Improvements on Automatic Parametric Equalization and Cross-Over Alignment of Audio Systems

Ramos G, Tomas P. Improvements on Automatic Parametric Equalization and Cross-Over Alignment of Audio Systems. In: AES Convention 126. Audio Engineering Society; 2009. Paper 7759. Available from: https://aes.org/publications/elibrary-page/?id=14955

@inproceedings{Ramos2009_14955,
  author = {Ramos, German and Tomas, Pedro},
  title = {{Improvements on Automatic Parametric Equalization and Cross-Over Alignment of Audio Systems}},
  booktitle = {AES Convention 126},
  note = {Paper 7759},
  year = {2009},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14955}
}

TY  - CPAPER
TI  - Improvements on Automatic Parametric Equalization and Cross-Over Alignment of Audio Systems
AU  - Ramos, German
AU  - Tomas, Pedro
T2  - AES Convention 126
M1  - Paper 7759
PY  - 2009
DA  - 2009/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14955
PB  - Audio Engineering Society
LA  - en
AB  - The idea and algorithm implementation of an automatic parametric equalizer and cross-over alignment of audio systems was proposed previously by one of the authors with proven success. This method designed Infinite Impulse Response (IIR) equalization and cross-over filters directly in a series of second-order-sections (SOS) employing peak filters, and pre-initialized high-pass and low-pass filters, defined by its parameters (frequency, gains, and Q). The method supported the inclusion of constraints (maximum and minimum parameter values) and designed the SOS in order of importance in the equalization, providing thus a scalable filter implementation. In order to lower the order of the needed filter, and looking also for an automatic decision on the selection of filter types and initialization, several improvements are presented. It is now possible for the algorithm to select, configure and use Shelving filters in the SOS chain for equalization. Also, the decision and initialization of the needed high-pass and low-pass SOS filters could be automatic, helping in the cross-over design stage for active audio systems.
ER  -