Psychoacoustically Optimal Sigma-Delta Modulation

Dunn C, Sandler M. Psychoacoustically Optimal Sigma-Delta Modulation. In: AES Convention 99. Audio Engineering Society; 1995. Paper 4134. Available from: https://aes.org/publications/elibrary-page/?id=7632

@inproceedings{Dunn1995_7632,
  author = {Dunn, Chris and Sandler, Mark},
  title = {{Psychoacoustically Optimal Sigma-Delta Modulation}},
  booktitle = {AES Convention 99},
  note = {Paper 4134},
  year = {1995},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=7632}
}

TY  - CPAPER
TI  - Psychoacoustically Optimal Sigma-Delta Modulation
AU  - Dunn, Chris
AU  - Sandler, Mark
T2  - AES Convention 99
M1  - Paper 4134
PY  - 1995
DA  - 1995/10/06
UR  - https://aes.org/publications/elibrary-page/?id=7632
PB  - Audio Engineering Society
LA  - en
AB  - A psychoacoustically optimal sigma-delta modulator (SDM) possesses a noise floor with a power spectral density that is invariant with input signal characteristics, and is also minimally audible. While idle tones and noise modulation in sigma-delta modulators can be eliminated by using dither or by making the modulator chaotic, the noise floor attributable to an SDM can be made minimally audible by forcing the noise-shaping characteristic to follow the threshold of hearing. Such an action is possible in higher-order SDMs by appropriate control of noise shaping zero locations, and for a given perceived resolution, has the potential benefit of reduced oversampling factor and/or modulator order. In this paper, optimal zero locations and associated reductions in oversampling factor/modulator order are determined for SDM orders ranging from 2 and 5.
ER  -