Parametric stereo coding scheme with a new downmix method and whole band inter channel time/phase differences
2013
This paper presents a novel low bit rate parametric stereo coding scheme which uses whole band inter-channel time difference (WITD) and whole band inter-channel phase difference (WIPD) together with a new effective downmixing method. The inter-channel level differences and inter-channel phase differences are also employed in the proposed stereo coding to further improve the quality in an embedded structure. This scheme is applied to the stereo extension of ITU-T G.722 at 56+8 kbits/s with a frame length of 5 ms. Listening test results are provided to assess the quality of the proposed downmixing method and WITD/WIPD coding scheme separately.
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