Enhanced waveform interpolative coding at low bit-rate.

This paper presents a high quality enhanced waveform interpolative (EWI) speech coder at low bit-rate. The system incorporates novel features such as optimization of the slowly evolving waveform (SEW) for interpolation, analysis-by-synthesis (AbS) vector quantization (VQ) of the SEW dispersion phase...

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Publié dans:	IEEE Transactions on speech and audio processing 9, 8 (2001).
Auteur principal:	Gottesman, O.
Format:	Article
Langue:	English
Sujets:	2.8 kbit/s. EWI speech coder. REW magnitude. REW parameter. SEW dispersion phase. VQ. Analysis-by-synthesis vector quantization. Dual-predictive AbS quantization. Enhanced waveform interpolative coding. Interpolation. Low bit-rate coding. Optimization. Parameterization. Pitch search. Rapidly-evolving waveform magnitude. Slowly evolving waveform. Switched-predictive analysis-by-synthesis gain VQ.