Multiple-Point Equalization in a Room Using Adaptive Digital Filters

Elliott SJ, Nelson PA. Multiple-Point Equalization in a Room Using Adaptive Digital Filters. J Audio Eng Soc. 1989;37(11):899-907. Available from: https://aes.org/publications/elibrary-page/?id=6063

@article{Elliott1989_6063,
  author = {Elliott, Stephen J. and Nelson, Philip A.},
  title = {{Multiple-Point Equalization in a Room Using Adaptive Digital Filters}},
  journal = {Journal of the Audio Engineering Society},
  volume = {37},
  number = {11},
  pages = {899--907},
  year = {1989},
  month = nov,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=6063}
}

TY  - JOUR
TI  - Multiple-Point Equalization in a Room Using Adaptive Digital Filters
AU  - Elliott, Stephen J.
AU  - Nelson, Philip A.
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 37
IS  - 11
SP  - 899
EP  - 907
PY  - 1989
DA  - 1989/11/06
UR  - https://aes.org/publications/elibrary-page/?id=6063
PB  - Audio Engineering Society
LA  - en
AB  - A method is presented for designing an equalization filter for a sound-reproduction system by adjusting the filter coefficients to minimize the sum of the square of the errors between the equalized responses at multiple points in the room and delayed versions of the original electrical signal. Such an equalization filter can give a more uniform frequency response over a greater volume of the enclosure than a filter designed to equalize at one point only. The results of computer simulations are presented for equalization in a "room" with dimensions and acoustic damping typical of a car interior, using various algorithms to adapt automatically the coefficients of a digital equalization filter.
ER  -