Pitch predictive vector quantisation of speech waveform |
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Authors: | Lowry A. Hossain S.Q.A.M.A. |
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Affiliation: | Dept. of Electr. & Electron. Eng., Queen's Univ. of Belfast, UK; |
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Abstract: | A coding algorithm is presented which combines pitch prediction with low-dimensional vector quantisation to exploit both long- and short-term correlation in the speech waveform at rates of 16 and 9.6 kbit/s. Vector quantisation of the predictor enables the stability of the synthesis filter to be assured, and also allows the use of a minimum residual energy criterion. SNRs of 17-19 dB are achieved at 16 kbit/s and 13-15 dB at 9.6 kbit/s.<> |
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