Real-time, speech-in-speech hiding scheme based on least significant bit substitution and adaptive key
| Autor: | Dora M. Ballesteros L, Juan M. Moreno A |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica, Universitat Politècnica de Catalunya. AHA - Arquitectures Hardware Avançades |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Voice activity detection
General Computer Science Steganography Speech communication Computer science Speech recognition Speech coding Latency (audio) Automatic speech recognition Reconeixement automàtic de la parla Speech processing Linear predictive coding Audition Control and Systems Engineering Information hiding Key (cryptography) Speech transmission Speech Enginyeria de la telecomunicació::Processament del senyal::Processament de la parla i del senyal acústic [Àrees temàtiques de la UPC] Electrical and Electronic Engineering |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya instname |
| DOI: | 10.1016/j.compeleceng.2013.02.006 |
| Popis: | Real-time, embedded speech-in-speech hiding has not been widely researched. Nevertheless, it could be useful, among other cases, in secure mobile telephony. In this paper, we propose a new scheme of data hiding which takes advantage of the masking property of the Human Auditory System (HAS) to hide a secret (speech) signal into a host (speech) signal. The embedding process is carried out into the wavelet coefficients of the speech signals. The main point of the proposed scheme is that the embedding process is suitable for real-time processing, and the secret’s coefficients are relocated by an adaptive key, instead of a pseudo-noise sequence of some approaches. The latency of the embedding module makes this approach useful for real-time speech communication because the total delay added by the proposed system is low compared to the highest delay allowed for a high quality speech transmission. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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