Near-Instantaneous Companding with Adaptive Quantization

Schroeder EF, Scholz W. Near-Instantaneous Companding with Adaptive Quantization. In: AES Convention 75. Audio Engineering Society; 1984. Paper 2069. Available from: https://aes.org/publications/elibrary-page/?id=11695

@inproceedings{Schroeder1984_11695,
  author = {Schroeder, Ernst F. and Scholz, W.},
  title = {{Near-Instantaneous Companding with Adaptive Quantization}},
  booktitle = {AES Convention 75},
  note = {Paper 2069},
  year = {1984},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=11695}
}

TY  - CPAPER
TI  - Near-Instantaneous Companding with Adaptive Quantization
AU  - Schroeder, Ernst F.
AU  - Scholz, W.
T2  - AES Convention 75
M1  - Paper 2069
PY  - 1984
DA  - 1984/03/06
UR  - https://aes.org/publications/elibrary-page/?id=11695
PB  - Audio Engineering Society
LA  - en
AB  - Near instantaneous or block companding has been readily adopted even for broadcast-quality digital audio transmission. The British NICAM-3, e.g., uses block companding for data reduction from 14 to 10 bits per sample. Further reduction of the data stream down to 8 bits per sample for several applications in consumer electronics can degrade the signal quality. In this paper it will be shown how an additional 6 dB of S/N can be gained by a very simple adaptive quantizing scheme. The background for this procedure is deduced from long-term statistical data of typical program material. These statistical data and the results of computer simulation of the proposed Adaptive-Near-Instantaneous-Companding are shown.
ER  -