AES Budapest 2012
Friday, April 27, 16:00 — 17:00 (Room: Brahms)
Future Directions in Multichannel: Recording Techniques for Auro 3D /3D Audio
Gregor Zielinsky, Sennheiser Electronic - Wedemark, Germany
Auro3D is a rather recent additional proposal for reproduction of musical recordings including height information. Its comparatively simple, pragmatic approach makes it all the more interesting for adaption to film and home theater loudspeaker setups. Benefits of Auro3D especially for music recordings will be discussed. For the Tonmeister then, the question arises how to produce 3-D recordings, either founding the mix mostly on spot microphones, or on new main microphone placement techniques, including height microphones. A vast set of different setups were seen at the recent ICSA 2011 Conference on Spatial Audio, in Detmold. Several microphone setups and their sonic differences will be described. The use of microphones, combinations and adjustable polar patterns will be discussed. As in stereo, with main microphones a further question arises on if and how to delay compensate additional spot microphones, relative to the main microphones. Also, how need the main microphones need to be delayed in themselves. Including height loudspeakers produces enormous differences in timbre and spatial perception. How can they be described, and explained? Finally, comments will be presented regarding the differences between single-source and multi-source (phantom source) based localisation in 3-D fields.
There will be demonstrations of both of these systems at the convention.
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