Comparison of Modal Versus Delay-and-Sum Beamforming in the Context of Data-Based Binaural Synthesis

Spors S, Wierstorf H, Geier M. Comparison of Modal Versus Delay-and-Sum Beamforming in the Context of Data-Based Binaural Synthesis. In: AES Convention 132. Audio Engineering Society; 2012. Paper 8669. Available from: https://aes.org/publications/elibrary-page/?id=16307

@inproceedings{Spors2012_16307,
  author = {Spors, Sascha and Wierstorf, Hagen and Geier, Matthias},
  title = {{Comparison of Modal Versus Delay-and-Sum Beamforming in the Context of Data-Based Binaural Synthesis}},
  booktitle = {AES Convention 132},
  note = {Paper 8669},
  year = {2012},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16307}
}

TY  - CPAPER
TI  - Comparison of Modal Versus Delay-and-Sum Beamforming in the Context of Data-Based Binaural Synthesis
AU  - Spors, Sascha
AU  - Wierstorf, Hagen
AU  - Geier, Matthias
T2  - AES Convention 132
M1  - Paper 8669
PY  - 2012
DA  - 2012/04/06
UR  - https://aes.org/publications/elibrary-page/?id=16307
PB  - Audio Engineering Society
LA  - en
AB  - Several approaches to data-based binaural synthesis have been published that capture a sound field by means of a spherical microphone array. The captured sound field is typically decomposed into plane waves which are then auralized using head-related transfer functions (HRTFs). The decomposition into plane waves is often based on modal beamforming techniques which represent the captured sound field with respect to surface spherical harmonics. An efficient and numerically stable approximation to modal beamforming is the delay-and-sum technique. This paper compares these two beamforming techniques in the context of data-based binaural synthesis. Their frequency- and time-domain properties are investigated, as well as the perceptual properties of the resulting binaural synthesis according to a binaural model.
ER  -