Title :
On the importance of the excitation signal generation method in bandwidth extension of speech
Author :
Rodriguez, Sergio A. ; Burt, Phillip M S
Author_Institution :
Dept. Telecomm. & Control Eng., Sao Paulo Univ., Brazil
Abstract :
The purpose of this work is to show the importance of an adequate generation of the excitation signal for the performance of bandwidth extension algorithms for speech signals. Two previously proposed methods of obtaining the excitation signal are analyzed and, based on this analysis, a new method is proposed. The influence of each method in the quality of the reconstructed wideband speech signal is evaluated by quantitative parameters of speech quality.
Keywords :
signal reconstruction; speech processing; bandwidth extension of speech; excitation signal generation method; extension algorithms; speech signals; wideband speech signal reconstruction; Bandwidth; Control engineering; Linear predictive coding; Narrowband; Signal analysis; Signal generators; Signal processing; Speech analysis; Vectors; Wideband;
Conference_Titel :
Signal Processing Systems Design and Implementation, 2005. IEEE Workshop on
Print_ISBN :
0-7803-9333-3
DOI :
10.1109/SIPS.2005.1579907
