging topic. In this paper a set of applications following the server-client model was developed, facilitating the transmission and playback of PCM-coded audio over wireless links. The implementation is based on typical personal computer (PC) platforms interconnected with off-the-shelf wireless networking hardware. Performance evaluation tests are presented under different networking parameters and link conditions, leading to an optimal set of parameters for high-quality wireless digital audio delivery.
[Poster Presentation Associated with Paper Presentation P4-7]
Convention Paper 6665 (Purchase now)
P10-5 Design and Installation of Recording Studios for Vocational Training—Chris Bradley, James Watt College of Further & Higher Education - Greenock, Inverclyde, Scotland, UK; Billy Law, Mediaspec - Glasgow, Scotland, UK
This paper describes the design and installation of new recording studios for training of music and sound production allowing unparalleled direct student hands-on tuition. The design allows simultaneous recording from the live rooms to all twelve control rooms via digital distribution, enabling individual set up for a recording session, multitrack recording and subsequent mixdown. All recording sessions are saved to a centralized server that allows back-up and uploading to and from any other control room. Students can therefore import their work into any of the other control rooms at any time. Networking is through Gigabit Ethernet so transfer of work is fast, and students have their own password protected space, learning the importance of file management.
[Poster Presentation Associated with Paper Presentation P4-6]
Convention Paper 6667 (Purchase now)
P10-6 Flexible, High Speed Audio Networking for Hotels and Convention Centers—Richard Foss, Rhodes University - Grahamstown, South Africa; Jun-ichi Fujimori, Yamaha Corporation - Hamamatsu, Japan; Nyasha Chigwamba, Rhodes University - Grahamstown, South Africa; Brad Klinkradt, Harold Okai-Tettey, Networked Audio Solutions - Grahamstown, South Africa
This paper describes the use of mLAN (music Local Area Network) to solve the problem of audio routing within hotels and convention centers. mLAN is a FireWire-based digital network interface technology that allows professional audio equipment, PCs, and electronic instruments to be easily and efficiently interconnected using a single cable. In order to solve this problem, an existing mLAN Connection Management Server, augmented with additional functionality, has been utilized. A graphical client application has been created that displays the various locations within a hotel/convention center and sends out appropriate routing messages in Extensible Mark-up Language (XML) to an mLAN connection management server. The connection management server, in turn, controls a number of mLAN audio distribution boxes on the FireWire network.
[Poster Presentation Associated with Paper Presentation P4-10]
Convention Paper 6668 (Purchase now)
P10-7 JavaOL – A Structured Audio Orchestra Language: Tools, Player, and Streaming Engine—Tien-Ming Wang, Yi-Song Siao, Alvin Su, National Cheng-Kung University - Tainan, Taiwan
MPEG4 Structure Audio (SA) defined a set of tools to provide high quality low bit-rate audio. In MPEG-4 SA, SAOL (Orchestra Language) is the most important part because it is used to implement algorithms to generate sounds. However, SAOL must be translated into other programming languages such that it can be executed currently. This requires more computing power to achieve real-time decoding. Based on MPEG-4 SAOL, we propose JavaOL because it eliminates the translation process and is more efficient. In fact, it is Java equipped with the SAOL opcode library. Therefore, one can achieve the same functions provided by SAOL. We also provide an RTP streaming engine and the associate player. Software tools are provided to combine other audio sources.
Convention Paper 6706 (Purchase now)
P10-8 Using Remote Recording Over the Internet in Education—Patrick Quinn, Don Knox, Lynne Baillie, David Harrison, Glasgow Caledonian University - Glasgow, UK; Martin Dewar, Coatbridge College - Coatbridge, UK
Remote recording across the Internet now appears to have come of age with the recent development of appropriate software and infrastructure. Within the educational sector the Internet has taken a central role as a means to deliver educational materials. In this innovative pilot project involving Glasgow Caledonian University and its partner Coatbridge College, the use of the Internet to teach audio technology and production techniques will be explored and evaluated. It is anticipated that the knowledge and experience gained will better prepare the audio professionals of the future.
Convention Paper 6707 (Purchase now)
P10-9 A Community Hierarchic-Based Approach for Scalable Parametric Audio Multicasting Over the Internet—Juan Carlos Cuevas-Martinez, P. Vera-Candeas, N. Ruiz-Reyes, P. J. Garrido-Rivera, J. Ruiz-Pérez, University of Jaén - Jaen, Spain
One of the main features of a low bit-rate audio coder is its availability for broadcast over media, mainly over the Internet and mobile networks. It is well known that it is not a trivial problem; there are many troubles that could appear in a multicasting system, mainly due to Internet lack of QoS. This kind of audio traffic has to exist with TCP connections, has to avoid congestion, and should require fewer changes in network equipment as possible. In this paper we propose some features to be taken into consideration in the development of an end system multicast and peer-to-peer communication protocol for scalable parametric audio broadcasting over the Internet with low bit rate and good quality.
Convention Paper 6708 (Purchase now)
P10-10 Distant Teaching of Chamber Music via Local Area Networks—Joerg Bitzer, Tobias May, University of Applied Science Oldenburg - Oldenburg, Germany; Zefir Kurtisi, University of Braunschweig - Braunschweig, Germany; Thomas Loesch, L3S Research Center - Hannover, Germany
In this paper we present a study on teaching chamber music via Internet. The application for this setup is for a highly reputed teacher to teach professional musicians at a very high level. Usually, all participants would have to fly from all over the world in order to work together. Therefore, it would be of great value, if these teaching lessons could be done via Internet. Several audio and video devices and different audio setups have been tested. The results indicate that MPEG 2 broadcast devices with two microphones are suitable for this task.
Convention Paper 6709 (Purchase now)
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