Harmonic Vector Excitation Coding Of Speech At 2.0-4.0 Kbps

A low rate speech coding algorithm, Harmonic Vector Excitation Coding (HVXC) [ 13 is proposed for MPEG-4 standardization, in which combination of weighted vector quantization of harmonic spectral envelope of LPC residual signal for voiced segments [2] and vector excitation coding (VXC) for unvoiced...

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Bibliographic Details
Main Authors: Nishiguchi, Iijima, Inoue, Maeda, Matsumoto
Format: Conference Proceeding
Language:English
Subjects:
Decoding
Harmonic analysis
Indexes
Power harmonic filters
Speech coding
Transform coding
Vector quantization
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Summary:A low rate speech coding algorithm, Harmonic Vector Excitation Coding (HVXC) [ 13 is proposed for MPEG-4 standardization, in which combination of weighted vector quantization of harmonic spectral envelope of LPC residual signal for voiced segments [2] and vector excitation coding (VXC) for unvoiced segments are employed for 2.0 and 4.0 kbps coding. New features of the proposed coder includes a quantizer scheme capable of generating 2.0 and 4.0kbps scalable bit-streams, where 2.0 kbps decoding is possible using a subset of 4.0kbps bit-stream.
ISSN:0098-3063
1558-4127
DOI:10.1109/ICCE.1998.678319