Artículos relacionados a Speech Enhancement: Algorithm and Architecture

Speech Enhancement: Algorithm and Architecture - Tapa blanda

Pavel Sinha

 
9783639098372: Speech Enhancement: Algorithm and Architecture
Tapa blanda
ISBN 10: 3639098374 ISBN 13: 9783639098372
Editorial: KS OmniScriptum Publishing, 2008

Sinopsis

This thesis presents algorithm and architecture for simultaneous diagonalization of matrices. As an example, a subspace-based speech enhancement problem is considered, where in the covariance matrices of the speech and noise are diagonalized simultaneously. In order to compare the system performance of the proposed algorithm, objective measurements of speech enhancement is shown in terms of the signal to noise ratio and mean bark spectral distortion at various noise levels. In addition, an innovative subband analysis technique for subspace-based time-domain constrained speech enhancement technique is proposed. The proposed technique analyses the signal in its subbands to build accurate estimates of the covariance matrices of speech and noise, exploiting the inherent low varying characteristics of speech and noise signals in narrow bands. The subband approach also decreases the computation time by reducing the order of the matrices to be simultaneously diagonalized. Further, architecture is proposed to implement the simultaneous diagonalization scheme. The architecture is implemented on a Xilinx FPGA. FPGA resource utilization re-enforces on the practicability of the design.

"Sinopsis" puede pertenecer a otra edición de este libro.

Reseña del editor

This thesis presents algorithm and architecture for simultaneous diagonalization of matrices. As an example, a subspace-based speech enhancement problem is considered, where in the covariance matrices of the speech and noise are diagonalized simultaneously. In order to compare the system performance of the proposed algorithm, objective measurements of speech enhancement is shown in terms of the signal to noise ratio and mean bark spectral distortion at various noise levels. In addition, an innovative subband analysis technique for subspace-based time-domain constrained speech enhancement technique is proposed. The proposed technique analyses the signal in its subbands to build accurate estimates of the covariance matrices of speech and noise, exploiting the inherent low varying characteristics of speech and noise signals in narrow bands. The subband approach also decreases the computation time by reducing the order of the matrices to be simultaneously diagonalized. Further, architecture is proposed to implement the simultaneous diagonalization scheme. The architecture is implemented on a Xilinx FPGA. FPGA resource utilization re-enforces on the practicability of the design.

"Sobre este título" puede pertenecer a otra edición de este libro.

Editorial
KS OmniScriptum Publishing
Año de publicación
2008
Idioma
Inglés
ISBN 10 
3639098374
ISBN 13 
9783639098372
Encuadernación
Tapa blanda
Número de páginas
152
Contacto del fabricante
no disponible
Persona responsable
no disponible