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Non-negative matrix factorization based single channel source separation

Author(s)
SANTOSH KUMAR S School of ECE, REVA University, Bengaluru, Department of ECE, Sri Venkateshwara College of Engineering, Bengaluru, India
BHARATHI S H School of ECE, REVA University, Bengaluru, India
Abstract
The significance of speech recognition systems is widespread, encompassing applications like speech translation, robotics, and security. However, these systems often encounter challenges arising from noise and source mixing during signal acquisition, leading to performance degradation. Addressing this, cutting-edge solutions must effectively incorporate temporal dependencies spanning longer periods than a single time frame. To tackle this issue, this study introduces a novel model employing non-negative matrix factorization (NMF) modelling. This technique harnesses the scattering transform, involving wavelet filters and pyramid scattering, to compute sources and mitigate undesired signals. Once signal estimation is achieved, a source separation algorithm is devised, employing an optimization process grounded in training and testing approaches. By quantifying performance metrics, a comparative analysis is conducted between existing methods and the proposed model. Results indicate the superior performance of the suggested approach, underscored by these metrics. This signifies that the NMF and scattering transform-based model adeptly addresses the challenge of effectively utilizing temporal dependencies spanning more than a single time frame, ultimately enhancing speech recognition system efficacy.
Publication Details
Page(s) 13-21
DOI DOI not available
Published Journal: International Journal of Communication Networks and Information Security, Volume: 15, Issue: 2, Year: 2023

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Keywords
Neural Network, Wavelet Transform, Matrix Factorization, Automatic Speech Recognition, Source Mixing
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