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PRESS RELEASE
Studer Introduces BRS Processor
September 03, 2001
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The new Studer BRS Processor allows the reproduction of surround (and stereo) audio signals – including the control rooms acoustics – over a pair of headphones. The introduction of new media and formats for surround sound demands new techniques for headphone reproduction. Mixing surround is a demanding task and becomes a real challenge when the monitoring and acoustics are not at level and not comparable. This is true for headphone as well as for loudspeaker reproduction. The ideal would be a monitoring system with predictable response, a reference monitoring situation an operator can rely on in any studio of the world – known loudspeakers, known loudspeaker position, known acoustics, known sound and for surround and stereo reproduction. Now, these criteria can be met with the Studer BRS Processor. It is a unique monitoring device which allows the reproduction of surround (and stereo) audio signals including the loudspeakers, their position and the room acoustics of a defined room over a standard headphone set. The headphone monitoring system consists of the Studer BRS Processor with the measured data of the preferred room(s) loaded. The first version is used with a standard headphone (not included, has to meet certain specs). The second version includes a headphone set with headtracker. The Studer BRS Processor in conjunction with a standard headphone set reproduces precisely speaker/room acoustics, better than standard surround headphones. In conjunction with the headphones and headtracker the measured room is reproduced in every detail. Working with a BRS system is like working with a clone of the measured room with its specific loudspeakers, their placement and the acoustics. But at any location desired and regardless if surround or stereo is required. Known virtual surround headphone systems use model-based algorithms to create the virtual environment. The Studer BRS processor goes much beyond that and uses measured data from existing rooms with their loudspeaker systems, including the direct and early reflections and reverberation. Room scanning measurements are a service Studer representatives provide. They are made using a dummy-head and a special BRS software and measure at various head rotation angles. The dummy-head is placed at the optimum listening position in the chosen environment (a control room, a living room, a car interior etc.). Each binaural room impulse response is measured from each loudspeaker of the control room to each microphone of the dummy-head. The processed room data is then downloaded into the BRS Processor. Now, the operator can comfortably carry the preferred room(s) to any other location being assured the mix still will sound exactly the same like it would have done in the original room. In use, the listener has to simply plug the headtracking headphones into the processor and to feed the audio signal (e.g. stereo, surround 5.1) into the BRS unit. Then the desired room has to be chosen. The headtracker provides the processor with the information on the rotational head angle of the listener. The BRS Processor uses this data to address the room database and chooses the appropriate set of data to calculate the necessary signals for the ears: the equivalent of up to five loudspeaker signals including the complete room acoustics. The processed signal is fed to the headphones. Numerous applications can benefit by using the BRS processor:
The Studer BRS Processor will become available at the end of year 2001. For more information, visit their web site at http://www.studer.ch/.Recent Studer headlines
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