23rd International AES Conference
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SESSION 4: CREATING SPACE WITH DSP


Spatial Post-Processing of Audio Recordings
Jean-Marc Jot
Creative Advanced Technology Center, Scotts Valley, CA, USA


This paper reviews signal processing methods for improving the presentation of two-channel and multichannel recordings by spatial processing in consideration of the playback system. The goal is to enhance the listenerís experience by attempting to address limitations of the playback system or recording format, while preserving the original audio content as faithfully as possible. The approaches reviewed here include: (1) artificial reverberation, (2) virtualization of recordings for playback over headphones or two loudspeakers, and (3) up-mix or stereo widening of two-channel recordings for playback over two-channel or multichannel loudspeaker systems.