Application of Common-Pole Parallel Filters to Nonlinear Models Based on Orthogonal Functions

Romoli L, Cecchi S, Bank B, Gasparini M, Piazza F. Application of Common-Pole Parallel Filters to Nonlinear Models Based on Orthogonal Functions. In: AES Convention 136. Audio Engineering Society; 2014. Paper 9068. Available from: https://aes.org/publications/elibrary-page/?id=17215

@inproceedings{Romoli2014_17215,
  author = {Romoli, Laura and Cecchi, Stefania and Bank, Balázs and Gasparini, Michele and Piazza, Francesco},
  title = {{Application of Common-Pole Parallel Filters to Nonlinear Models Based on Orthogonal Functions}},
  booktitle = {AES Convention 136},
  note = {Paper 9068},
  year = {2014},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=17215}
}

TY  - CPAPER
TI  - Application of Common-Pole Parallel Filters to Nonlinear Models Based on Orthogonal Functions
AU  - Romoli, Laura
AU  - Cecchi, Stefania
AU  - Bank, Balázs
AU  - Gasparini, Michele
AU  - Piazza, Francesco
T2  - AES Convention 136
M1  - Paper 9068
PY  - 2014
DA  - 2014/04/06
UR  - https://aes.org/publications/elibrary-page/?id=17215
PB  - Audio Engineering Society
LA  - en
AB  - Different nonlinear models are exploited to model real-world devices. Among them, an effective technique is based on the combination of orthogonal nonlinear functions and frequency-domain adaptive filtering algorithms for nonlinear system identification. In this paper first the independence of the model from the orthogonal basis is demonstrated by complementing previously obtained results. Then, a highly efficient model implementation is presented by taking advantage of fixed pole parallel filters for the linear filtering part. The efficiency comes both from using common-pole modeling and from applying a warped filter design that takes into account the frequency resolution of human hearing. Experimental results prove the effectiveness of the proposed approach showing its suitability in real-time digital simulation of nonlinear audio devices.
ER  -