Efficient Encoding of Excitation Codes Using Trained Partial Algebraic Codebook
Summary :
An efficient encoding method of excitation codes using a partial algebraic codebook (PAC) is proposed. Since the conventional algebraic code excited linear prediction (ACELP) encodes the positions and signs of all excitation pulses separately, the bits required for encoding excitation codes take a large portion of the total bit rate. Vector quantization (VQ) of the positions and signs of the excitation pulses results in a PAC. Using PAC instead of the full set of algebraic codes, we can reduce the bits required to encode the excitation codes while maintaining the output speech quality. An iterative training algorithm is proposed to obtain the suboptimal PAC by modifying the Lloyd algorithm. Simulation results show that considerable bit savings can be obtained with only a small amount of degradation in the segmental signal to noise ratio (SEGSNR).
- Publication
- IEICE TRANSACTIONS on Information Vol.E81-D No.6 pp.612-615
- Publication Date
- 1998/06/25
- Publicized
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- Type of Manuscript
- Category
- Speech Processing and Acoustics
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Yun Keun LEE, Hwang Soo LEE, Robert M. GRAY, "Efficient Encoding of Excitation Codes Using Trained Partial Algebraic Codebook" in IEICE TRANSACTIONS on Information,
vol. E81-D, no. 6, pp. 612-615, June 1998, doi: .
Abstract: An efficient encoding method of excitation codes using a partial algebraic codebook (PAC) is proposed. Since the conventional algebraic code excited linear prediction (ACELP) encodes the positions and signs of all excitation pulses separately, the bits required for encoding excitation codes take a large portion of the total bit rate. Vector quantization (VQ) of the positions and signs of the excitation pulses results in a PAC. Using PAC instead of the full set of algebraic codes, we can reduce the bits required to encode the excitation codes while maintaining the output speech quality. An iterative training algorithm is proposed to obtain the suboptimal PAC by modifying the Lloyd algorithm. Simulation results show that considerable bit savings can be obtained with only a small amount of degradation in the segmental signal to noise ratio (SEGSNR).
URL: https://global.ieice.org/en_transactions/information/10.1587/e81-d_6_612/_p
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@ARTICLE{e81-d_6_612,
author={Yun Keun LEE, Hwang Soo LEE, Robert M. GRAY, },
journal={IEICE TRANSACTIONS on Information},
title={Efficient Encoding of Excitation Codes Using Trained Partial Algebraic Codebook},
year={1998},
volume={E81-D},
number={6},
pages={612-615},
abstract={An efficient encoding method of excitation codes using a partial algebraic codebook (PAC) is proposed. Since the conventional algebraic code excited linear prediction (ACELP) encodes the positions and signs of all excitation pulses separately, the bits required for encoding excitation codes take a large portion of the total bit rate. Vector quantization (VQ) of the positions and signs of the excitation pulses results in a PAC. Using PAC instead of the full set of algebraic codes, we can reduce the bits required to encode the excitation codes while maintaining the output speech quality. An iterative training algorithm is proposed to obtain the suboptimal PAC by modifying the Lloyd algorithm. Simulation results show that considerable bit savings can be obtained with only a small amount of degradation in the segmental signal to noise ratio (SEGSNR).},
keywords={},
doi={},
ISSN={},
month={June},}
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TY - JOUR
TI - Efficient Encoding of Excitation Codes Using Trained Partial Algebraic Codebook
T2 - IEICE TRANSACTIONS on Information
SP - 612
EP - 615
AU - Yun Keun LEE
AU - Hwang Soo LEE
AU - Robert M. GRAY
PY - 1998
DO -
JO - IEICE TRANSACTIONS on Information
SN -
VL - E81-D
IS - 6
JA - IEICE TRANSACTIONS on Information
Y1 - June 1998
AB - An efficient encoding method of excitation codes using a partial algebraic codebook (PAC) is proposed. Since the conventional algebraic code excited linear prediction (ACELP) encodes the positions and signs of all excitation pulses separately, the bits required for encoding excitation codes take a large portion of the total bit rate. Vector quantization (VQ) of the positions and signs of the excitation pulses results in a PAC. Using PAC instead of the full set of algebraic codes, we can reduce the bits required to encode the excitation codes while maintaining the output speech quality. An iterative training algorithm is proposed to obtain the suboptimal PAC by modifying the Lloyd algorithm. Simulation results show that considerable bit savings can be obtained with only a small amount of degradation in the segmental signal to noise ratio (SEGSNR).
ER -
English
