Mixed-Phase Equalization of Slot-loaded Impulse Responses

Bharitkar S, Decanio W. Mixed-Phase Equalization of Slot-loaded Impulse Responses. In: Convention Paper. Audio Engineering Society; 2025. Paper 10206. Available from: https://aes.org/publications/elibrary-page/?id=22842

@inproceedings{Bharitkar2025_22842,
  author = {Bharitkar, Sunil and Decanio, William},
  title = {{Mixed-Phase Equalization of Slot-loaded Impulse Responses}},
  note = {Paper 10206},
  year = {2025},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=22842}
}

TY  - CPAPER
TI  - Mixed-Phase Equalization of Slot-loaded Impulse Responses
AU  - Bharitkar, Sunil
AU  - Decanio, William
M1  - Paper 10206
PY  - 2025
DA  - 2025/05/12
UR  - https://aes.org/publications/elibrary-page/?id=22842
PB  - Audio Engineering Society
LA  - en
AB  - This paper introduces a new algorithm for multiposition mixed-phase equalization of slot-loaded loudspeaker responses obtained in the horizontal and vertical plane, using finite impulse response (FIR) filters. The algorithm selects a {\em prototype response} that yields a filter that best optimizes a time-domain-based objective metric for equalization for a given direction. The objective metric includes a weighted linear combination of pre-ring energy, early and late reflection energy, and decay rate (characterizing impulse response shortening) during filter synthesis. The results show that the presented mixed-phase multiposition filtering algorithm performs a good equalization along all horizontal directions and for most positions in the vertical direction. Beyond the multiposition filtering capabilities, the algorithm and the metric are suitable for designing mixed-phase filters with low delays, an essential constraint for real-time processing.
ER  -