Acoustic Characteristics Analysis of the Axi-symmetric Transducer by the combined Finite Element Method and Hybrid Type Infinite Element Method, Part II : Wideband Array Transducer Design and its Acoustic Characteristics
Chun-Duck Kim, Won-Ho Kim, Dae-Whan Kim, Jong Rak Yoon · The Journal of the Acoustical Society of Korea · 1994
In many applications of signal processing, we have to deal with densities which are highly non-Gaussian or which may have Gaussian shape in the middle but have potent deviations in the tails. To fight against these deviations, we consider a finite mixture distribution for the speech excitation. We utilize the EM algorithm for the estimation of speech parameters and their enhancement. Robust Kalman filtering is used in the enhancement process, and a detection/estimation technique is used for parameter estimation. Experimental results show that the proposed algorithm performs better in adverse SNR input conditions.