@article{ART000976535},
author={Soyeon Min and Myung Jin Bae and 김은환},
title={A Study on an Improvement of the Performance by Spectrum Analysis with Variable Window in CELP Vocoder},
journal={Journal of The Korea Society of Computer and Information},
issn={1598-849X},
year={2005},
volume={10},
number={6},
pages={233-238}
TY - JOUR
AU - Soyeon Min
AU - Myung Jin Bae
AU - 김은환
TI - A Study on an Improvement of the Performance by Spectrum Analysis with Variable Window in CELP Vocoder
JO - Journal of The Korea Society of Computer and Information
PY - 2005
VL - 10
IS - 6
PB - The Korean Society Of Computer And Information
SP - 233
EP - 238
SN - 1598-849X
AB - In general CELP(Code Excited Linear Prediction) type vocoders provide good speech quality around 4.8kbps. Among them, G.723.1 developed for Internet Phone and video-conferencing includes two vocoders, 5.3kbps ACELP(Algebraic-CELP) and 6.3kbps MP-MLQ(Multi-Pulse Maximum Likelihood Quantization). In order to improve the speech quality in CELP vocoder, in this paper, we proposed a new spectrum analysis algorithm with variable window. In CELP vocoder, the spectrum of the synthesised speech signal is distorted because the fixed size windows is used for spectrum analysis. So we have measured the spectral leakage and in order to minimize the spectral leakage have adjusted the window size. Applying this method G.723.1 ACELP, we can get SD(Spectral Distortion) reduction 0.084(dB), residual energy reduction 6.3% and MOS(Mean Opinion Score) improvement 0.1.
KW - Variable Window;CELP Vocoder;Fixed Size Window;Spectrum Leakage
DO -
UR -
ER -
Soyeon Min, Myung Jin Bae and 김은환. (2005). A Study on an Improvement of the Performance by Spectrum Analysis with Variable Window in CELP Vocoder. Journal of The Korea Society of Computer and Information, 10(6), 233-238.
Soyeon Min, Myung Jin Bae and 김은환. 2005, "A Study on an Improvement of the Performance by Spectrum Analysis with Variable Window in CELP Vocoder", Journal of The Korea Society of Computer and Information, vol.10, no.6 pp.233-238.
Soyeon Min, Myung Jin Bae, 김은환 "A Study on an Improvement of the Performance by Spectrum Analysis with Variable Window in CELP Vocoder" Journal of The Korea Society of Computer and Information 10.6 pp.233-238 (2005) : 233.
Soyeon Min, Myung Jin Bae, 김은환. A Study on an Improvement of the Performance by Spectrum Analysis with Variable Window in CELP Vocoder. 2005; 10(6), 233-238.
Soyeon Min, Myung Jin Bae and 김은환. "A Study on an Improvement of the Performance by Spectrum Analysis with Variable Window in CELP Vocoder" Journal of The Korea Society of Computer and Information 10, no.6 (2005) : 233-238.
Soyeon Min; Myung Jin Bae; 김은환. A Study on an Improvement of the Performance by Spectrum Analysis with Variable Window in CELP Vocoder. Journal of The Korea Society of Computer and Information, 10(6), 233-238.
Soyeon Min; Myung Jin Bae; 김은환. A Study on an Improvement of the Performance by Spectrum Analysis with Variable Window in CELP Vocoder. Journal of The Korea Society of Computer and Information. 2005; 10(6) 233-238.
Soyeon Min, Myung Jin Bae, 김은환. A Study on an Improvement of the Performance by Spectrum Analysis with Variable Window in CELP Vocoder. 2005; 10(6), 233-238.
Soyeon Min, Myung Jin Bae and 김은환. "A Study on an Improvement of the Performance by Spectrum Analysis with Variable Window in CELP Vocoder" Journal of The Korea Society of Computer and Information 10, no.6 (2005) : 233-238.
