Adaptive β-order MMSE estimation for speech enhancement
Changhuai You, Soo-Ngee Koh, Susanto Rahardja · 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). · 2003
This paper introduces an adaptive /spl beta/-order minimum mean square error (MMSE) spectral estimator for the short time spectral amplitude (STSA) of speech. The characteristic of /spl beta/-order MMSE attenuation function is introduced and analyzed. The performance of the proposed adaptive /spl beta/-order MMSE has been thoroughly examined by a large number of computer simulations. The new proposed scheme has been found to outperform the conventional a priori SNR Wiener filtering, the Ephraim and Malah (1984) STSA-MMSE and log spectral amplitude (LSA) schemes. It can achieve a more significant noise reduction and a better spectral estimation for weak speech components from a noisy speech signal as compared to the conventional schemes.