Experimental Validation of Equalizing Filters for Car Cockpits Designed with Warping Techniques

Bellini A, Farina A, Cibelli G, Ugolotti E, Bruschi F. Experimental Validation of Equalizing Filters for Car Cockpits Designed with Warping Techniques. In: AES Convention 109. Audio Engineering Society; 2000. Paper 5278. Available from: https://aes.org/publications/elibrary-page/?id=9060

@inproceedings{Bellini2000_9060,
  author = {Bellini, Alberto and Farina, Angelo and Cibelli, Gianfranco and Ugolotti, Emanuele and Bruschi, Filippo},
  title = {{Experimental Validation of Equalizing Filters for Car Cockpits Designed with Warping Techniques}},
  booktitle = {AES Convention 109},
  note = {Paper 5278},
  year = {2000},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=9060}
}

TY  - CPAPER
TI  - Experimental Validation of Equalizing Filters for Car Cockpits Designed with Warping Techniques
AU  - Bellini, Alberto
AU  - Farina, Angelo
AU  - Cibelli, Gianfranco
AU  - Ugolotti, Emanuele
AU  - Bruschi, Filippo
T2  - AES Convention 109
M1  - Paper 5278
PY  - 2000
DA  - 2000/09/06
UR  - https://aes.org/publications/elibrary-page/?id=9060
PB  - Audio Engineering Society
LA  - en
AB  - Sound reproduction within a car is a difficult task. Reverberation, reflection, echo, noise, and vibration are some of the issues that account for the difficulty. The first step in the direction of increasing sound comfort is to equalize the acoustic pressure response in the frequency domain. To accomplish this task, the inversion of the measured sound pressure level (SPL) should be performed. The inversion of this system's transfer function is the key point of the equalizing procedure, and many advanced techniques were developed toward this aim. However, they produce a large number of FIR filter taps and thus cannot be implemented in real-time on a low-cost DSP. Frequency warping theory allows one to design a filter especially fitted for low frequencies with a small number of taps. In this paper an automatic tool to develop warped filters for target car cockpits equalization was designed and validated through experiments in commercial cars.:
ER  -