A Search for Efficient Dither for DSP Applications

Stuart JR, Wilson RJ. A Search for Efficient Dither for DSP Applications. In: AES Convention 92. Audio Engineering Society; 1992. Paper 3334. Available from: https://aes.org/publications/elibrary-page/?id=6799

@inproceedings{Stuart1992_6799,
  author = {Stuart, J. Robert and Wilson, Rhonda J.},
  title = {{A Search for Efficient Dither for DSP Applications}},
  booktitle = {AES Convention 92},
  note = {Paper 3334},
  year = {1992},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=6799}
}

TY  - CPAPER
TI  - A Search for Efficient Dither for DSP Applications
AU  - Stuart, J. Robert
AU  - Wilson, Rhonda J.
T2  - AES Convention 92
M1  - Paper 3334
PY  - 1992
DA  - 1992/03/06
UR  - https://aes.org/publications/elibrary-page/?id=6799
PB  - Audio Engineering Society
LA  - en
AB  - Dither with a triangular probability distribution function gives theoretically zero noise modulation, but does so at the cost of adding LSB2/6 noise power each time it is applied. Most DSP applications run at the original sampling frequency fS, so the dither noise has to be distributed in the spectrum up to fS/2. In these applications the dither is essentially an audio range signal. This paper examines several proposals for shaping the spectrum of the dither to minimize its audibility. A recently developed loudness model is used to estimate the detectability of shaped noises. The investigation examines the detection criterion appropriate to such shaped noises and gives some listening test results. In searching for an efficient dither the authors are looking for a balance between the audibility of the spectrally shaped dither and the computational cost of achieving it.
ER  -