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Frequency Speech Scrambler based on Hartley Transform and OFDM Algorithm

by Anjana D S, Minu Kuriakose
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 61 - Number 8
Year of Publication: 2013
Authors: Anjana D S, Minu Kuriakose
10.5120/9952-4599

Anjana D S, Minu Kuriakose . Frequency Speech Scrambler based on Hartley Transform and OFDM Algorithm. International Journal of Computer Applications. 61, 8 ( January 2013), 36-40. DOI=10.5120/9952-4599

@article{ 10.5120/9952-4599,
author = { Anjana D S, Minu Kuriakose },
title = { Frequency Speech Scrambler based on Hartley Transform and OFDM Algorithm },
journal = { International Journal of Computer Applications },
issue_date = { January 2013 },
volume = { 61 },
number = { 8 },
month = { January },
year = { 2013 },
issn = { 0975-8887 },
pages = { 36-40 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume61/number8/9952-4599/ },
doi = { 10.5120/9952-4599 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T21:08:37.047578+05:30
%A Anjana D S
%A Minu Kuriakose
%T Frequency Speech Scrambler based on Hartley Transform and OFDM Algorithm
%J International Journal of Computer Applications
%@ 0975-8887
%V 61
%N 8
%P 36-40
%D 2013
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Speech scramblers are considered for communication applications where secured speech signal transmissions are important requirement. This paper proposes a frequency voice scrambler with much less residual intelligibility, simulated in Matlab. In this, two techniques, Fast Hartley Transform (FHT) and Orthogonal Frequency Division Multiplexing (OFDM) scrambling key generation scheme are combined together, which can provide scrambled speech by permuting frequency components. Thus the voice cryptographic system is based on an OFDM scrambled discrete Hartley Transform.

References
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Index Terms

Computer Science
Information Sciences

Keywords

Fast Hartley Transform (FHT) OFDM scrambling key generation algorithm encoder decoder

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