Title :
Audio watermarking in DCT: Embedding strategy and algorithm
Author :
Zeng, Gaorong ; Qiu, Zhengding
Author_Institution :
Inst. of Inf. Sci., Beijing Jiaotong Univ., Beijing
Abstract :
The position of watermarking plays an important role when the tradeoff between robustness and inaudibility is considered. In the paper we analyze the mathematical relationship between the embeddable position and the noise of the audio watermarking in the DCT (discrete cosine transform) domain. We consider DC (direct current) coefficient to tradeoff robustness and inaudibility. And a blind watermarking scheme is implemented through quantization index modulation (QIM) technology. Experimental results show watermarking is robust to common signal processing operation and mp3 compressing, and inaudibility is satisfaction.
Keywords :
audio coding; data compression; discrete cosine transforms; modulation; quantisation (signal); watermarking; DCT; audio watermarking noise; blind watermarking scheme; data embedding strategy; discrete cosine transform; inaudibility constraint; mathematical relationship; mp3 compression; quantization index modulation technology; signal processing operation; Acoustic noise; Discrete cosine transforms; Distortion measurement; Frequency; Low-frequency noise; Noise robustness; PSNR; Signal processing algorithms; Signal to noise ratio; Watermarking;
Conference_Titel :
Signal Processing, 2008. ICSP 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2178-7
Electronic_ISBN :
978-1-4244-2179-4
DOI :
10.1109/ICOSP.2008.4697583
