An Enhanced Distortion Measure Based VBR for Waveform Interpolative Speech Coders

Heesik YANG; Sangbae JEONG; Minsoo HAHN

doi:10.1093/ietfec/e91-a.4.1222

An Enhanced Distortion Measure Based VBR for Waveform Interpolative Speech Coders

Heesik YANG, Sangbae JEONG, Minsoo HAHN

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In our previous study, a distortion measure based variable bit rate (DM-VBR) scheme in waveform interpolation (WI) coders was proposed. In this paper, the repetition method is proposed to estimate non-transmitted parameters instead of the extrapolation method. For the further reduction of slowly evolving waveform (SEW) bit rates, the dimensions of the past parameters, which are different from those of the current parameters, are converted to match the dimension of the current ones. Distortions between interpolated sub-frames and original sub-frames are measured for the reduction of the SEW parameters. And the usefulness of several other distortion measures is also investigated instead of the simple log spectral distortion. Experimental results show that the coder adopting the new schemes offers above 41% bit rate reduction with almost unnoticeable output speech degradation.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E91-A No.4 pp.1222-1225

Publication Date: 2008/04/01

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Online ISSN: 1745-1337

DOI: 10.1093/ietfec/e91-a.4.1222

Type of Manuscript: LETTER

Category: Speech and Hearing

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Heesik YANG, Sangbae JEONG, Minsoo HAHN, "An Enhanced Distortion Measure Based VBR for Waveform Interpolative Speech Coders" in IEICE TRANSACTIONS on Fundamentals, vol. E91-A, no. 4, pp. 1222-1225, April 2008, doi: 10.1093/ietfec/e91-a.4.1222.
Abstract: In our previous study, a distortion measure based variable bit rate (DM-VBR) scheme in waveform interpolation (WI) coders was proposed. In this paper, the repetition method is proposed to estimate non-transmitted parameters instead of the extrapolation method. For the further reduction of slowly evolving waveform (SEW) bit rates, the dimensions of the past parameters, which are different from those of the current parameters, are converted to match the dimension of the current ones. Distortions between interpolated sub-frames and original sub-frames are measured for the reduction of the SEW parameters. And the usefulness of several other distortion measures is also investigated instead of the simple log spectral distortion. Experimental results show that the coder adopting the new schemes offers above 41% bit rate reduction with almost unnoticeable output speech degradation.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e91-a.4.1222/_p

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@ARTICLE{e91-a_4_1222,
author={Heesik YANG, Sangbae JEONG, Minsoo HAHN, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={An Enhanced Distortion Measure Based VBR for Waveform Interpolative Speech Coders},
year={2008},
volume={E91-A},
number={4},
pages={1222-1225},
abstract={In our previous study, a distortion measure based variable bit rate (DM-VBR) scheme in waveform interpolation (WI) coders was proposed. In this paper, the repetition method is proposed to estimate non-transmitted parameters instead of the extrapolation method. For the further reduction of slowly evolving waveform (SEW) bit rates, the dimensions of the past parameters, which are different from those of the current parameters, are converted to match the dimension of the current ones. Distortions between interpolated sub-frames and original sub-frames are measured for the reduction of the SEW parameters. And the usefulness of several other distortion measures is also investigated instead of the simple log spectral distortion. Experimental results show that the coder adopting the new schemes offers above 41% bit rate reduction with almost unnoticeable output speech degradation.},
keywords={},
doi={10.1093/ietfec/e91-a.4.1222},
ISSN={1745-1337},
month={April},}

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TY - JOUR
TI - An Enhanced Distortion Measure Based VBR for Waveform Interpolative Speech Coders
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1222
EP - 1225
AU - Heesik YANG
AU - Sangbae JEONG
AU - Minsoo HAHN
PY - 2008
DO - 10.1093/ietfec/e91-a.4.1222
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E91-A
IS - 4
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - April 2008
AB - In our previous study, a distortion measure based variable bit rate (DM-VBR) scheme in waveform interpolation (WI) coders was proposed. In this paper, the repetition method is proposed to estimate non-transmitted parameters instead of the extrapolation method. For the further reduction of slowly evolving waveform (SEW) bit rates, the dimensions of the past parameters, which are different from those of the current parameters, are converted to match the dimension of the current ones. Distortions between interpolated sub-frames and original sub-frames are measured for the reduction of the SEW parameters. And the usefulness of several other distortion measures is also investigated instead of the simple log spectral distortion. Experimental results show that the coder adopting the new schemes offers above 41% bit rate reduction with almost unnoticeable output speech degradation.
ER -