An approximate solution for perceptually constrained signal subspace speech enhancement method

In this paper we present a low-complexity version of perceptually constrained signal subspace method (PCSS) for speech enhancement. An approximate solution is presented in a new form which provides perceptually optimal residual noise shaping. The proposed approach does not require a whitening transformation and is sub-optimal for coloured noise. A comparative evaluation of selected methods is performed using objective speech quality measures and informal listening tests. The results show that the approximate method outperforms conventional one and gives comparable results as the exact solution in common situations.

[1]  Peter Jax,et al.  A novel psychoacoustically motivated audio enhancement algorithm preserving background noise characteristics , 1998, Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98 (Cat. No.98CH36181).

[2]  Y. Ephraim,et al.  Extension of the signal subspace speech enhancement approach to colored noise , 2003, IEEE Signal Processing Letters.

[3]  Saeed Gazor,et al.  An adaptive KLT approach for speech enhancement , 2001, IEEE Trans. Speech Audio Process..

[4]  Susanto Rahardja,et al.  Signal subspace speech enhancement for audible noise reduction , 2005, Proceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005..

[5]  Alexander A. Petrovsky,et al.  An application of the warped discrete Fourier transform in the perceptual speech enhancement , 2006, Speech Commun..

[6]  Alexander A. Petrovsky,et al.  Warped DFT Based Perceptual Noise Reduction System , 2004 .

[7]  Yariv Ephraim,et al.  A signal subspace approach for speech enhancement , 1995, IEEE Trans. Speech Audio Process..

[8]  Benoît Champagne,et al.  Incorporating the human hearing properties in the signal subspace approach for speech enhancement , 2003, IEEE Trans. Speech Audio Process..

[9]  Robert E. Yantorno,et al.  Performance of the modified Bark spectral distortion as an objective speech quality measure , 1998, Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98 (Cat. No.98CH36181).

[10]  James D. Johnston,et al.  Transform coding of audio signals using perceptual noise criteria , 1988, IEEE J. Sel. Areas Commun..

[11]  Alexander A. Petrovsky,et al.  Perceptually Constrained Subspace Method for Enhancing Speech Degraded by Colored Noise , 2005 .