Loudness of Next-Generation Audio contents depending on rendering conditions

Iwasaki T, Kubo H, Oode S. Loudness of Next-Generation Audio contents depending on rendering conditions. In: AES Convention 154. Audio Engineering Society; 2023. Paper 77. Available from: https://aes.org/publications/elibrary-page/?id=22102

@inproceedings{Iwasaki2023_22102,
  author = {Iwasaki, Taishi and Kubo, Hiroki and Oode, Satoshi},
  title = {{Loudness of Next-Generation Audio contents depending on rendering conditions}},
  booktitle = {AES Convention 154},
  note = {Paper 77},
  year = {2023},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=22102}
}

TY  - CPAPER
TI  - Loudness of Next-Generation Audio contents depending on rendering conditions
AU  - Iwasaki, Taishi
AU  - Kubo, Hiroki
AU  - Oode, Satoshi
T2  - AES Convention 154
M1  - Paper 77
PY  - 2023
DA  - 2023/05/06
UR  - https://aes.org/publications/elibrary-page/?id=22102
PB  - Audio Engineering Society
LA  - en
AB  - The loudness measurement method as specified in Recommendation ITU-R BS.1770 is widely used to align perceived loudness among contents. However, it is not covered with Next-Generation Audio (NGA) contents. It is considered appropriate to measure the loudness of NGA contents using the signals obtained after rendering processes. This measurement may lead to a conclusion of a different objective loudness depending on rendering conditions. To evaluate the loudness measurement method considered for NGA contents, objective and subjective tests were conducted. In these tests, several rendering conditions, including loudspeaker configurations (stereo, 5.1, 7.1, 5.1.4, 7.1.4, and 22.2) and rendering algorithms (MPEG-H 3D Audio Renderer, Dolby ATMOS Renderer with and without trim functions, and ITU-R ADM Renderer with polar and Cartesian coordinate systems), were compared. The results show that the loudspeaker configuration is more significantly affected than the rendering algorithm in terms of objective loudness and that differences between the objective and subjective loudness of NGA contents are comparable to those of channel-based audio contents.
ER  -