Loudness Perception of Scene-Based Audio across Loudspeaker Configurations and HOA Orders

Peters N, Epain N. Loudness Perception of Scene-Based Audio across Loudspeaker Configurations and HOA Orders. In: AES Convention 154. Audio Engineering Society; 2023. Paper 10658. Available from: https://aes.org/publications/elibrary-page/?id=22070

@inproceedings{Peters2023_22070,
  author = {Peters, Nils and Epain, Nicolas},
  title = {{Loudness Perception of Scene-Based Audio across Loudspeaker Configurations and HOA Orders}},
  booktitle = {AES Convention 154},
  note = {Paper 10658},
  year = {2023},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=22070}
}

TY  - CPAPER
TI  - Loudness Perception of Scene-Based Audio across Loudspeaker Configurations and HOA Orders
AU  - Peters, Nils
AU  - Epain, Nicolas
T2  - AES Convention 154
M1  - Paper 10658
PY  - 2023
DA  - 2023/05/06
UR  - https://aes.org/publications/elibrary-page/?id=22070
PB  - Audio Engineering Society
LA  - en
AB  - Reliable loudness calculation of audio material is an essential component for professional content production and delivery. While ITU-R BS.1770-4 has become a well-established standard for loudness measurement of channel-based content, it remains unclear how well the loudness of Scene-Base Audio content, i.e., (Higher-Order) Ambisonics, can be estimated with it. This paper presents a listening test to assess the perceived loudness of Scene-Based Audio at different HOA orders and rendered to different loudspeaker layouts using the EBU ADM renderer. The results indicate that perceived loudness is merely a function of the audio material and only slightly differs across loudspeaker configurations and HOA Orders. For comparison, the loudness is also estimated directly from the 0th-order coefficient, and indirectly from the respective loudspeaker feeds in accordance to ITU-R BS.1770-4. It was found that both methods moderately but consistently underestimated the perceived loudness.
ER  -