Lossless Compression of Spherical Microphone Array Recordings

Hellerud E, Svensson UP. Lossless Compression of Spherical Microphone Array Recordings. In: AES Convention 126. Audio Engineering Society; 2009. Paper 7668. Available from: https://aes.org/publications/elibrary-page/?id=14864

@inproceedings{Hellerud2009_14864,
  author = {Hellerud, Erik and Svensson, U. Peter},
  title = {{Lossless Compression of Spherical Microphone Array Recordings}},
  booktitle = {AES Convention 126},
  note = {Paper 7668},
  year = {2009},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14864}
}

TY  - CPAPER
TI  - Lossless Compression of Spherical Microphone Array Recordings
AU  - Hellerud, Erik
AU  - Svensson, U. Peter
T2  - AES Convention 126
M1  - Paper 7668
PY  - 2009
DA  - 2009/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14864
PB  - Audio Engineering Society
LA  - en
AB  - The amount of spatial redundancy for recordings from a spherical microphone array is evaluated using a low delay lossless compression scheme. The original microphone signals, as well as signals transformed to the spherical harmonics domain, are investigated. It is found that the correlation between channels is, as expected, very high for the microphone signals, in several different acoustical environments. For the signals in the spherical harmonics domain, the compression gain from using inter-channel prediction is reduced, since this conversion results in many channels with low energy. Several alternatives for reducing the coding complexity are also investigated.
ER  -