Source position interpolation of spatial room impulse responses

McKenzie T, Schlecht SJ. Source position interpolation of spatial room impulse responses. In: AES Convention 154. Audio Engineering Society; 2023. Paper 10637. Available from: https://aes.org/publications/elibrary-page/?id=22044

@inproceedings{McKenzie2023_22044,
  author = {McKenzie, Thomas and Schlecht, Sebastian J.},
  title = {{Source position interpolation of spatial room impulse responses}},
  booktitle = {AES Convention 154},
  note = {Paper 10637},
  year = {2023},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=22044}
}

TY  - CPAPER
TI  - Source position interpolation of spatial room impulse responses
AU  - McKenzie, Thomas
AU  - Schlecht, Sebastian J.
T2  - AES Convention 154
M1  - Paper 10637
PY  - 2023
DA  - 2023/05/06
UR  - https://aes.org/publications/elibrary-page/?id=22044
PB  - Audio Engineering Society
LA  - en
AB  - Measured spatial room impulse responses (SRIRs) are often used for realistic six degrees-of-freedom (6DoF) virtual reality applications, as they allow for the high quality capture and reproduction of a room’s acoustics. Dense sets of SRIR measurements are time consuming to acquire, especially for multiple source and receiver combinations, and so interpolation of sparse measurement sets is required. This paper presents a method for interpolating between higher-order Ambisonic SRIRs with a fixed receiver position but different sound source positions, using a previous methodology. The method is based on linear interpolation with spectral equalisation and RMS compensation, though direct sound, early reflections and late reverberation are processed individually. In a numerical comparison to a basic linear interpolation, the proposed method is shown to more smoothly fade between source positions in root-mean-square amplitude and direction-of-arrival metrics.
ER  -