Modeling the Large Signal Behavior of Micro-Speakers

Klippel W. Modeling the Large Signal Behavior of Micro-Speakers. In: AES Convention 133. Audio Engineering Society; 2012. Paper 8749. Available from: https://aes.org/publications/elibrary-page/?id=16491

@inproceedings{Klippel2012_16491,
  author = {Klippel, Wolfgang},
  title = {{Modeling the Large Signal Behavior of Micro-Speakers}},
  booktitle = {AES Convention 133},
  note = {Paper 8749},
  year = {2012},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16491}
}

TY  - CPAPER
TI  - Modeling the Large Signal Behavior of Micro-Speakers
AU  - Klippel, Wolfgang
T2  - AES Convention 133
M1  - Paper 8749
PY  - 2012
DA  - 2012/10/06
UR  - https://aes.org/publications/elibrary-page/?id=16491
PB  - Audio Engineering Society
LA  - en
AB  - The mechanical and acoustical losses considered in the lumped parameter modeling of electro-dynamical transducers may become a dominant source of nonlinear distortion in micro-speakers, tweeters, headphones, and some horn compression drivers where the total quality factor Qts is not dominated by the electrical damping realized by a high force factor Bl and a low voice resistance Re. This paper presents a nonlinear model describing the generation of the distortion and a new dynamic measurement technique for identifying the nonlinear resistance Rms(v) as a function of voice coil velocity v. The theory and the identification technique are verified by comparing distortion and other nonlinear symptoms measured on micro-speakers as used in cellular phones with the corresponding behavior predicted by the nonlinear model.
ER  -