论文信息 - Beamforming microphone arrays for speech enhancement

Beamforming microphone arrays for speech enhancement

It is shown that beamforming with microphone arrays can be used to significantly reduce the effects of noise and reverberation. The Frost algorithm and a new vectorized algorithm called the row-action projection (RAP) method are shown to yield approximately 11 dB of interference suppression. Computer simulations demonstrate the performance of the beamforming techniques for various locations of interference sources. The scenarios used for the computer simulations consist of a speech signal arriving normal to the array contaminated with speech interference from an unknown direction off the normal. The direction of the desired speaker is taken to the normal to the array for the simulation; however, it could be at any specified 'look direction'.<<ETX>>

[1] Richard J. Mammone,et al. A row-action projection algorithm for adaptive filtering , 1990, International Conference on Acoustics, Speech, and Signal Processing.

[2] L. J. Griffiths,et al. An alternative approach to linearly constrained adaptive beamforming , 1982 .

[3] J. Flanagan,et al. Computer‐steered microphone arrays for sound transduction in large rooms , 1985 .

[4] Randy L. Haupt,et al. Introduction to Adaptive Arrays , 1980 .

[5] Richard J. Mammone,et al. An adaptive technique for high resolution time-varying spectral estimation , 1991, [Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing.

[6] O. L. Frost,et al. An algorithm for linearly constrained adaptive array processing , 1972 .

[7] Dirk Van Compernolle,et al. Switching adaptive filters for enhancing noisy and reverberant speech from microphone array recordings , 1990, ICASSP.