Efficient Natural Sample Calculation for Digital Pulse Width Modulation

Wegner C, Schwann R, Ehrhardt D. Efficient Natural Sample Calculation for Digital Pulse Width Modulation. In: AES Convention 142. Audio Engineering Society; 2017.pp. 9783:1-. Available from: https://aes.org/publications/elibrary-page/?id=18659

@inproceedings{Wegner2017_18659,
  author = {Wegner, Carsten and Schwann, Robert and Ehrhardt, Dietmar},
  title = {{Efficient Natural Sample Calculation for Digital Pulse Width Modulation}},
  booktitle = {AES Convention 142},
  pages = {9783:1-},
  year = {2017},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18659}
}

TY  - CPAPER
TI  - Efficient Natural Sample Calculation for Digital Pulse Width Modulation
AU  - Wegner, Carsten
AU  - Schwann, Robert
AU  - Ehrhardt, Dietmar
T2  - AES Convention 142
SP  - 1
M1  - Paper 9783
PY  - 2017
DA  - 2017/05/06
UR  - https://aes.org/publications/elibrary-page/?id=18659
PB  - Audio Engineering Society
LA  - en
AB  - In this paper, an improved algorithm for natural sampling is presented that is suitable for digitally controlled fixed frequency PWM modulators. With only 5 MAC operations, 4 multiplications, and 2 additions, the algorithm calculates both switching times for double-sided 3-level PWM, and offers more than 100 dB between signal and PWM related distortion products for high fidelity audio applications. These features compare well with results published [2-6]. The algorithm can be combined with a noise shaped local feedback for quantized pulse lengths and the digital modulator can be integrated into a global feedback loop.
ER  -