Title :
A new speech scrambling concept based on Hadamard matrices
Author :
V. Senk;V.D. Delic;V.S. Milosevic
Author_Institution :
Fac. of Tech. Sci., Novi Sad Univ., Serbia
Abstract :
The principles of a new speech scrambling concept are presented, whereby the speech components are linearly combined in contrast to their conventional permutation. A computationally and cryptographically efficient solution based on Hadamard matrices is proposed and its advantages shown. The idea is general and easily applies to all existing speech scramblers providing for both lower residual intelligibility and greater cryptanalytic efforts, maintaining the bandwidth and the speech quality.
Keywords :
"Error correction","Error correction codes","Speech analysis","Cryptography","Bandwidth","Frequency","Delay","Security","Vectors","Military communication"
Journal_Title :
IEEE Signal Processing Letters
