Abstract
In order to protect copyright,an adaptive digital audio watermarking method based on Discrete Cosine Transform(DCT) and lifting wavelet transform was proposed,which was based on computing power of lifting wavelet and the largest auditory tolerance of DC coefficients after DCT transform.Firstly,the original audio signal was decomposed into low-frequency and high frequency component after lifting wavelet transform,then DCT was performed on the low-frequency component and watermarks were embedded into the DC coefficient sequences according to the largest DC auditory tolerance after DCT coefficients transform.Meanwhile,considering the balance between the robustness and the imperceptibility of the audio watermarking,the adaptive adjustments were used for embedded watermarking.The experimental results show that the proposed method not only has low computational complexity,but also is robust to malicious replace operation and common signal attacks like noise adding and low-pass filtering.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.