An Efficient Objective Intelligibility Measure for Frequency Domain Scramblers
© A. M. C. R. Borzino et al. 2007
Received: 17 August 2007
Accepted: 3 December 2007
Published: 24 January 2008
An objective performance measure is proposed to evaluate the intelligibility of a speech signal having its frequency subbands permuted. The proposed tool can be used to generate efficient keys for frequency domain scramblers as well as to assess the results of cryptanalysis.
- Jayant NS: On the effective number of keys in a voice, privacy system based on permutation scrambling. AT&T Technical Journal 1987, 66(1):192-196.View ArticleGoogle Scholar
- Sridharan S, Dawson E, Goldburg B: Fast Fourier transform based speech encryption system. IEE Proceedings I 1991, 138(3):215-223.Google Scholar
- Beker HJ, Piper FC: Secure Speech Communications. Academic Press, Boston, Mass, USA; 1985.Google Scholar
- Klatt D: Prediction of perceived phonetic distance from critical-band spectra: a first step. Proceedings of the IEEE International Conference on Acoustics, Speech ,and Signal Processing (ICASSP '82), May 1982, Paris, France 7: 1278-1281.View ArticleGoogle Scholar
This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.