Bit-Rate Saving in Multichannel Sound: Using a Band-Limited Channel to Transmit the Center Signal

van de Par SL, ten Kate WR, Kohlrausch A, Houtsma AJ. Bit-Rate Saving in Multichannel Sound: Using a Band-Limited Channel to Transmit the Center Signal. J Audio Eng Soc. 1994;42(7/8):555-564. Available from: https://aes.org/publications/elibrary-page/?id=6934

@article{vandePar1994_6934,
  author = {van de Par, Steven L. and ten Kate, Warner R. and Kohlrausch, Armin and Houtsma, Adrianus J.},
  title = {{Bit-Rate Saving in Multichannel Sound: Using a Band-Limited Channel to Transmit the Center Signal}},
  journal = {Journal of the Audio Engineering Society},
  volume = {42},
  number = {7/8},
  pages = {555--564},
  year = {1994},
  month = jul,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=6934}
}

TY  - JOUR
TI  - Bit-Rate Saving in Multichannel Sound: Using a Band-Limited Channel to Transmit the Center Signal
AU  - van de Par, Steven L.
AU  - ten Kate, Warner R.
AU  - Kohlrausch, Armin
AU  - Houtsma, Adrianus J.
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 42
IS  - 7/8
SP  - 555
EP  - 564
PY  - 1994
DA  - 1994/07/06
UR  - https://aes.org/publications/elibrary-page/?id=6934
PB  - Audio Engineering Society
LA  - en
AB  - A method is proposed to achieve full-frequency-range three-channel (left, right, and center) sound reproduction in systems that have only two full-range sound channels and some band-limited commentary channels. The low-frequency part of the center signal, which matches the bandwidth of the commentary channels, is added to the (multilingual) speech signals in each of the commentary channels. The remaining high-frequency part is added in the left and right channels as in conventional mixdowns. Sound reproduction of this signal by a conventional two-channel receiver remains unaltered. The low-frequency part of the center signal is mixed to the left and right signals together with the speech once the user has selected a commentary channel. Three-channel reproduction is obtained by routing the selected commentary channel to a central loudspeaker. Listening tests revealed that sound reproduction according to the proposed scheme could not be distinguished from original three-channel reproduction. This scheme can be applied to proposed standards such as D2MAC and MPEG2.
ER  -