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C. Dunn, and M. Sandler, "Psychoacoustically Optimal Sigma-Delta Modulation," Paper 4134, (1995 October.). doi: C. Dunn, and M. Sandler, "Psychoacoustically Optimal Sigma-Delta Modulation," Paper 4134, (1995 October.). doi:
Abstract: 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.

@article{dunn1995psychoacoustically,
author={dunn, chris and sandler, mark},
journal={journal of the audio engineering society},
title={psychoacoustically optimal sigma-delta modulation},
year={1995},
volume={},
number={},
pages={},
doi={},
month={october},} @article{dunn1995psychoacoustically,
author={dunn, chris and sandler, mark},
journal={journal of the audio engineering society},
title={psychoacoustically optimal sigma-delta modulation},
year={1995},
volume={},
number={},
pages={},
doi={},
month={october},
abstract={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.},}

TY - paper
TI - Psychoacoustically Optimal Sigma-Delta Modulation
SP - EP -
AU - Dunn, Chris
AU - Sandler, Mark
PY - 1995
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 1995 TY - paper
TI - Psychoacoustically Optimal Sigma-Delta Modulation
SP - EP -
AU - Dunn, Chris
AU - Sandler, Mark
PY - 1995
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 1995
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.