Further Study of Sound Field Coding with Higher Order Ambisonics

Daniel J, Moreau S. Further Study of Sound Field Coding with Higher Order Ambisonics. In: AES Convention 116. Audio Engineering Society; 2004. Paper 6017. Available from: https://aes.org/publications/elibrary-page/?id=12789

@inproceedings{Daniel2004_12789,
  author = {Daniel, Jerome and Moreau, Sebastien},
  title = {{Further Study of Sound Field Coding with Higher Order Ambisonics}},
  booktitle = {AES Convention 116},
  note = {Paper 6017},
  year = {2004},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12789}
}

TY  - CPAPER
TI  - Further Study of Sound Field Coding with Higher Order Ambisonics
AU  - Daniel, Jerome
AU  - Moreau, Sebastien
T2  - AES Convention 116
M1  - Paper 6017
PY  - 2004
DA  - 2004/05/06
UR  - https://aes.org/publications/elibrary-page/?id=12789
PB  - Audio Engineering Society
LA  - en
AB  - Higher Order Ambisonics (HOA) provides a rational and flexible way for spatial encoding, conveying and rendering of 3D sound fields. For this reason it has known a growing interest over past years. Nevertheless, representing near field sources and recording natural sound fields has been addressed only quite recently. This raises the problem of "infinite bass-boost", which a recent approach (NFC-HOA) solves while being fully equivalent with spherical harmonics representation. To better handle problematic cases where bass-boost remains excessive, the present study discusses the actual usefulness of some spatial components depending on the area targeted for sound field reconstruction. Therefore it suggests frequency dependent restriction of spatial resolution by high-passing spatial components. As a particular result, it shows that a much moderated amplification is sufficient to efficiently model sound sources at any distance, and derives a safe and fine solution to simulate sources inside the listening area.
ER  -