Skip to main content
  • Research Article
  • Open access
  • Published:

An Efficient Objective Intelligibility Measure for Frequency Domain Scramblers

Abstract

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.

[1234]

References

  1. 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.

    Article  Google Scholar 

  2. Sridharan S, Dawson E, Goldburg B: Fast Fourier transform based speech encryption system. IEE Proceedings I 1991, 138(3):215-223.

    Google Scholar 

  3. Beker HJ, Piper FC: Secure Speech Communications. Academic Press, Boston, Mass, USA; 1985.

    Google Scholar 

  4. 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.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding authors

Correspondence to AMCR Borzino or JA Apolinário Jr..

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and permissions

About this article

Cite this article

Borzino, A., Apolinário, J. & da Silva, D. An Efficient Objective Intelligibility Measure for Frequency Domain Scramblers. EURASIP J. on Info. Security 2007, 032028 (2008). https://doi.org/10.1155/2007/32028

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1155/2007/32028

Keywords