Using multiple ambisonic room impulse responses to increase the sensation of envelopment produced by a reverberation effect.

Salmon F, Berthomieu G, Gibert X, Verron C, Paquier M. Using multiple ambisonic room impulse responses to increase the sensation of envelopment produced by a reverberation effect. In: AES 2024 International Conference on Audio for Virtual and Augmented Reality. Audio Engineering Society; 2024. Paper 10. Available from: https://aes.org/publications/elibrary-page/?id=22659

@inproceedings{Salmon2024_22659,
  author = {Salmon, François and Berthomieu, Gauthier and Gibert, Xavier and Verron, Charles and Paquier, Mathieu},
  title = {{Using multiple ambisonic room impulse responses to increase the sensation of envelopment produced by a reverberation effect.}},
  booktitle = {AES 2024 International Conference on Audio for Virtual and Augmented Reality},
  note = {Paper 10},
  year = {2024},
  month = aug,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=22659}
}

TY  - CPAPER
TI  - Using multiple ambisonic room impulse responses to increase the sensation of envelopment produced by a reverberation effect.
AU  - Salmon, François
AU  - Berthomieu, Gauthier
AU  - Gibert, Xavier
AU  - Verron, Charles
AU  - Paquier, Mathieu
T2  - AES 2024 International Conference on Audio for Virtual and Augmented Reality
M1  - Paper 10
PY  - 2024
DA  - 2024/08/05
UR  - https://aes.org/publications/elibrary-page/?id=22659
PB  - Audio Engineering Society
LA  - en
AB  - Spherical microphone arrays (SMAs) provide a sound field representation that is independent of the playback system, while having the practical advantage of being compact. However, they produce a limited sense of envelopment compared to spaced microphone array techniques. Previous studies suggest that the combination of recordings from two spaced-SMAs can influence the spatial impressions of a sound scene with the introduction of inter-channel time differences. This study explores reverberation effects generated using various combinations of Ambisonic Room Impulse Responses (ARIRs) measured at different positions in two rooms using a 7th-order SMA. These reverberation effects combined up to four different ARIRs and were compared to a single-ARIR reference by means of a listening test. Listeners evaluated the stimuli according to the Global quality and the Envelopment by reverberation over a 7.0.4 loudspeaker setup. Results showed that the combination of multiple ARIRs had a significant influence on the sense of envelopment. The scores were notably higher for stimuli that had the lowest inter-channel correlation between non-frontal and frontal channel signals. However, a significant increase in the sense of envelopment did not result in higher Global quality ratings.
ER  -