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Comparison of Prediction Based LSF Quantization Methods using Split VQ

Chatterjee, Saikat and Sreenivas, TV (2006) Comparison of Prediction Based LSF Quantization Methods using Split VQ. In: 9th International Conference on Spoken Language Processing/INTERSPEECH 2006, 2006, 2006, Pittsburgh, PA, pp. 237-240.

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Official URL: http://www.isca-speech.org/archive/interspeech_200...


Further improvement in performance, to achieve near transparent quality LSF quantization, is shown to be possible by using a higher order two dimensional (2-D) prediction in the coefficient domain. The prediction is performed in a closed-loop manner so that the LSF reconstruction error is the same as the quantization error of the prediction residual. We show that an optimum 2-D predictor, exploiting both inter-frame and intra-frame correlations, performs better than existing predictive methods. Computationally efficient split vector quantization technique is used to implement the proposed 2-D prediction based method. We show further improvement in performance by using weighted Euclidean distance.

Item Type: Conference Paper
Publisher: ISCA-International Speech Communication Association
Additional Information: Copyright for this article belongs to ISCA-International Speech Communication Association.
Keywords: LSF Quantization; Predictive Methods.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 08 Jan 2010 05:59
Last Modified: 08 Jan 2010 05:59
URI: http://eprints.iisc.ac.in/id/eprint/24234

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