The Native B-Format Microphone

Benjamin E, Chen T. The Native B-Format Microphone. In: AES Convention 119. Audio Engineering Society; 2005. Paper 6621. Available from: https://aes.org/publications/elibrary-page/?id=13348

@inproceedings{Benjamin2005_13348,
  author = {Benjamin, Eric and Chen, Thomas},
  title = {{The Native B-Format Microphone}},
  booktitle = {AES Convention 119},
  note = {Paper 6621},
  year = {2005},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13348}
}

TY  - CPAPER
TI  - The Native B-Format Microphone
AU  - Benjamin, Eric
AU  - Chen, Thomas
T2  - AES Convention 119
M1  - Paper 6621
PY  - 2005
DA  - 2005/10/06
UR  - https://aes.org/publications/elibrary-page/?id=13348
PB  - Audio Engineering Society
LA  - en
AB  - Ambisonic sound recording is predicated on the acquisition of audio signals in what has been termed “B-format”, which is the output of a microphone array known as the Soundfield Microphone. That microphone is a tetrahedral array of nominally cardioid microphone capsules. The capsule signals are processed in such a way as to give four output signals which are proportional to the pressure and the three-dimensional particle velocity vector at the center of the array. These same signals can be achieved by the use of a single omnidirectional microphone and three figure-of-eight microphones located close to each other. Errors in the shape of the polar pattern or in the ratio of the direct to diffuse-field sensitivity of the microphones result. The two methods are compared in both a theoretical analysis and in acoustical measurements. The results of the comparison of experimental recordings using these two types of arrays will be presented in part two of this paper.
ER  -