Multiband Vector Quantization Based on Inner Product for Wideband Speech Coding

Joon-Hyuk CHANG; Sanjit K. MITRA

doi:10.1093/ietisy/e88-d.11.2606

Multiband Vector Quantization Based on Inner Product for Wideband Speech Coding

Joon-Hyuk CHANG, Sanjit K. MITRA

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This paper describes a multiband vector quantization (VQ) technique based on inner product for wideband speech coding at 16 kb/s. Our approach consists of splitting the input speech into two separate bands and then applying an independent coding scheme for each band. A code excited linear prediction (CELP) coder is used in the lower band while a transform based coding strategy is applied in the higher band. The spectral components in the higher frequency band are represented by a set of modulated lapped transform (MLT) coefficients. The higher frequency band is divided into three subbands, and the MLT coefficients construct a vector for each subband. Specifically, for the VQ of these vectors, an inner product-based distance measure is proposed as a new strategy. The proposed 16 kb/s coder with the inner-product based distortion measure achieves better performance than the 48 kb/s ITU-T G.722 in subjective quality tests.

Publication: IEICE TRANSACTIONS on Information Vol.E88-D No.11 pp.2606-2608

Publication Date: 2005/11/01

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DOI: 10.1093/ietisy/e88-d.11.2606

Type of Manuscript: LETTER

Category: Speech and Hearing

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Joon-Hyuk CHANG, Sanjit K. MITRA, "Multiband Vector Quantization Based on Inner Product for Wideband Speech Coding" in IEICE TRANSACTIONS on Information, vol. E88-D, no. 11, pp. 2606-2608, November 2005, doi: 10.1093/ietisy/e88-d.11.2606.
Abstract: This paper describes a multiband vector quantization (VQ) technique based on inner product for wideband speech coding at 16 kb/s. Our approach consists of splitting the input speech into two separate bands and then applying an independent coding scheme for each band. A code excited linear prediction (CELP) coder is used in the lower band while a transform based coding strategy is applied in the higher band. The spectral components in the higher frequency band are represented by a set of modulated lapped transform (MLT) coefficients. The higher frequency band is divided into three subbands, and the MLT coefficients construct a vector for each subband. Specifically, for the VQ of these vectors, an inner product-based distance measure is proposed as a new strategy. The proposed 16 kb/s coder with the inner-product based distortion measure achieves better performance than the 48 kb/s ITU-T G.722 in subjective quality tests.
URL: https://globals.ieice.org/en_transactions/information/10.1093/ietisy/e88-d.11.2606/_p

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@ARTICLE{e88-d_11_2606,
author={Joon-Hyuk CHANG, Sanjit K. MITRA, },
journal={IEICE TRANSACTIONS on Information},
title={Multiband Vector Quantization Based on Inner Product for Wideband Speech Coding},
year={2005},
volume={E88-D},
number={11},
pages={2606-2608},
abstract={This paper describes a multiband vector quantization (VQ) technique based on inner product for wideband speech coding at 16 kb/s. Our approach consists of splitting the input speech into two separate bands and then applying an independent coding scheme for each band. A code excited linear prediction (CELP) coder is used in the lower band while a transform based coding strategy is applied in the higher band. The spectral components in the higher frequency band are represented by a set of modulated lapped transform (MLT) coefficients. The higher frequency band is divided into three subbands, and the MLT coefficients construct a vector for each subband. Specifically, for the VQ of these vectors, an inner product-based distance measure is proposed as a new strategy. The proposed 16 kb/s coder with the inner-product based distortion measure achieves better performance than the 48 kb/s ITU-T G.722 in subjective quality tests.},
keywords={},
doi={10.1093/ietisy/e88-d.11.2606},
ISSN={},
month={November},}

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TY - JOUR
TI - Multiband Vector Quantization Based on Inner Product for Wideband Speech Coding
T2 - IEICE TRANSACTIONS on Information
SP - 2606
EP - 2608
AU - Joon-Hyuk CHANG
AU - Sanjit K. MITRA
PY - 2005
DO - 10.1093/ietisy/e88-d.11.2606
JO - IEICE TRANSACTIONS on Information
SN -
VL - E88-D
IS - 11
JA - IEICE TRANSACTIONS on Information
Y1 - November 2005
AB - This paper describes a multiband vector quantization (VQ) technique based on inner product for wideband speech coding at 16 kb/s. Our approach consists of splitting the input speech into two separate bands and then applying an independent coding scheme for each band. A code excited linear prediction (CELP) coder is used in the lower band while a transform based coding strategy is applied in the higher band. The spectral components in the higher frequency band are represented by a set of modulated lapped transform (MLT) coefficients. The higher frequency band is divided into three subbands, and the MLT coefficients construct a vector for each subband. Specifically, for the VQ of these vectors, an inner product-based distance measure is proposed as a new strategy. The proposed 16 kb/s coder with the inner-product based distortion measure achieves better performance than the 48 kb/s ITU-T G.722 in subjective quality tests.
ER -