Controlling the Apparent SourceSize in Ambisonics Using Decorrelation Filters

Schmele T, Sayin U. Controlling the Apparent SourceSize in Ambisonics Using Decorrelation Filters. In: AES Conference: 2018 AES International Conference on Spatial Reproduction - Aesthetics and Science. Audio Engineering Society; 2018. Paper PP-4. Available from: https://aes.org/publications/elibrary-page/?id=19612

@inproceedings{Schmele2018_19612,
  author = {Schmele, Timothy and Sayin, Umut},
  title = {{Controlling the Apparent SourceSize in Ambisonics Using Decorrelation Filters}},
  booktitle = {AES Conference: 2018 AES International Conference on Spatial Reproduction - Aesthetics and Science},
  note = {Paper PP-4},
  year = {2018},
  month = jul,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=19612}
}

TY  - CPAPER
TI  - Controlling the Apparent SourceSize in Ambisonics Using Decorrelation Filters
AU  - Schmele, Timothy
AU  - Sayin, Umut
T2  - AES Conference: 2018 AES International Conference on Spatial Reproduction - Aesthetics and Science
M1  - Paper PP-4
PY  - 2018
DA  - 2018/07/06
UR  - https://aes.org/publications/elibrary-page/?id=19612
PB  - Audio Engineering Society
LA  - en
AB  - The apparent source extent, de?ned as the perceived sound source size, is a common parameter for 3D audio applications, such as VR, 3D cinema and spatialized music composition. Here, we present a new method for achieving this effect for Ambisonics, which targets the minimization of the interaural cross-correlation coef?cient. This is achieved by reducing the Ambisonic order and rotating decorrelated copies of the original stream into an equidistant con?guration. Comparisons to previous methods as well as different ?lter parameters and parameter curves are discussed for both binaural and multichannel speaker systems. Preliminary results indicate that this method is able to stable images, particularly in the gradual change in source size and listening area stability.
ER  -