Soft constrained subband beamforming for hands-free speech enhancement

  title={Soft constrained subband beamforming for hands-free speech enhancement},
  author={Nedelko Grbic and Sven Nordholm},
  journal={2002 IEEE International Conference on Acoustics, Speech, and Signal Processing},
This paper introduces a new constrained adaptive subband beamformer algorithm for speech enhancement in acoustic telecommunication systems. The solution relies on a pre-calculated source covariance matrix and recursive estimates of background noise- and handsfree signal covariance matrices. The constraint acts as an eye-opening in a vicinity of the near-field location of the source and degradations from steering-vector errors can therefor be made small. The algorithm is applied in subbands… CONTINUE READING
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