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- Chatterjee, Saikat, et al.
(författare)
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Analysis of conditional PDF based split VQ
- 2007
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Ingår i: IEEE Signal Processing Letters. - 1070-9908 .- 1558-2361. ; 14:11, s. 781-784
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Tidskriftsartikel (refereegranskat)
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- Chatterjee, Saikat, et al.
(författare)
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Joint inter-frame and intra-frame predictive coding of LSF parameters
- 2007
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Ingår i: 2007 9TH INTERNATIONAL SYMPOSIUM ON SIGNAL PROCESSING AND ITS APPLICATIONS, VOLS 1-3.
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Konferensbidrag (refereegranskat)abstract
- We explore the performance of two dimensional (2-D) prediction based LSF quantization method for both wide-band and telephone-band (narrow-band) speech. The 2-D prediction based method exploits both the inter-frame and intra-frame correlations of LSF parameters. We show that a 4th order 2-D predictor provides optimum prediction gain as well as improved quantization performance at various choices of frame shift for both wide-band and telephone-band speech. Existing one dimensional (1-D) predictive method, exploiting only inter-frame correlation, results in poor performance at larger frame shifts; whereas proposed 2-D predictor provides lower spectral distortion as well as lower number of outliers compared to existing memory-based and memory-less methods.
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