The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Dans cet article, nous proposons une méthode de codage adaptative du livre de codes fixe dans les codeurs CELP et implémentons un codeur vocal adaptatif à prédiction linéaire excitée par code fixe (AF-CELP) en tant qu'extension à faible débit du CS-ACELP à 8 kbit/s. . L'AF-CELP peut être mis en œuvre à de faibles débits binaires ainsi qu'avec une faible complexité en exploitant le fait que la contribution du livre de codes fixe au signal vocal est périodique, tout comme la contribution du livre de codes adaptatif (ou filtre de hauteur). Les tests d'écoute montrent que l'AF-CELP à 6.4 kbit/s a une qualité comparable à celle du CS-ACELP à 8 kbit/s dans des conditions d'essai environnementales réelles.
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Copier
Hong Kook KIM, Hwang Soo LEE, "A Low-Bit-Rate Extension Algorithm to the 8 kbit/s CS-ACELP Based on Adaptive Fixed Codebook Modeling" in IEICE TRANSACTIONS on Information,
vol. E82-D, no. 7, pp. 1087-1092, July 1999, doi: .
Abstract: In this paper, we propose an adaptive encoding method of fixed codebook in CELP coders and implement an adaptive fixed code-excited linear prediction (AF-CELP) speech coder as a low-bit-rate extension to the 8 kbit/s CS-ACELP. The AF-CELP can be implemented at low bit rates as well as low complexity by exploiting the fact that the fixed codebook contribution to the speech signal is periodic, as is the adaptive codebook (or pitch filter) contribution. Listening tests show that the 6.4 kbit/s AF-CELP has a comparable quality to the 8 kbit/s CS-ACELP under real environmental test conditions.
URL: https://global.ieice.org/en_transactions/information/10.1587/e82-d_7_1087/_p
Copier
@ARTICLE{e82-d_7_1087,
author={Hong Kook KIM, Hwang Soo LEE, },
journal={IEICE TRANSACTIONS on Information},
title={A Low-Bit-Rate Extension Algorithm to the 8 kbit/s CS-ACELP Based on Adaptive Fixed Codebook Modeling},
year={1999},
volume={E82-D},
number={7},
pages={1087-1092},
abstract={In this paper, we propose an adaptive encoding method of fixed codebook in CELP coders and implement an adaptive fixed code-excited linear prediction (AF-CELP) speech coder as a low-bit-rate extension to the 8 kbit/s CS-ACELP. The AF-CELP can be implemented at low bit rates as well as low complexity by exploiting the fact that the fixed codebook contribution to the speech signal is periodic, as is the adaptive codebook (or pitch filter) contribution. Listening tests show that the 6.4 kbit/s AF-CELP has a comparable quality to the 8 kbit/s CS-ACELP under real environmental test conditions.},
keywords={},
doi={},
ISSN={},
month={July},}
Copier
TY - JOUR
TI - A Low-Bit-Rate Extension Algorithm to the 8 kbit/s CS-ACELP Based on Adaptive Fixed Codebook Modeling
T2 - IEICE TRANSACTIONS on Information
SP - 1087
EP - 1092
AU - Hong Kook KIM
AU - Hwang Soo LEE
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Information
SN -
VL - E82-D
IS - 7
JA - IEICE TRANSACTIONS on Information
Y1 - July 1999
AB - In this paper, we propose an adaptive encoding method of fixed codebook in CELP coders and implement an adaptive fixed code-excited linear prediction (AF-CELP) speech coder as a low-bit-rate extension to the 8 kbit/s CS-ACELP. The AF-CELP can be implemented at low bit rates as well as low complexity by exploiting the fact that the fixed codebook contribution to the speech signal is periodic, as is the adaptive codebook (or pitch filter) contribution. Listening tests show that the 6.4 kbit/s AF-CELP has a comparable quality to the 8 kbit/s CS-ACELP under real environmental test conditions.
ER -