Low bit rate speech coder based on Gaussian adaptive wavelets

Shubha L. Kadambe; Pramila Srinivasan

doi:10.1117/12.205412

6 April 1995 Low bit rate speech coder based on Gaussian adaptive wavelets

Shubha L. Kadambe, Pramila Srinivasan

Proceedings Volume 2491, Wavelet Applications II; (1995) https://doi.org/10.1117/12.205412
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

A low bit rate speech coder based on Gaussian adaptive wavelets is described. This speech coder ameliorates the problem of using two different mother wavelets to model voiced and unvoiced sounds. In addition, it has been demonstrated in this paper that Gaussian adaptive wavelets are better suited to model both voiced and unvoiced sounds as compared to Morlet and Daubechies' wavelets. The bit rate and speech quality of this speech coder is compared with the speech coder based on Morlet wavelet. Experimental results using TIMIT speech database are discussed with examples.

Citation Download Citation

Shubha L. Kadambe and Pramila Srinivasan "Low bit rate speech coder based on Gaussian adaptive wavelets", Proc. SPIE 2491, Wavelet Applications II, (6 April 1995); https://doi.org/10.1117/12.205412

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