Optimized Parameter Estimation in Directional Audio Coding Using Nested Microphone Arrays

Del Galdo G, Thiergart O, Kuech F, Taseska M, Sishtla D. Optimized Parameter Estimation in Directional Audio Coding Using Nested Microphone Arrays. In: AES Convention 127. Audio Engineering Society; 2009. Paper 7911. Available from: https://aes.org/publications/elibrary-page/?id=15106

@inproceedings{DelGaldo2009_15106,
  author = {Del Galdo, Giovanni and Thiergart, Oliver and Kuech, Fabian and Taseska, Maja and Sishtla, Divya},
  title = {{Optimized Parameter Estimation in Directional Audio Coding Using Nested Microphone Arrays}},
  booktitle = {AES Convention 127},
  note = {Paper 7911},
  year = {2009},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15106}
}

TY  - CPAPER
TI  - Optimized Parameter Estimation in Directional Audio Coding Using Nested Microphone Arrays
AU  - Del Galdo, Giovanni
AU  - Thiergart, Oliver
AU  - Kuech, Fabian
AU  - Taseska, Maja
AU  - Sishtla, Divya
T2  - AES Convention 127
M1  - Paper 7911
PY  - 2009
DA  - 2009/10/06
UR  - https://aes.org/publications/elibrary-page/?id=15106
PB  - Audio Engineering Society
LA  - en
AB  - Directional Audio Coding (DirAC) is an efficient technique to capture and reproduce spatial sound on the basis of a downmix audio signal, direction of arrival, and diffuseness of sound. In practice, these parameters are determined using arrays of omnidirectional microphones. The main drawback of such configurations is that the estimates are reliable only in a certain frequency range, which depends on the array size. To overcome this problem and cover large bandwidths, we propose concentric arrays of different sizes. We derive optimal joint estimators for the DirAC parameters with respect to the mean squared error. We address the problem of choosing the optimal array sizes for specific applications such as teleconferencing and we verify our findings with measurements.
ER  -