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Reseach Article

Convolutive Blind Speech Separation using Cross Spectral Density Matrix and Clustering for Resolving Permutation

by C.Prabhu, S.Pradeep, R.Baskaran, C.Chellappan
International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 7 - Number 2
Year of Publication: 2010
Authors: C.Prabhu, S.Pradeep, R.Baskaran, C.Chellappan
10.5120/1141-1494

C.Prabhu, S.Pradeep, R.Baskaran, C.Chellappan . Convolutive Blind Speech Separation using Cross Spectral Density Matrix and Clustering for Resolving Permutation. International Journal of Computer Applications. 7, 2 ( September 2010), 1-6. DOI=10.5120/1141-1494

@article{ 10.5120/1141-1494,
author = { C.Prabhu, S.Pradeep, R.Baskaran, C.Chellappan },
title = { Convolutive Blind Speech Separation using Cross Spectral Density Matrix and Clustering for Resolving Permutation },
journal = { International Journal of Computer Applications },
issue_date = { September 2010 },
volume = { 7 },
number = { 2 },
month = { September },
year = { 2010 },
issn = { 0975-8887 },
pages = { 1-6 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume7/number2/1141-1494/ },
doi = { 10.5120/1141-1494 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T19:55:22.007994+05:30
%A C.Prabhu
%A S.Pradeep
%A R.Baskaran
%A C.Chellappan
%T Convolutive Blind Speech Separation using Cross Spectral Density Matrix and Clustering for Resolving Permutation
%J International Journal of Computer Applications
%@ 0975-8887
%V 7
%N 2
%P 1-6
%D 2010
%I Foundation of Computer Science (FCS), NY, USA
Abstract

The problem of separation of audio sources recorded in a real world situation is well established in modern literature. The method to solve this problem is Blind Speech Separation (BSS).The recording environment is usually modeled as convolutive (i.e. number of speech sources should be equal to or less than number of microphone arrays). In this paper, we propose a new frequency domain approach to convolutive blind speech separation. Matrix Diagonalization method is applied on cross power spectral density matrices of the microphone inputs to determine the mixing system at each frequency bin up to a permutation ambiguity. Then, we propose an efficient algorithm to resolve permutation ambiguity, where we group vectors of estimated frequency responses into clusters in such a way that each cluster contains frequency responses associated with the same source. The inverse of the mixing system is then used to find the separate sources. The performance of the proposed algorithm is demonstrated by experiments conducted in real reverberant rooms.

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Index Terms

Computer Science
Information Sciences

Keywords

Cross-Power Spectral Density Matrix Diagonalization Blind Speech Separation Permutation ambiguity Cluster