Robust reverberation time estimation for audio augmented reality applications

Treybig L, Werner S, Klein F, Gari AGSV. Robust reverberation time estimation for audio augmented reality applications. In: AES Convention 154. Audio Engineering Society; 2023. Paper 10640. Available from: https://aes.org/publications/elibrary-page/?id=22047

@inproceedings{Treybig2023_22047,
  author = {Treybig, Lukas and Werner, Stephan and Klein, Florian and Gari, Amengual Garí, Sebastià V},
  title = {{Robust reverberation time estimation for audio augmented reality applications}},
  booktitle = {AES Convention 154},
  note = {Paper 10640},
  year = {2023},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=22047}
}

TY  - CPAPER
TI  - Robust reverberation time estimation for audio augmented reality applications
AU  - Treybig, Lukas
AU  - Werner, Stephan
AU  - Klein, Florian
AU  - Gari, Amengual Garí, Sebastià V
T2  - AES Convention 154
M1  - Paper 10640
PY  - 2023
DA  - 2023/05/06
UR  - https://aes.org/publications/elibrary-page/?id=22047
PB  - Audio Engineering Society
LA  - en
AB  - The paper presents an alternative approach for estimating reverberation time from measurements in real rooms when the requirements of the standard DIN EN ISO 3382-1/2 for the characteristics of the sound source, receiver, and measurement positions cannot be met. The main goal is to minimize the variance of the calculated reverberation times when using a directional source and receiver, or source-receiver relative positions with very small distances. For this purpose, the energy decay curve for individual octave bands is sampled in time. The estimation starts 2 ms after the direct sound. This is followed by several estimates of the RT over a 20 dB drop, starting 1 dB later with each iteration. The best fit mean of these values gives the estimated reverberation time. A comparison with the standard reverberation time estimation shows a variance reduction of 10% to 30% for binaural room impulse responses (BRIRs). The proposed method finds its application in situations where measurements can only be made at a few positions in the room and/or only in a few areas of the room. Furthermore, the method should be better suitable for measurements with receivers located near or at the head of a person.
ER  -