Improved Performance of DSBC Speech Coder by Subband Weighting and Modified Bit Allocation
Summary :
In this paper, two methods for improving the performance of DSBC (Dynamic bit allocation Sub-Band Coder) are proposed. One is to modify the bit allocation algorithm since conventional dynamic bit allocation algorithm is computationally heavy, while the other one is to weight the subband to reduce hissing noise. Instead of inserting the Gaussian noise in regeneration of empty band, the subband weighting method is to utilize shaped subband signal as empty band signal. The simulation result shows that computational complexity is reduced about 10%, and perceptual hissing noise is suppressed noticeably.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E74-A No.10 pp.3029-3033
- Publication Date
- 1991/10/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section PAPER (Special Issue on JTC-CSCC '90)
- Category
- Speech and Image Processing
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Sun Young KIM, Young Sik KIM, Jae Kong KIM, "Improved Performance of DSBC Speech Coder by Subband Weighting and Modified Bit Allocation" in IEICE TRANSACTIONS on Fundamentals,
vol. E74-A, no. 10, pp. 3029-3033, October 1991, doi: .
Abstract: In this paper, two methods for improving the performance of DSBC (Dynamic bit allocation Sub-Band Coder) are proposed. One is to modify the bit allocation algorithm since conventional dynamic bit allocation algorithm is computationally heavy, while the other one is to weight the subband to reduce hissing noise. Instead of inserting the Gaussian noise in regeneration of empty band, the subband weighting method is to utilize shaped subband signal as empty band signal. The simulation result shows that computational complexity is reduced about 10%, and perceptual hissing noise is suppressed noticeably.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e74-a_10_3029/_p
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@ARTICLE{e74-a_10_3029,
author={Sun Young KIM, Young Sik KIM, Jae Kong KIM, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Improved Performance of DSBC Speech Coder by Subband Weighting and Modified Bit Allocation},
year={1991},
volume={E74-A},
number={10},
pages={3029-3033},
abstract={In this paper, two methods for improving the performance of DSBC (Dynamic bit allocation Sub-Band Coder) are proposed. One is to modify the bit allocation algorithm since conventional dynamic bit allocation algorithm is computationally heavy, while the other one is to weight the subband to reduce hissing noise. Instead of inserting the Gaussian noise in regeneration of empty band, the subband weighting method is to utilize shaped subband signal as empty band signal. The simulation result shows that computational complexity is reduced about 10%, and perceptual hissing noise is suppressed noticeably.},
keywords={},
doi={},
ISSN={},
month={October},}
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TY - JOUR
TI - Improved Performance of DSBC Speech Coder by Subband Weighting and Modified Bit Allocation
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 3029
EP - 3033
AU - Sun Young KIM
AU - Young Sik KIM
AU - Jae Kong KIM
PY - 1991
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E74-A
IS - 10
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - October 1991
AB - In this paper, two methods for improving the performance of DSBC (Dynamic bit allocation Sub-Band Coder) are proposed. One is to modify the bit allocation algorithm since conventional dynamic bit allocation algorithm is computationally heavy, while the other one is to weight the subband to reduce hissing noise. Instead of inserting the Gaussian noise in regeneration of empty band, the subband weighting method is to utilize shaped subband signal as empty band signal. The simulation result shows that computational complexity is reduced about 10%, and perceptual hissing noise is suppressed noticeably.
ER -
English
