Influence of speech codecs selection on transcoding steganography
نویسندگان
چکیده
منابع مشابه
Influence of Speech Codecs Selection on Transcoding Steganography
The typical approach to steganography is to compress the covert data in order to limit its size, which is reasonable in the context of a limited steganographic bandwidth. TranSteg (Trancoding Steganography) is a new IP telephony steganographic method that was recently proposed that offers high steganographic bandwidth while retaining good voice quality. In TranSteg, compression of the overt dat...
متن کاملSteganalysis of Transcoding Steganography
Transcoding steganography (TranSteg) is a fairly new IP telephony steganographic method that functions by compressing overt (voice) data to make space for the steganogram by means of transcoding. It offers high steganographic bandwidth, retains good voice quality, and is generally harder to detect than other existing VoIP steganographic methods. In TranSteg, after the steganogram reaches the re...
متن کاملOn the undetectability of transcoding steganography
Transcoding Steganography (TranSteg) is a fairly new IP telephony steganographic method that is characterized by a high steganographic bandwidth, low introduced distortions, and high undetectability. TranSteg utilizes compression of the overt data to free space for the secret data bits. In this paper, we focus on evaluating different possibilities for TranSteg detection. Building on the previou...
متن کاملAn Efficient Transcoding Scheme for G.729 and G.723.1 Speech Codecs: Interoperability over the Internet
This paper proposes an efficient conversion algorithm for G.729 and G.723.1 speech codecs to reduce computational complexity of the communications between the G.729 and G.723.1 speech codecs. The proposed transcoding method incorporates four processes: line spectral pair (LSP) interpolation, pitch conversion, fast adaptive-codebook search, and fast fixed-codebook search. To reduce search comput...
متن کاملA novel transcoding algorithm for AMR and EVRC speech codecs via direct parameter transformation
In this paper, a novel transcoding algorithm for the Adaptive Multi Rate (AMR) codec and the Enhanced Variable Rate Codec (EVRC) is proposed. In contrast to the conventional tandem transcoding algorithm, the proposed algorithm transcodes the parameters of one codec to the other without synthesizing the speech. The proposed algorithm decodes the parameters of source codec from the input bitstrea...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Telecommunication Systems
سال: 2014
ISSN: 1018-4864,1572-9451
DOI: 10.1007/s11235-014-9937-9