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  • Research Article
  • Open Access

An Efficient Objective Intelligibility Measure for Frequency Domain Scramblers

EURASIP Journal on Information Security20082007:032028

  • Received: 17 August 2007
  • Accepted: 3 December 2007
  • Published:


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.


  • Frequency Domain
  • Speech Signal
  • Objective Performance
  • Data Security
  • Intelligibility Measure


Authors’ Affiliations

Department of Electrical Engineering, Military Institute of Engineering (IME), Praça General Tibúrcio 80, Rio de Janeiro, RJ, 22290-270, Brazil
Center for Telecommunications Studies (CETUC), Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente 225, Rio de Janeiro, RJ, 22453-900, Brazil


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© A. M. C. R. Borzino et al. 2007

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.