Broadband Analysis and Synthesis for Directional Audio Coding Using A-Format Input Signals

Politis A, Pulkki V. Broadband Analysis and Synthesis for Directional Audio Coding Using A-Format Input Signals. In: AES Convention 131. Audio Engineering Society; 2011. Paper 8525. Available from: https://aes.org/publications/elibrary-page/?id=16051

@inproceedings{Politis2011_16051,
  author = {Politis, Archontis and Pulkki, Ville},
  title = {{Broadband Analysis and Synthesis for Directional Audio Coding Using A-Format Input Signals}},
  booktitle = {AES Convention 131},
  note = {Paper 8525},
  year = {2011},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16051}
}

TY  - CPAPER
TI  - Broadband Analysis and Synthesis for Directional Audio Coding Using A-Format Input Signals
AU  - Politis, Archontis
AU  - Pulkki, Ville
T2  - AES Convention 131
M1  - Paper 8525
PY  - 2011
DA  - 2011/10/06
UR  - https://aes.org/publications/elibrary-page/?id=16051
PB  - Audio Engineering Society
LA  - en
AB  - Directional Audio Coding (DirAC) is a parametric non-linear technique for spatial sound recording and reproduction, with flexibility in terms of loudspeaker reproduction setups. In the general 3-dimensional case, DirAC utilizes as input B-format signals, traditionally derived from the signals of a regular tetrahedral first-order microphone array, termed A-format. For high-quality rendering, the B-format signals are also exploited in the synthesis stage. In this paper we propose an alternative formulation of the analysis and synthesis, which avoids the effect of non-ideal B-format signals on both stages, and achieves improved broadband estimation of the DirAC parameters. Furthermore, a scheme for the synthesis stage is presented that utilizes directly the A-format signals without conversion to B-format.
ER  -