A Note on Mathematical Modeling of Power Amplifier/Loudspeaker Nonlinearity in Acoustic Echo Cancelers

Abuelma’atti MT. A Note on Mathematical Modeling of Power Amplifier/Loudspeaker Nonlinearity in Acoustic Echo Cancelers. J Audio Eng Soc. 2011;59(10):745-748. Available from: https://aes.org/publications/elibrary-page/?id=16112

@article{Abuelmaatti2011_16112,
  author = {Abuelma’atti, Muhammad Taher},
  title = {{A Note on Mathematical Modeling of Power Amplifier/Loudspeaker Nonlinearity in Acoustic Echo Cancelers}},
  journal = {Journal of the Audio Engineering Society},
  volume = {59},
  number = {10},
  pages = {745--748},
  year = {2011},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16112}
}

TY  - JOUR
TI  - A Note on Mathematical Modeling of Power Amplifier/Loudspeaker Nonlinearity in Acoustic Echo Cancelers
AU  - Abuelma’atti, Muhammad Taher
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 59
IS  - 10
SP  - 745
EP  - 748
PY  - 2011
DA  - 2011/10/06
UR  - https://aes.org/publications/elibrary-page/?id=16112
PB  - Audio Engineering Society
LA  - en
AB  - A simple mathematical model is proposed to represent the nonlinear characteristics of the combined power amplifier and loudspeaker in acoustic echo cancellers. Three adjustable parameters of the model relate to the distinct parts of the nonlinearity: the linear region for small amplitude, the onset elbow where the nonlinearity begins, and the saturation region for large amplitudes. Compared to a piece-wise linear model, this approach has continuous first derivatives. In combination with linear adaptive filters, this model allows for the efficient design of echo cancellers.
ER  -