DocumentCode :
251267
Title :
Optimal multichannel equalization for robust speech dereverberation
Author :
Maruf, Abdullah-Al ; Haque, Mohammad Ariful
Author_Institution :
Electr. & Electron. Eng., Bangladesh Univ. of Eng. & Technol., Dhaka, Bangladesh
fYear :
2014
fDate :
20-22 Dec. 2014
Firstpage :
270
Lastpage :
273
Abstract :
Ideal acoustic multichannel equalization technique based on multiple-input/output inverse theorem (MINT) aims to completely invert the estimated room impulse responses (RIRs) between the source and microphone arrays. However, the method is known to be very sensitive to the estimation errors of the RIRs. In order to increase robustness, regularized MINT (R-MINT) has been proposed that overcomes the limitation by decreasing the energy of the equalization filters. In this paper, we analyze the solution of the R-MINT method and introduce a number of different ways to increase the robustness of the MINT method. Recently, regularized partial MINT (RP-MINT) method has been proposed that provides better perceptual speech quality compare to the R-MINT method. We also propose a new regularized optimal partial MINT (ROP-MINT) method which aims to optimize the equalized impulse response (EIR) between the source and output of the system. Simulation experiments conducted in various reverberant environments demonstrate that performance of our proposed ROP-MINT is better than that of the RP-MINT method.
Keywords :
equalisers; estimation theory; speech processing; transient response; RIR estimation; RP-MINT method; equalization filters; ideal acoustic multichannel equalization technique; microphone arrays; multiple-input/output inverse theorem; perceptual speech quality; regularized optimal partial MINT method; regularized partial MINT method; robust speech dereverberation; room impulse responses estimation; Cost function; Eigenvalues and eigenfunctions; Microphones; Reflection; Reverberation; Robustness; Speech; multichannel equalization; optimization; regularization; speech dereverberation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical and Computer Engineering (ICECE), 2014 International Conference on
Conference_Location :
Dhaka
Print_ISBN :
978-1-4799-4167-4
Type :
conf
DOI :
10.1109/ICECE.2014.7026908
Filename :
7026908
Link To Document :
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