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dc.contributor.authorBallesteros, D.M.L.
dc.contributor.authorMoreno Aróstegui, Juan Manuel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.date.accessioned2012-10-17T10:28:34Z
dc.date.created2012-08
dc.date.issued2012-08
dc.identifier.citationBallesteros, D.; Moreno, J. Highly transparent steganography model of speech signals using efficient wavelet masking. "Expert systems with applications", Agost 2012, vol. 39, núm. 10, p. 9141-9149.
dc.identifier.issn0957-4174
dc.identifier.urihttp://hdl.handle.net/2117/16737
dc.description.abstractSteganography is the process of hiding information on a host signal. Transparency is referred to the ability to avoid suspicion about the existence of a secret message. The most popular mechanisms for hiding data in audio signals are the Least Significant Bit (LSB) substitution, Frequency Masking (FM), Spread Spectrum (SS), and Shift Spectrum Algorithm (SSA). In this paper, we adapt the Frequency Masking concept using an efficient sorting of the wavelet coefficients of the secret messages and use an indirect LSB substitution for hiding speech signals into speech signals. The experimental results show that the proposed model, the Efficient Wavelet Masking (EWM) scheme, has a hiding capacity significantly higher than the Spread and Shift Spectrum Algorithms and additionally a statistical transparency higher than all of the above mentioned mechanisms. Moreover, the transparency is not dependent of the host signal chosen because the wavelet sorting guarantees the adaptation of the secret message to the host signal.
dc.format.extent9 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
dc.subject.lcshSpeech processing systems
dc.subject.otherSpeech hiding
dc.subject.otherSteganalysis
dc.subject.otherWavelet masking steganography
dc.titleHighly transparent steganography model of speech signals using efficient wavelet masking
dc.typeArticle
dc.subject.lemacProcessament de la parla
dc.contributor.groupUniversitat Politècnica de Catalunya. AHA - Arquitectures Hardware Avançades
dc.identifier.doi10.1016/j.eswa.2012.02.066
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac10331710
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorBallesteros, D.; Moreno, J.
local.citation.publicationNameExpert systems with applications
local.citation.volume39
local.citation.number10
local.citation.startingPage9141
local.citation.endingPage9149


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