Last Updated: 20050331, meiSunday, May 29, 11:30 — 13:00
Z4-1 An Object-Based 3-D Audio Broadcasting System for Interactive Broadcasting Services—Taejin Lee, Gi Yoon Park, Inseon Jang, Kyeongok Kang, Electronics and Telecommunications Research Institute (ETRI) - Taejon, Korea
As digital broadcasting technologies have been advanced, user’s expectations for a realistic and interactive broadcasting service also have increased. In this paper we present an object-based 3-D audio broadcasting system. This system consists of an authoring tool, a streaming server, and a client. The authoring tool generates an MPEG-4 file, made of multiple audio objects, after adapting several kinds of acoustical effects to the audio objects. Each audio object is recorded by multiple directional microphones and a multichannel 3-D microphone. To increase the degree of source separation, source separation technology is applied to each object-based audio signal. The streaming server generates transmission packets and sends them to the client through the Internet. The client reconstructs the bitstream, and plays 3-D audio with a user interaction. This paper presents a design and implementation scheme of the object-based 3-D audio system and describes service examples.
Convention Paper 6384 (Purchase now)
Z4-2 Scalable Parametric Audio Coder for Internet Audio Streaming—Juan Carlos Cuevas-Martinez, P. Vera-Candeas, N. Ruiz-Reyes, University of Jaen - Jaen, Spain
For Internet audio streaming purposes, a good trade-off between bit-rate reduction and audio quality is achieved by using parametric audio coding. A scalable parametric coder has been optimized for this requirement, avoiding differential encoding and using a layered scheme for straightforwardly changing the bit rate. The results reveal our coder as a good candidate for massive distributed audio applications, like music on demand, radio broadcasting or real-time streaming audio. Nevertheless, real-time scalable parametric audio streaming requires a complete communication protocol to achieve the goal of network transparency due to best-effort QoS of Internet. In this paper the main features to design this new embedded variable audio control protocol are shown.
Convention Paper 6385 (Purchase now)
Z4-3 An Evaluation Tool for Wireless Digital Audio Applications—Nicolas-Alexander Tatlas, University of Patras - Patras, Greece; Andreas Floros, Atmel Hellas SA - Patras, Greece; John Mourjopoulos, Univeristy of Patras - Patras, Greece
Despite the recent advances in the wireless networking technology, wireless multichannel digital audio delivery is not yet efficiently realized because of the additional implementation issues raised for managing possible distortions introduced. In this paper a novel, open-architecture, software platform for evaluating wireless digital audio distribution is presented. This tool facilitates the assessment of real-time playback distortions induced by variable packet reception delays and packet losses, typically encountered in WLAN transmissions. Moreover, this platform can also be employed for producing audio streams corresponding to the wirelessly delivered digital audio, in order to investigate the audibility of such distortions.
Convention Paper 6386 (Purchase now)
Z4-4 Audio Dementia: A Next Generation Audio Mixing Software Application—Aaron Holladay, Holladay Audio Enterprises - Bloomington, IN, USA
Audio dementia is the next generation software application for mixing audio. The objective of Audio Dementia is to make audio mixing more intuitive, thus making it more user friendly by reducing the learning curve. The provisionally-patented layout of Audio Dementia is straightforward to use and understand. The basic concept is that every track in a song has an icon on a stage area that represents its volume and pan with respect to a central icon on the stage. To change the pan or volume just click and drag the track icon to the point on the stage that the user wishes to place it. This allows the user to tangibly see the music that is being created. This interaction makes music mixing more natural and allows musicians to relax and enjoy the music being created.
Convention Paper 6387 (Purchase now)
Z4-5 Film Music Scoring Using a Digital Audio Workstation—Robert Jay Ellis-Geiger, City University of Hong Kong - Hong Kong
This paper represents a new approach to the process of film scoring, whereby technology is used to dramatically improve communication between all agents of a film production team, most notably between the composer, director, sound designer, orchestrator, music editor, and film editor. It considers the impact of technology on aspects of the film making process and further discusses how selected film music composers currently use technology as part of their production process and the changing role of the orchestrator within the Hollywood context.
Convention Paper 6388 (Purchase now)
Z4-6 NU-Tech: Implementing DSP Algorithms in a Plug-In Based Software Platform for Real Time Audio Applications—Stefano Squartini, Politechnical University of Marche - Anacona, Italy; Emanuele Ciavattini, Ariano Lattanzi, Diego Zallocco, Ferruccio Bettarelli, Leaff Engineering - Macerata, Italy; Francesco Piazza, Politechnical University of Marche - Anacona, Italy
This paper presents a novel software platform called NU-Tech to implement real-time DSP algorithms in multichannel scenarios. Running on a common PC, the overall framework is based on a plug-in architecture, allowing the user to connect specific blocks, operating as DSP algorithms, within the available graphical design environment. These blocks, namely NUTs' (NU-Tech Satellites), have to be previously written in C++. A strict control over latency times is insured by a proper interface to the hardware layer of the PC sound card. It turns out that NU-Tech is well suited for development, real-time debugging, and fine-tuning of DSP algorithms. As a further application, it fulfils the role of DSP operating core of new stand-alone programs preventing the user to develop them from scratch. Some examples are provided to show the effectiveness of the idea.
Convention Paper 6389 (Purchase now)
Z4-7 Audio Processing in a Multimodal Framework—Antonio Camurri, Paolo Coletta, University of Genova - Genova, Italy; Carlo Drioli, Institute of Cognitive Sciences and Technologies - Padova, Italy, and University of Genova, Genova, Italy; Alberto Massari, Gualtiero Volpe, University of Genova - Genova, Italy
The EyesWeb system (www.eyesweb.org) is an open platform for real-time multimodal processing. It has now reached a mature stage and is being used both for research in multimodal interfaces and for applications such as naturally interacting systems for museum exhibits, performing arts, therapy, and rehabilitation. This paper presents the latest development concerning audio processing in EyesWeb with a special focus on multimodal processing. The integrated audio processing support includes modules for the analysis and synthesis of audio streams, for musical processing through the MIDI protocol, and for interoperability with other audio processing platforms, technologies, and standards. Advanced real-time audio support for the mapping of multimodal input into multimedia output is described in the paper.
Convention Paper 6390 (Purchase now)
Z4-8 The Thiele-Krause Archive for Audio-Visual Media Technology: An Online Historical Platform www.thiele-krause-archiv.de—Cornelius Bradter, Technical University of Berlin - Berlin, Germany; Klaus Hobohm, Hochschule für Film und Fernsehen - Potsdam, Germany
Based on the H. K. Thiele A-V technology archive, a multimedia approach for the conversion of the material into electronic documents was developed. This online archive uses the greenstone digital library system (GDL) because it provides a wide variety of input formats and full search functions by extensive use of standard or custom-built metadata. The archive system is complemented by an interactive encyclopedia and specialized relational database functions. The system forms an open platform for the management of information concerning historical A-V media technology.
Convention Paper 6391 (Purchase now)
©2005 Audio Engineering Society, Inc.