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Multipulse excitation codebook design and fast search methods for CELP speech coding

F.F. Tzeng

Open publisher page 1 citations

Abstract

Presents an efficient method for multipurpose excitation coding using direct vector quantization. This method is then extended to the design of the excitation codebook for a CELP (code excited linear predictive) coder. For the best excitation-vector search at low data rates, an approach combining direct vector quantization and an analysis-by-synthesis procedure is used. Computer simulation results for a 4.8 kb/s speech coder based on the new excitation codebook are presented.>

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What this paper is about

Presents an efficient method for multipurpose excitation coding using direct vector quantization. This method is then extended to the design of the excitation codebook for a CELP (code excited linear predictive) coder. For the best excitation-vector search at low data rates, an approach combining direct vector quantization and an analysis-by-synthesis procedure is used. Computer simulation results for a 4.8 kb/s speech coder based on the new excitation codebook are presented.>

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Available abstract

Presents an efficient method for multipurpose excitation coding using direct vector quantization. This method is then extended to the design of the excitation codebook for a CELP (code excited linear predictive) coder. For the best excitation-vector search at low data rates, an approach combining direct vector quantization and an analysis-by-synthesis procedure is used. Computer simulation results for a 4.8 kb/s speech coder based on the new excitation codebook are presented.>

Key concepts: Codebook, Code-excited linear prediction, Linde–Buzo–Gray algorithm, Vector quantization, Vector sum excited linear prediction, Linear predictive coding, Speech coding, Computer science

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