An Adaptive Beam-Steering Microphone Array Implemented on the Motorola DSP56000 Digital Signal Processor

Angus JA, Kershaw S, Lewis A. An Adaptive Beam-Steering Microphone Array Implemented on the Motorola DSP56000 Digital Signal Processor. In: AES Convention 95. Audio Engineering Society; 1993. Paper 3761. Available from: https://aes.org/publications/elibrary-page/?id=6472

@inproceedings{Angus1993_6472,
  author = {Angus, James A. and Kershaw, Simon and Lewis, Alwyn},
  title = {{An Adaptive Beam-Steering Microphone Array Implemented on the Motorola DSP56000 Digital Signal Processor}},
  booktitle = {AES Convention 95},
  note = {Paper 3761},
  year = {1993},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=6472}
}

TY  - CPAPER
TI  - An Adaptive Beam-Steering Microphone Array Implemented on the Motorola DSP56000 Digital Signal Processor
AU  - Angus, James A.
AU  - Kershaw, Simon
AU  - Lewis, Alwyn
T2  - AES Convention 95
M1  - Paper 3761
PY  - 1993
DA  - 1993/10/06
UR  - https://aes.org/publications/elibrary-page/?id=6472
PB  - Audio Engineering Society
LA  - en
AB  - It has been suggested that beam-steering microphone arrays may provide considerable improvements over conventional directional microphones. This paper describes some of the relevant acoustic factors, and relates them to two basic methodologies of array beam-forming: source isolation/tracking and interference null steering. The basic theory of beam-forming is then reviewed, and methods of predicting array performance suggested. Results from practical work implementing an adaptive source isolation system in anechoic conditions are described, strongly validating proposed theory. Finally, deteriorated array performance in a real-room environment is presented, confirming the acoustic problems highlighted.
ER  -