Audio Subsystem: Digital Audio Near-instantaneous Compression and Expansion
MUSE had a discrete 2- or 4-channel digital audio system called "DANCE", which stood for digital audio near-instantaneous compression and expansion.
It used differential audio transmission (DPCM) that was not psychoacoustics-based like MPEG-1 Layer II. It used a fixed transmission rate of 1350 kbp/s. Like the PAL NICAM stereo system, it used near-instantaneous companding (as opposed to Syllabic-companding like the dbx system uses) and non-linear 13-bit digital encoding at a 32 kHz sample rate.
It could also operate in a 48 kHz 16-bit mode. The DANCE system was well documented in numerous NHK technical papers and in a NHK-published book issued in the USA called Hi-Vision Technology.
The DANCE audio codec was superseded by Dolby AC-3 (a.k.a. Dolby Digital), DTS Coherent Acoustics (a.k.a. DTS Zeta 6x20 or ARTEC), MPEG-1 Layer III and many other audio coders. The methods of this codec are described in the IEEE paper:
Read more about this topic: Multiple Sub-Nyquist Sampling Encoding
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