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Coding of Spatial Audio Compatible with Different Playback Formats

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Recently, various schemes were proposed for parametric coding of stereo and multi-channel audio signals. Binaural Cue Coding (BCC) is such a technique. It represents multi-channel audio signals as a single downmixed channel plus a small amount of side information. BCC can be applied to mono and stereo backwards compatible coding of multi-channel audio signals. In this paper, we propose a general paradigm for BCC with multiple transmission channels and show how this can be applied not only to bridging between mono/stereo and multi-channel surround but also to bridging between different multi-channel surround formats.

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AES - Audio Engineering Society