Technology

Find out why IOSONO 3D sound is the only "true" 3D sound solution

In sound reproduction, it has always been a goal to create a more plausible and immersive reproduction of sound. In the development from Mono to Stereo to Surround many different speaker layouts for multichannel audio formats have been proposed - 5.1, 7.1, 9.1, 11.1 or 22.2 are just a few examples. The numbers of speakers have continuously increased but the limitations of multichannel formats have remained unchanged. Surround reproduction relies on the listener to be evenly spaced between the speakers for the full effect to be heard. But moving outside this small area, the so called “sweet spot”, causes the illusion to collapse. A problem on the production side is that while content is produced for specific formats, it is adapted to non correct setups during reproduction. Further, venue operators need to install a new system at every new development to play back reasonably.

With IOSONO’s technology the limitations of multi-channel formats belong to the past and listeners will experience soundscapes of incredible vividness, clarity and quality.

IOSONO’s unique approach to sound reproduction effectively removes the speakers from the equation, reproducing individual sounds not just around the listener, but inside the room, outside the room and overhead in any direction, placing acoustic objects accurately in three-dimensional space. IOSONO extends the channel based approach with an object-based view. Information about the intended position and attributes of sound sources is embedded in the audio format, and additional metadata guarantees the support of optimization and adaptation of the content to all reproduction environments. A future proof master is created, enabling IOSONO’s audio processor, the IPC 100, to adapt the audio to fit any speaker configuration regardless of room size or proportions and for every audience member. The technology behind the creation of 3D sound with IOSONO is based on the principles of Wave Field Synthesis and was perceptually optimized with several patented new methods for spatial audio reproduction developed by IOSONO.

For producers IOSONO’s technology opens up new creative possibilities. Audio sources can be panned beyond the actual size of the room or positioned as focused sources inside the listening area. So, for example a nearing thunderstorm can be perceived as approaching from the distance and also the sounds of the raindrops can be placed falling on the heads of listeners.

See a list of publications made by IOSONO

Here you can find a list of publications made by IOSONO. Don't hesitate to contact us in case of interest.

2011

"Investigations on Spatial Sound Design Based on Measured Room Impulses", Frank Melchior, Ph.D. Thesis, Detlft University of Technology, 2011 (TU Delft Library or PDF)
"Design and Realization of a Reference Class Loudspeaker Panel for Wave Field Synthesis", Stephan Mauer, Frank Melchior, presented at the 130th AES Convention, London 2011
"Production for Upcoming Spatial Audio Systems", Workshop at the 130th AES Convention, London 2011, Chair: Frank Melchior, Panelists: Marc Emerit, Kimio Hamasaki, Jeff Levison, Jörn Loviscach, Wieslaw Woszcyk, Gregor Zielinsky
"A Novel Framework for Simulation and Auralization of Massive Multichannel Systems", Frank Melchior, Lutz Altman, Annika Neidhardt, J.R. Menzinger, Stephan Mauer, Paper presented at DAGA, Düsseldorf 2011

2010

"3D Audio – einfach nur ein Kanal dazu? Ein universelles objektbasiertes Audioformat", Frank Melchior, Thomas Sporer, Paper presented at VDT International Convention, Leipzig 2010
"Solutions for Spatial Audio", Frank Melchior, Demo presented at VDT International Convention, Leipzig 2010
"Spatial Audio – From Theory to Production", Frank Melchior, Jens Ahrens and Sascha Spors, Tutorial presented at the 129th AES Convention, San Francisco 2010
"3D Sound" Kazuho Ono, Thomas Sporer, Diemer de Vries, Kimio Hamasaki, Shiro Ise, Toshiyuki Kimura, Frank Melchior, Sascha Spors, Workshop at the 40th AES Conference, Tokyo 2010
"Design and Implementation of an Interactive Room Simulation for Wave Field Synthesis", Frank Melchior, Christoph Sladeczek, Andreas Partzsch, Sandra Brix, Paper presented at the 40th AES Conference, Tokyo 2010
"Spatial Audio – From Theory to Production", Frank Melchior and Sascha Spors, Tutorial presented ath the 128th AES Convention, London 2010
"Wave Field Synthesis and Object-Based Mixing for Motion Picture Sound", Frank Melchior, SMPTE Motion Imaging Journal Vol 119, No. 3, April 2010
"Untersuchungen zur Wahrnehmung früher Deckenreflexionen", Frank Melchior, Fritz Gries, Udo Heusinger, Judith Liebetrau , presented at the DAGA, Berlin 2010

2009

"Spatial Audio Authoring for Ambisonics Reproduction", Frank Melchior, Andreas Gräfe, Andreas Partzsch , presented at the 1st Ambisonics Symposium, Graz 2009
"User Interfaces for Spatial Sound Design", Frank Melchior, Lutz Altmann, presented at the 1st WFS Symposium HFM Detmold, Detmold 2009
"Spherical Array Systems – On the Effect of Measurement Errors in Terms of Perceived Auralization Quality", Frank Melchior, Diemer de Vries, Sandra Brix, Kuang Zheng, presented at the NAG/DAGA, Rotterdam 2009