Audio Signal Decorrelation Based on Reciprocal-Maximal Length Sequence Filters and Its Applications to Spatial Sound

Xie BS, Shi B, Xiang N. Audio Signal Decorrelation Based on Reciprocal-Maximal Length Sequence Filters and Its Applications to Spatial Sound. In: AES Convention 133. Audio Engineering Society; 2012. Paper 8805. Available from: https://aes.org/publications/elibrary-page/?id=16547

@inproceedings{Xie2012_16547,
  author = {Xie, Bo-sun and Shi, Bei and Xiang, Ning},
  title = {{Audio Signal Decorrelation Based on Reciprocal-Maximal Length Sequence Filters and Its Applications to Spatial Sound}},
  booktitle = {AES Convention 133},
  note = {Paper 8805},
  year = {2012},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16547}
}

TY  - CPAPER
TI  - Audio Signal Decorrelation Based on Reciprocal-Maximal Length Sequence Filters and Its Applications to Spatial Sound
AU  - Xie, Bo-sun
AU  - Shi, Bei
AU  - Xiang, Ning
T2  - AES Convention 133
M1  - Paper 8805
PY  - 2012
DA  - 2012/10/06
UR  - https://aes.org/publications/elibrary-page/?id=16547
PB  - Audio Engineering Society
LA  - en
AB  - An algorithm of audio signal decorrelation is proposed. The algorithm is based on a pair of all-pass filters whose responses match with a pair of reciprocal maximal length sequences (MLSs). Taking advantage of the characters of uniform power spectrum and low-valued cross-correlation of reciprocal MLSs, the filters create a pair of output signals with low cross-correlation but almost identical magnitude spectra to the input signal. The proposed algorithm is applied to broadening the auditory source-width and enhancing subjective envelopment in multichannel sound reproduction. Preliminary psychoacoustic experiments validate the performance of the proposed algorithm.
ER  -