In Situ Microphone Array Calibration for Parameter Estimation in Directional Audio Coding

Thiergart O, Del Galdo G, Taseska M, Pineda Pardo JA, Kuech F. In Situ Microphone Array Calibration for Parameter Estimation in Directional Audio Coding. In: AES Convention 128. Audio Engineering Society; 2010. Paper 8093. Available from: https://aes.org/publications/elibrary-page/?id=15390

@inproceedings{Thiergart2010_15390,
  author = {Thiergart, Oliver and Del Galdo, Giovanni and Taseska, Maja and Pineda Pardo, Jose Angel and Kuech, Fabian},
  title = {{In Situ Microphone Array Calibration for Parameter Estimation in Directional Audio Coding}},
  booktitle = {AES Convention 128},
  note = {Paper 8093},
  year = {2010},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15390}
}

TY  - CPAPER
TI  - In Situ Microphone Array Calibration for Parameter Estimation in Directional Audio Coding
AU  - Thiergart, Oliver
AU  - Del Galdo, Giovanni
AU  - Taseska, Maja
AU  - Pineda Pardo, Jose Angel
AU  - Kuech, Fabian
T2  - AES Convention 128
M1  - Paper 8093
PY  - 2010
DA  - 2010/05/06
UR  - https://aes.org/publications/elibrary-page/?id=15390
PB  - Audio Engineering Society
LA  - en
AB  - Directional audio coding (DirAC) provides an efficient representation of spatial sound using a downmix audio signal and parametric information, namely direction-of-arrival (DOA) and diffuseness of sound. Input to the DirAC analysis are B-format signals, usually obtained via microphone arrays. The DirAC parameter estimation is impaired when phase or amplitude mismatch between the array sensors occurs. We present an approach for the in situ microphone array calibration solely based on the DirAC parameters. The algorithm aims at providing consistent parameter estimates rather than matching the sensors explicitly. It does neither require to remove the sensors from the array, nor depend on a priori knowledge such as the array size. We further propose a suitable excitation signal to ensure robust calibration in reverberant environments.
ER  -