Automatic Speech Recognition for VoIP with Packet Loss Concealment

Bakri, Adil; Amrouche, Abderrahmane; Abbas, Mourad; Bouchakour, Lallouani

doi:10.1016/j.procs.2018.03.010

Cited by 2 publications

(1 citation statement)

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“…On the one hand, according to the characteristics of SWPC coding, the compressed IP speech data bitstream is grouped, and the secret messages is grouped according to the carrier length, and the secret information is embedded by embedding algorithm, so the loss of any secret speech packet [29] will not affect other packets. For real-time transmission through IP network channels and the receiver to receive packets, only according to sending the original serial processing time sequence in turn, use extraction algorithm in time to carry secret hidden information extracted in VoIP packets, grouping and embedding secret messages almost at the same time, to achieve the purpose of reduced latency and packet loss.On the other hand, this paper designs a method to determine whether each IP voice packet can be embedded and extracted independently, which is more suitable to deal with the problem that VoIP communication synchronization can extract and restore secret information.…”

Section: Synchronization Mechanismmentioning

confidence: 99%

An Enhanced Steganographic Code and its Application in Voice-Over-IP Steganography

Zhang

Rasheed

et al. 2019

IEEE Access

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Voice-over IP (VoIP) technology is a kind of digital transmission technology based on IP network. It is one of the important methods to use voice service in VoIP as steganographic carrier to ensure secure transmission. However, the traditional steganographic code has some problems, such as low embedding efficiency and weak concealment, which cannot meet the requirements of VoIP streaming media information hiding for the security of secret information. Therefore, a steganographic algorithm combining F5 and simplified wet paper code (SWPC) algorithm is proposed. The main idea is to embed secret messages in each row of the carrier matrix using the F5 algorithm, and then the SWPC algorithm is used to embed the columns according to the wet and dry characteristics of the wet paper code without affecting the results before row embedding. We use the VoIP streams encoded by the ITU-T G.729a codec as a carrier to verify the proposed scheme. The experimental results demonstrate that the proposed scheme can achieve relatively better IP speech data steganographic transparency and that it can outperform F5-WPC and SWPC approaches.

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Section: Synchronization Mechanismmentioning

confidence: 99%