An Improved and Generalized Diode Clipper Model for Wave Digital Filters

Werner KJ, Nangia V, Bernardini A, Smith IJO, Sarti A. An Improved and Generalized Diode Clipper Model for Wave Digital Filters. In: AES Convention 139. Audio Engineering Society; 2015. Paper 9360. Available from: https://aes.org/publications/elibrary-page/?id=17918

@inproceedings{Werner2015_17918,
  author = {Werner, Kurt James and Nangia, Vaibhav and Bernardini, Alberto and Smith, III, Julius O. and Sarti, Augusto},
  title = {{An Improved and Generalized Diode Clipper Model for Wave Digital Filters}},
  booktitle = {AES Convention 139},
  note = {Paper 9360},
  year = {2015},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=17918}
}

TY  - CPAPER
TI  - An Improved and Generalized Diode Clipper Model for Wave Digital Filters
AU  - Werner, Kurt James
AU  - Nangia, Vaibhav
AU  - Bernardini, Alberto
AU  - Smith, III, Julius O.
AU  - Sarti, Augusto
T2  - AES Convention 139
M1  - Paper 9360
PY  - 2015
DA  - 2015/10/06
UR  - https://aes.org/publications/elibrary-page/?id=17918
PB  - Audio Engineering Society
LA  - en
AB  - We derive a novel explicit wave-domain model for “diode clipper" circuits with an arbitrary number of diodes in each orientation, applicable, e.g., to wave digital filter emulation of guitar distortion pedals. Improving upon and generalizing the model of Paiva et al. (2012), which approximates reverse-biased diodes as open circuits, we derive a model with an approximated correction term using two Lambert W functions. We study the energetic properties of each model and clarify aspects of the original derivation. We demonstrate the model's validity by comparing a modded Tube Screamer clipping stage emulation to SPICE simulation.
ER  -