TY - CHAP A1 - Herder, Jens A1 - Yamazaki, Yasuhiro T1 - A Chatspace Deploying Spatial Audio for Enhanced Conferencing T2 - Third International Conference on Human and Computer KW - VSVR Y1 - 2000 SP - 197 EP - 202 PB - University of Aizu CY - Aizu-Wakamatsu ER - TY - JOUR A1 - Jens Herder, T1 - Optimization of Sound Spatialization Resource Management through Clustering JF - Journal of the 3D-Forum Society N2 - Level-of-detail is a concept well-known in computer graphics to reduce the number of rendered polygons. Depending on the distance to the subject (viewer), the objects’ representation is changed. A similar concept is the clustering of sound sources for sound spatialization. Clusters can be used to hierarchically organize mixelsand to optimize the use of resources, by grouping multiple sources together into a single representative source. Such a clustering process should minimize the error of position allocation of elements, perceived as angle and distance, and also differences between velocity relative to the sink (i.e., Doppler shift). Objects with similar direction of motion and speed (relative to sink) in the same acoustic resolution cone and with similar distance to a sink can be grouped together. KW - audio rendering KW - clustering, and human perception KW - Resource Management KW - Sound Spatialization KW - VSVR Y1 - 1999 VL - 13 IS - 3 SP - 59 EP - 65 ER - TY - GEN A1 - Herder, Jens T1 - Interactive Sound Spatialization - a Primer T2 - MM News, University of Aizu Multimedia Center N2 - Sound spatialization is a technology which puts sound into the three dimensional space, so that it has a perceivable direction and distance. Interactive means mutually or reciprocally active. Interaction is when one action (e.g., user moves mouse) has direct or immediate influence to other actions (e.g., processing by a computer: graphics change in size). Based on this definition an introduction to sound reproduction using DVD and virtual environments is given and illustrated by applications (e.g., virtual converts). KW - DVD KW - Interactivity KW - Resource Management KW - Sound Spatialization KW - Virtual Concerts KW - VSVR Y1 - 2000 UR - http://vsvr.medien.hs-duesseldorf.de/publications/mmnews2000-8.pdf VL - 8 SP - 8 EP - 12 ER - TY - CHAP A1 - Honno, Kuniaki A1 - Suzuki, Kenji A1 - Herder, Jens T1 - Distance and Room Effects Control for the PSFC, an Auditory Display using a Loudspeaker Array T2 - Third International Conference on Human and Computer N2 - The Pioneer Sound Field Controller (PSFC), a loudspeaker array system, features realtime configuration of an entire sound field,including sound source direction, virtual distance, and context of simulated environment (room characteristics: room size and liveness)for each of two sound sources. In the PSFC system, there is no native parameter to specify the distance between the sound source and sound sink (listener) and also no function to control it directrly. This paper suggests the method to control virtual distance using basic parameters: volume, room size and liveness. The implementation of distance cue is an important aspect of 3D sounds. Virtual environments supporting room effects like reverberation not only gain realism but also provide additional information to users about surrounding space. The context switch of different aural attributes is done by using an API of the Sound Spatialization Framework. Therefore, when the sound sink move through two rooms, like a small bathroom and a large living room, the context of the sink switches and different sound is obtained. KW - VSVR Y1 - 2000 SP - 71 EP - 76 PB - University of Aizu CY - Aizu-Wakamatsu ER - TY - CHAP A1 - Yamazaki, Yasuhiro A1 - Herder, Jens T1 - Exploring Spatial Audio Conferencing Functionality in Multiuser Virtual Environments T2 - The Third International Conference on Collaborative Virtual Environments N2 - A chatspace was developed that allows conversation with 3D sound using networked streaming in a shared virtual environment. The system provides an interface to advanced audio features, such as a "whisper function" for conveying a confided audio stream. This study explores the use of spatial audio to enhance a user's experience in multiuser virtual environments. KW - chatspaces KW - groupware KW - narrowcasting functions KW - networked audio KW - spatial audio KW - VSVR Y1 - 2000 SP - 207 EP - 208 PB - ACM CY - San Francisco ER - TY - JOUR A1 - Honno, Kuniaki A1 - Suzuki, Kenji A1 - Herder, Jens T1 - Distance and Room Effects Control for the PSFC, an Auditory Display using a Loudspeaker Array JF - Journal of the 3D-Forum Society N2 - The Pioneer Sound Field Controller (PSFC), a loudspeaker array system, features realtime configuration of an entire sound field, including sound source direction, virtual distance, and context of simulated environment (room characteristics: room size and liveness) for each of two sound sources. In the PSFC system, there is no native parameter to specify the distance between the sound source and sound sink (listener) and also no function to control it directrly. This paper suggests the method to control virtual distance using basic parameters: volume, room size and liveness. The implementation of distance cue is an important aspect of 3D sounds. Virtual environments supporting room effects like reverberation not only gain realism but also provide additional information to users about surrounding space. The context switch of different aural attributes is done by using an API of the Sound Spatialization Framework. Therefore, when the sound sink move through two rooms, like a small bathroom and a large living room, the context of the sink switches and different sound is obtained. KW - VSVR Y1 - 2000 VL - 14 IS - 4 SP - 146 EP - 151 ER - TY - JOUR A1 - Herder, Jens A1 - Yamazaki, Yasuhiro T1 - A Chatspace Deploying Spatial Audio for Enhanced Conferencing JF - Journal of the 3D-Forum Society KW - VSVR Y1 - 2000 VL - 15 IS - 1 ER - TY - CHAP A1 - Cohen, Michael A1 - Herder, Jens A1 - Martens, William T1 - Panel: Eartop computing and cyberspatial audio technology T2 - IEEE-VR2001: IEEE Virtual Reality KW - VSVR Y1 - 2001 SN - 0-7695-0948-7 SP - 322 EP - 323 PB - IEEE CY - Yokohama ER - TY - JOUR A1 - Herder, Jens A1 - Cohen, Michael T1 - The Helical Keyboard: Perspectives for Spatial Auditory Displays and Visual Music JF - Journal of New Music Research N2 - Auditory displays with the ability to dynamically spatialize virtual sound sources under real-time conditions enable advanced applications for art and music. A listener can be deeply immersed while interacting and participating in the experience. We review some of those applications while focusing on the Helical Keyboard project and discussing the required technology. Inspired by the cyclical nature of octaves and helical structure of a scale, a model of a piano-style keyboard was prepared, which was then geometrically warped into a helicoidal configuration, one octave/revolution, pitch mapped to height and chroma. It can be driven by MIDI events, real-time or sequenced, which stream is both synthesized and spatialized by a spatial sound display. The sound of the respective notes is spatialized with respect to sinks, avatars of the human user, by default in the tube of the helix. Alternative coloring schemes can be applied, including a color map compatible with chromastereoptic eyewear. The graphical display animates polygons, interpolating between the notes of a chord across the tube of the helix. Recognition of simple chords allows directionalization of all the notes of a major triad from the position of its musical root. The system is designed to allow, for instance, separate audition of harmony and melody, commonly played by the left and right hands, respectively, on a normal keyboard. Perhaps the most exotic feature of the interface is the ability to fork oneís presence, replicating subject instead of object by installing multiple sinks at arbitrary places around a virtual scene so that, for example, harmony and melody can be separately spatialized, using two heads to normalize the octave; such a technique effectively doubles the helix from the perspective of a single listener. Rather than a symmetric arrangement of the individual helices, they are perceptually superimposed in-phase, co-extensively, so that corresponding notes in different registers are at the same azimuth. KW - 3D audio KW - virtual reality KW - computer music KW - spatialization KW - spatial media KW - visual music KW - VSVR Y1 - 2002 VL - 31 IS - 3 SP - 269 EP - 281 ER - TY - CHAP A1 - Herder, Jens A1 - Novotny, Thomas T1 - Spatial Sound Design and Interaction for Virtual Environments in the Promotion of Architectural Designs T2 - Third International Workshop on Spatial Media N2 - Virtual environment walkthrough applications are generally enhanced by a user’s interactions within a simulated architectural space, but the enhancement that stems from changes in spatial sound that are coupled with a user’s behavior are particularly important, especially within regard to creating a sense of place. When accompanied by stereoscopic image synthesis, spatial sound can immerse the user in a high-realism virtual copy of the real world. An advanced virtual environment that allow users to change realtime rendering features with a few manipulations has been shown to enable switching between different versions of a modeled space while maintaining sensory immersion. This paper reports on an experimental project in which an architectural model is being integrated into such an interactive virtual environment. The focus is on the spatial sound design for supporting interaction, including demonstrations of both the possibilities and limitations of such applications in presenting and promoting architectural designs, as well as in three-dimensional sketching. KW - spatial sound design KW - sketching KW - interaction KW - virtual environments KW - architectural design KW - interactive walkthrough KW - design review KW - VSVR Y1 - 2003 SP - 7 EP - 11 CY - Aizu-Wakamatsu ER -