Mixed Time-Frequency Approach for Multipoint Room Response Equalization

Primavera A, Cecchi S, Piazza F, Carini A. Mixed Time-Frequency Approach for Multipoint Room Response Equalization. In: AES Conference: 45th International Conference: Applications of Time-Frequency Processing in Audio. Audio Engineering Society; 2012. Paper 3-6. Available from: https://aes.org/publications/elibrary-page/?id=16187

@inproceedings{Primavera2012_16187,
  author = {Primavera, Andrea and Cecchi, Stefania and Piazza, Francesco and Carini, Alberto},
  title = {{Mixed Time-Frequency Approach for Multipoint Room Response Equalization}},
  booktitle = {AES Conference: 45th International Conference: Applications of Time-Frequency Processing in Audio},
  note = {Paper 3-6},
  year = {2012},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16187}
}

TY  - CPAPER
TI  - Mixed Time-Frequency Approach for Multipoint Room Response Equalization
AU  - Primavera, Andrea
AU  - Cecchi, Stefania
AU  - Piazza, Francesco
AU  - Carini, Alberto
T2  - AES Conference: 45th International Conference: Applications of Time-Frequency Processing in Audio
M1  - Paper 3-6
PY  - 2012
DA  - 2012/03/06
UR  - https://aes.org/publications/elibrary-page/?id=16187
PB  - Audio Engineering Society
LA  - en
AB  - A still open problem in the field of room response equalization is the development of perceptually useful mixed-phase equalizers. In a recent paper, a multipoint mixed-phase room response equalization system, integrating a minimum-phase multiple position room magnitude equalizer and a FIR group delay equalizer, was developed in the frequency domain. Starting from this approach, a mixed time-frequency algorithm is here proposed. The minimum-phase multiple position equalizer developed in the frequency domain, is combined with an all-pass FIR phase equalizer, designed in the time domain considering a suitable time-reversed version of a prototype function and taking advantage of the mixing time evaluation. Several tests have been performed considering real environments and comparing the proposed approach with the previous one, based on a group delay compensation. Subjective listening tests have also been done in a real environment, confirming the improvement in the perceived audio quality.
ER  -