Against the backdrop of an abandoned mine, the wind drives bales of dry tumbleweed across the seats of the movie theater. A thunderclap makes the audience flinch – the thunderstorm is right over their heads. Then down comes the rain, so close that they can almost feel it. A hissing rattlesnake darts out of an old tipper truck and turns into the ghost of the old mine keeper, who takes the visitors on a helter-skelter journey through the haunted mine.
The illusion is created by state-of-the-art video and audio engineering methods. The IOSONO sound system developed at the Fraunhofer Institute for Digital Media Technology IDMT in Ilmenau ensures perfect acoustic reproduction in all seats – regardless whether a viewer is sitting at the front or the back, at the side or in the middle. Until now, only a few seats offered perfect surround sound. The traditional multi-channel system works by cleverly mixing the sound signals coming from right and left, back and front, but the desired surround-sound effect is only achieved at a central point in the room, the so-called "sweet spot".
IOSONO no longer has such a sweet spot, or rather, the sweet spot is everywhere. A ring of loudspeakers is positioned right round the movie theater. The acoustic signals emitted by the speakers overlap and interact in such a way as to create the perfect surround sound experience in every seat. "The IOSONO technology makes sound waves spread evenly across the room, rather like the ripples you create when you throw a pebble into a pond," explains Dr. Sandra Brix of the IDMT, a member of the IOSONO development team. A "synthetic wave field" is generated by superimposing the sound waves from all 432 loudspeakers.
Although calculated by several computers, this wave field conveys a realistic impression of natural sound. Nothing is left to chance: The sound engineer can place a virtual sound source at any point in the room, and the software ensures that the loudspeakers produce the corresponding acoustic signals – such as the rattlesnake, which appears poised to strike the viewer, regardless of whether he or she is sitting in the front or the back row.
Monika Weiner | alfa
Arguments, Emotions, and News distribution in social media - Leibniz-WissenschaftsCampus Tübingen
04.05.2018 | Leibniz-Institut für Wissensmedien
High Number of Science Enthusiasts in Switzerland
05.02.2018 | Universität Zürich
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.
The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...
Cardiovascular tissue engineering aims to treat heart disease with prostheses that grow and regenerate. Now, researchers from the University of Zurich, the Technical University Eindhoven and the Charité Berlin have successfully implanted regenerative heart valves, designed with the aid of computer simulations, into sheep for the first time.
Producing living tissue or organs based on human cells is one of the main research fields in regenerative medicine. Tissue engineering, which involves growing...
A team of scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg investigated optically-induced superconductivity in the alkali-doped fulleride K3C60under high external pressures. This study allowed, on one hand, to uniquely assess the nature of the transient state as a superconducting phase. In addition, it unveiled the possibility to induce superconductivity in K3C60 at temperatures far above the -170 degrees Celsius hypothesized previously, and rather all the way to room temperature. The paper by Cantaluppi et al has been published in Nature Physics.
Unlike ordinary metals, superconductors have the unique capability of transporting electrical currents without any loss. Nowadays, their technological...
02.05.2018 | Event News
13.04.2018 | Event News
12.04.2018 | Event News
18.05.2018 | Power and Electrical Engineering
18.05.2018 | Information Technology
18.05.2018 | Information Technology