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- W84185392 abstract "Bdward-adaptive linear prediction has been successfully used in medium rate speech codem with high quality and low delay(1e.w than 2 rn) at 16 kb/s. The prediction gain of a forward-adaptive format predictor cascaded with a backward-adaptive format predictor har been fint studied. We have found that if the analysis frame length of the backward predictor is larger than the pitch period, the backward prediction gain can reach that of a non-linear predictor or a cascaded forward format predictor. Results for several speech segments of male and female speaken, with different analysis window lengths, have been given and compared. The proposed cascaded adaptive filter configuration, the first forward-adaptive aynth-izer followed by second backwardadaptive synthesizer, har been incorporated into a 3 kb/s Single-Pulse Excitation/ Code-Excited Linear Prediction (SPEICELP) coder to improve the speech quality while maintaining almost the same bit-rats. Experimental results for the proposed SPE/CELP coder with backward adaptation show that the improvements of the segment SNR for voiced speech segments of several testing sentences can reach to 1.02-2.06 dB." @default.
- W84185392 created "2016-06-24" @default.
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- W84185392 date "2004-01-01" @default.
- W84185392 modified "2023-09-24" @default.
- W84185392 title "BACKWARD ADAPTATION FOR SINGLE-PULSE EXCITATION CODER" @default.
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- W84185392 hasPublicationYear "2004" @default.
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