Nonlinear Control of Loudspeaker Based on Output Flatness and Trajectory Planning

Brunet P, Kubota GS. Nonlinear Control of Loudspeaker Based on Output Flatness and Trajectory Planning. In: AES Convention 147. Audio Engineering Society; 2019. Paper 10241. Available from: https://aes.org/publications/elibrary-page/?id=20614

@inproceedings{Brunet2019_20614,
  author = {Brunet, Pascal and Kubota, Glenn S.},
  title = {{Nonlinear Control of Loudspeaker Based on Output Flatness and Trajectory Planning}},
  booktitle = {AES Convention 147},
  note = {Paper 10241},
  year = {2019},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20614}
}

TY  - CPAPER
TI  - Nonlinear Control of Loudspeaker Based on Output Flatness and Trajectory Planning
AU  - Brunet, Pascal
AU  - Kubota, Glenn S.
T2  - AES Convention 147
M1  - Paper 10241
PY  - 2019
DA  - 2019/10/06
UR  - https://aes.org/publications/elibrary-page/?id=20614
PB  - Audio Engineering Society
LA  - en
AB  - A loudspeaker is inherently nonlinear and produces timbre alterations, roughness, harshness, lack of clarity, and modulation noise. This may impair reproduction quality and speech intelligibility. These issues increase rapidly with high levels and especially high bass levels. Industrial design and marketing constraints demand smaller speaker systems without sacrificing sound output level. This results in higher distortion. To obtain "big bass from little boxes," an anti-distortion system is needed. We present a new approach that is based on the direct control and linearization of the loudspeaker diaphragm displacement that allows the maximization of the bass output and the minimization of the nonlinearities while keeping the diaphragm displacement within the range of safe operation.
ER  -