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An 8 kb/s low-delay CELP speech coder

J.-H. Chen, Martin S. Rauchwerk

Open publisher page 15 citations

Abstract

A novel 8-kb/s low-delay code-excited linear prediction (CELP) coder is proposed. The main features of this coder are the backward-adaptive LPC predictor and excitation gain, and the three-tap pitch predictor with interframe predictively coded pitch period and closed-loop vector quantized predictor taps. The authors have found a new way of CELP speech coding at or below 8 kb/s which, when compared with conventional CELP at a comparable bit rate, achieves about the same speech quality with about the same complexity but a much lower coding delay.>

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What this paper is about

A novel 8-kb/s low-delay code-excited linear prediction (CELP) coder is proposed. The main features of this coder are the backward-adaptive LPC predictor and excitation gain, and the three-tap pitch predictor with interframe predictively coded pitch period and closed-loop vector quantized predictor taps. The authors have found a new way of CELP speech coding at or below 8 kb/s which, when compared with conventional CELP at a comparable bit rate, achieves about the same speech quality with about the same complexity but a much lower coding delay.>

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OpenAlex reports 15 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

A novel 8-kb/s low-delay code-excited linear prediction (CELP) coder is proposed. The main features of this coder are the backward-adaptive LPC predictor and excitation gain, and the three-tap pitch predictor with interframe predictively coded pitch period and closed-loop vector quantized predictor taps. The authors have found a new way of CELP speech coding at or below 8 kb/s which, when compared with conventional CELP at a comparable bit rate, achieves about the same speech quality with about the same complexity but a much lower coding delay.>

Key concepts: Code-excited linear prediction, Vector sum excited linear prediction, Speech coding, Speech recognition, Linear predictive coding, Harmonic Vector Excitation Coding, Computer science, Coding (social sciences)

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