Wave-Digital Polarity and Current Inverters and Their Application to Virtual Analog Audio Processing

Authors: Stefano D'Angelo¹, Vesa Välimäki¹
Status: Published in Proceedings of the 2012 International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2012), pp. 469–472, Kyoto, Japan, March 2012
DOI: 10.1109/ICASSP.2012.6287918

1: Aalto University, Espoo, Finland

BibTeX

@inproceedings{dangelo2012inverters,
  title={Wave-Digital Polarity and Current Inverters and Their Application to Virtual Analog Audio Processing},
  author={D'Angelo, Stefano and V\"alim\"aki, Vesa},
  booktitle={Proc. 2012 Intl. Conf. Acoust., Speech, and Signal Process. (ICASSP 2012)},
  pages={469--472},
  month={March},
  year={2012},
  address={Kyoto, Japan},
  doi={10.1109/ICASSP.2012.6287918}
}

Abstract

Wave digital filters (WDFs) allow for efficient real-time simulation of classic analog circuitry by DSP. This paper introduces two new nonenergic two-port WDF adaptors that allow mixing wave digital subnetworks adopting different polarity and sign conventions and extends the definitions of absorbed instantaneous and steady-state pseudopower to the case in which the active sign convention is used. This new knowledge is applied to a WDF triode tube amplifier model and it is shown to result in a more faithful reproduction of the simulated system than the previous model.