Dither-like data hiding in multistage vector quantization of MELP and G.729 speech coding

@article{Chang2002DitherlikeDH,
  title={Dither-like data hiding in multistage vector quantization of MELP and G.729 speech coding},
  author={Pao-Chi Chang and Hsin-Min Yu},
  journal={Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002.},
  year={2002},
  volume={2},
  pages={1199-1203 vol.2}
}
We present a speech data hiding technique that utilizes the characteristics of multistage vector quantization (MSVQ) and subtractive dithering to maintain high speech reconstruction quality. The last stage of MSVQ is used to store the data to be embedded. Similar to subtractive dithering, the noise-like hidden data is subtracted from the signal at the first stage of the encoder and added back at the MSVQ decoder. As a result, the degradation caused by hiding secret data is significantly reduced… CONTINUE READING
Highly Cited
This paper has 17 citations. REVIEW CITATIONS