Spatial Sound Encoding Including Near Field Effect: Introducing Distance Coding Filters and a Viable, New Ambisonic Format

Daniel J. Spatial Sound Encoding Including Near Field Effect: Introducing Distance Coding Filters and a Viable, New Ambisonic Format. In: AES Conference: 23rd International Conference: Signal Processing in Audio Recording and Reproduction. Audio Engineering Society; 2003. Paper 16. Available from: https://aes.org/publications/elibrary-page/?id=12321

@inproceedings{Daniel2003_12321,
  author = {Daniel, Jerome},
  title = {{Spatial Sound Encoding Including Near Field Effect: Introducing Distance Coding Filters and a Viable, New Ambisonic Format}},
  booktitle = {AES Conference: 23rd International Conference: Signal Processing in Audio Recording and Reproduction},
  note = {Paper 16},
  year = {2003},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12321}
}

TY  - CPAPER
TI  - Spatial Sound Encoding Including Near Field Effect: Introducing Distance Coding Filters and a Viable, New Ambisonic Format
AU  - Daniel, Jerome
T2  - AES Conference: 23rd International Conference: Signal Processing in Audio Recording and Reproduction
M1  - Paper 16
PY  - 2003
DA  - 2003/05/06
UR  - https://aes.org/publications/elibrary-page/?id=12321
PB  - Audio Engineering Society
LA  - en
AB  - Higher Order Ambisonics have been increasingly investigated in the past years, and found promising as a rational, scalable and flexible way to encode, transmit and render 3D sound fields. Nevertheless, studies concerning virtural source imaging or natural 3D sound encoding mainly focussed on the directional encoding of plane waves, and neglected the near field effect of finite distance sources though it's present in any ordinary sound field. This paper highlights that with near field, the infinite bass-boost affecting ambisonic components makes the currently accepted format unviable. By introducing from the encoding stage a near field compensation of reproduction loudspeakers, a viable, modified ambisonic format is defined, distance-coding filters are designed, and higher order ambisonic recording and synthesis become practicable.
ER  -