Obtaining a Highly Directive Center Channel from Coincident Stereo Microphone Signals

Faller C. Obtaining a Highly Directive Center Channel from Coincident Stereo Microphone Signals. In: AES Convention 124. Audio Engineering Society; 2008. Paper 7380. Available from: https://aes.org/publications/elibrary-page/?id=14510

@inproceedings{Faller2008_14510,
  author = {Faller, Christof},
  title = {{Obtaining a Highly Directive Center Channel from Coincident Stereo Microphone Signals}},
  booktitle = {AES Convention 124},
  note = {Paper 7380},
  year = {2008},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14510}
}

TY  - CPAPER
TI  - Obtaining a Highly Directive Center Channel from Coincident Stereo Microphone Signals
AU  - Faller, Christof
T2  - AES Convention 124
M1  - Paper 7380
PY  - 2008
DA  - 2008/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14510
PB  - Audio Engineering Society
LA  - en
AB  - Time-frequency based post-processing applied to a coincident stereo recording is proposed to generate an audio signal with a highly directive directional response pointing straight forward. Assuming an ideal coincident stereo microphone, the directional response of this center channel is effectively time and frequency invariant. Further, the look direction can be steered to left and right front directions. The technique is based on the insight that the signal which predicts left from right, modified by limiting the magnitude of the frequency domain prediction gains, has a center forward directional response. The center channel is generated using both, a left-right and a right-left magnitude-limited-predictor signal. Applications of the proposed scheme are use of stereo microphones as ``digital steerable shot gun microphones' and center channel generation for music recording.
ER  -