Natural Ambiance Expansion Processing For An Automotive Environment

Noh D, De Balasy J. Natural Ambiance Expansion Processing For An Automotive Environment. In: AES Convention 155. Audio Engineering Society; 2023. Paper 110. Available from: https://aes.org/publications/elibrary-page/?id=22264

@inproceedings{Noh2023_22264,
  author = {Noh, Daekyoung and De Balasy, Jules},
  title = {{Natural Ambiance Expansion Processing For An Automotive Environment}},
  booktitle = {AES Convention 155},
  note = {Paper 110},
  year = {2023},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=22264}
}

TY  - CPAPER
TI  - Natural Ambiance Expansion Processing For An Automotive Environment
AU  - Noh, Daekyoung
AU  - De Balasy, Jules
T2  - AES Convention 155
M1  - Paper 110
PY  - 2023
DA  - 2023/10/06
UR  - https://aes.org/publications/elibrary-page/?id=22264
PB  - Audio Engineering Society
LA  - en
AB  - An automotive cabin is much smaller than a typical room and contains a combination of reflective and absorptive materials in proximity. As a result, the acoustic response within the cabin sound is initially dense but decays quickly. This creates a dry, unnatural, and less immersive sound field as compared to typical room environments. One approach to address this phenomenon has been to equalize the acoustics of the vehicle cabin and/or introduce artificial reverberation that better matches the desired acoustic properties. However, it is challenging to fully neutralize the acoustics of the cabin due to a dependency on head position and the non-minimum phase behavior within the space. This paper describes a more practical method of morphing the acoustics of the cabin to that of a more desirable space by integrating the reverberation decay characteristics of the vehicle and the desired room through cross-analysis, energy normalization, and frequency spectrum equalization.
ER  -