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IOSONO: Total Sonic Immersion through Wavefield Synthesis

Discover the innovative technology of IOSONO, a surround sound system based on Wavefield Synthesis. This system provides total sonic immersion without the need for a sweet spot. Learn about its history, basics, installations, mixing capabilities, and future applications.

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IOSONO: Total Sonic Immersion through Wavefield Synthesis

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  1. IOSONO Total Sonic Immersion through Wavefield Synthesis

  2. IOSONO - WHAT IS IT? • A relatively new innovation in surround sound from our friends at the Fraunhofer Institut. • Based on The Principle of Wavefield Synthesis • Capable of providing total sonic immersion to audiences within an Iosono - equipped space • Superior to conventional (Dolby, DTS) surround systems - NO SWEET SPOT

  3. Wavefield Synthesis History • First suggested by A.J. Berkhout in 1988, and developed in the 1990’s at the Technical University of Delft, Netherlands in the 1990’s • Grew from experiments in sonicexploration for petroleum reserves

  4. Wavefield Synthesis Basics • Generation or reproduction of sound fields with natural temporal and spatial characteristics within a volume or area bounded by arrays of loudspeakers Directivity (spatial) interference pattern generated by two loudspeakers Pattern generated by an array of loudspeakers

  5. Wavefield Synthesis Basics (continued) • Based upon the Huygens principle The propagation of waves through a medium can be qualitatively described by adding the contributions of all secondary sources positioned along a wave front • Therefore If it is possible to determine the pressure and particle velocity of a wave field on a secondary surface of a closed volume, then it would be possible to determine the sound pressure at any point within that volume.

  6. Wavefield Synthesis Basics (continued)

  7. WFS and IOSONO • By employing sophisticated signal processing and a ring of speaker arrays, it is possible to recreate correct localization and spatial impression within the area bounded by the arrays.

  8. WFS and IOSONO (continued) • In playback, Rendering Unit controls individual speakers in the arrays Speaker arrays, spaced at 15 cm intervals, operate in a coordinated fashion to re-create each individual sound. Rendering Unit

  9. WFS and IOSONO (continued) • Speaker panels are configured in a ring • Each panel contains 8 2-way speakers

  10. IOSONO - Installations • Currently installed in a cinema in Ilmenau, Germany Currently no movies have been mixed for Iosono, butit can playback Dolby surround Trailer to demonstrate the capability of the system • Bregenz Festival Summer 2005 - Lake Constance Verdi’s Il Trovatore Spatially Mixed for 820 speakers Rendering Unit supports 8192 Channels

  11. Now Installed in Hollywood! • Mann's Chinese 6 Theater in Hollywood unveiled the first installation of the system in a 3-D-ready commercial theater (it also houses a digital cinema projector and RealD 3-D system). The 3-D sound system at the Mann is a ring of 380 speakers, set six inches apart, around the wall of the auditorium. • Anime clip “Freedom” mixed specifically for IOSONO • First Feature Length Film Expected in 2009

  12. IOSONO @ Tresor - Berlin • More than 200 independent audio channels for Wave Field Synthesis rendering, combined with touch screen controlled real-time interface for live-Djing • Workshops for DJs, live acts, electronic artists and producers • Individual appointments available

  13. IOSONO - MIXING • IOSONO Spatial Audio Workstation Allows the audio engineer to mix sound by mapping the sources to the desired location in the room Uses standard audio files, from Pro-Tools or other programs Sounds are mixed into sound scenes - up to 64 simultaneous scenes Based on the LAWO mc²66 mixing desk

  14. IOSONO - MIXING(continued)

  15. IOSONO - Future Applications • Cinema • Themed Environments • Live Events • Nightclubs • Home Theatre (BUT, installation is expensive and can be impractical, especially in the home)

  16. WFS and IOSONO - References • IOSONO Home Page http://www.iosono-sound.com/ • Wavefield Synthesis - White Papers www.soundcontrol.tudelft.nl/ Research_projects/WFS_IEEE_99.pdf www.irt.de/wittek/hauptmikrofon/theile/Theile_DAFX.PDF • LAWO AG - Makers of LAWO HD Core DSP and the mc²66 mixing desk http://www.lawo.de

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