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. 2013 Feb 18;13(2):2530–2551. doi: 10.3390/s130202530

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© 2013 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 12. — Performance based on the different DCT dimension compression degree with frame length of 256 ms, frame shift of 64 ms, N of 20, r of 0.2, VQ-32 and Hamming window.