A New Metric for Loudspeaker Force Factor Symmetry Analysis

Cinanni D. A New Metric for Loudspeaker Force Factor Symmetry Analysis. In: Express Paper. Audio Engineering Society; 2024. Paper 201. Available from: https://aes.org/publications/elibrary-page/?id=22547

@inproceedings{Cinanni2024_22547,
  author = {Cinanni, Dario},
  title = {{A New Metric for Loudspeaker Force Factor Symmetry Analysis}},
  note = {Paper 201},
  year = {2024},
  month = jun,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=22547}
}

TY  - CPAPER
TI  - A New Metric for Loudspeaker Force Factor Symmetry Analysis
AU  - Cinanni, Dario
M1  - Paper 201
PY  - 2024
DA  - 2024/06/06
UR  - https://aes.org/publications/elibrary-page/?id=22547
PB  - Audio Engineering Society
LA  - en
AB  - Excluding problems linked to geometries and materials, loudspeakers distortion produced at high signal amplitudes is mainly due to motor and suspensions system asymmetries. A novel metric is introduced to examine loudspeaker BL asymmetries that generate 2nd-order Inter Modulation Distortion and Harmonic Distortion. With the new metric is possible to recognize new type of asymmetries and their small differences, offering a measure of them, point-by-point or integrated in a specific region. Moreover, the used scale is an absolute quantity, making it valuable for comparing loudspeakers performances referred to general asymmetries, optimizing or selecting among various designs of the same loudspeaker. The practical application of this method is demonstrated examining a loudspeaker motor force factor BL(x), plotting and discussing asymmetries for different voice coil rest positions and XBL displacement.
ER  -