Adaptive Adjustment of Nonlinear Filters Used for Loudspeaker Linearization

Klippel WJ. Adaptive Adjustment of Nonlinear Filters Used for Loudspeaker Linearization. In: AES Convention 104. Audio Engineering Society; 1998. Paper 4646. Available from: https://aes.org/publications/elibrary-page/?id=8534

@inproceedings{Klippel1998_8534,
  author = {Klippel, Wolfgang J.},
  title = {{Adaptive Adjustment of Nonlinear Filters Used for Loudspeaker Linearization}},
  booktitle = {AES Convention 104},
  note = {Paper 4646},
  year = {1998},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=8534}
}

TY  - CPAPER
TI  - Adaptive Adjustment of Nonlinear Filters Used for Loudspeaker Linearization
AU  - Klippel, Wolfgang J.
T2  - AES Convention 104
M1  - Paper 4646
PY  - 1998
DA  - 1998/05/06
UR  - https://aes.org/publications/elibrary-page/?id=8534
PB  - Audio Engineering Society
LA  - en
AB  - Signal distortions caused by loudspeaker nonlinearities can be compensated by inverse nonlinear processing of the electric driving signal. This concept is based on an adequate control architecture having free control parameters adjusted to the particular loudspeaker. Optimal performance requires a self-tuning (adaptive) system to compensate for variations of loudspeaker parameters due to the effect of heating and aging while reproducing the audio signal. Straightforward adaptive controllers use an additional nonlinear filter for modeling the loudspeaker and for transforming the identified parameters into control parameters. This approach is susceptible to systematic errors and cannot be implemented in available DSP-systems at low costs. This paper presents a novel technique for direct updating of the control parameters which makes separate system identification superfluous.
ER  -