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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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