Title :
Robust speech watermarking algorithm
Author :
Chen, N. ; Zhu, J.
Author_Institution :
Shanghai Jiaotong Univ., Shanghai
Abstract :
A zero-watermarking method based on vector quantisation (VQ) of linear prediction coefficients (LPCs) is proposed. The characteristic of natural speech that the VQ indices of LPCs among neighbouring frames tend to be very similar is utilised to generate the secret key. Simulation results demonstrate excellent imperceptibility and robustness of our algorithm.
Keywords :
linear predictive coding; speech coding; vector quantisation; watermarking; linear prediction coefficient; robust speech watermarking algorithm; secret key generation; vector quantisation; zero-watermarking method;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20072158
