Why Binaural Cue Coding is better than Intensity Stereo Coding

摘要

Intensity Stereo Coding (ISC) is a joint-channel audio coding tool that is part of the ISO/MPEG standards . ISC canintroduce severe distortions if applied to the full audio bandwidth or to audio signals with a dynamic or wide spatialimage. In contrast, Binaural Cue Coding (BCC) is a systematic approach for representing auditory spatial cues whichincludes ISC as a subset. BCC is independent of the time/frequency resolution used by the coder, thus it can beoptimized for spatial image reproduction. Subjective listening tests confirm that ISC is significantly compromised byan inappropriate time/frequency resolution and that BCC has superior quality and robustness.