关键词: 音频水印, 内容认证, 版权保护, 美尔倒谱系数

Abstract: A multipurpose watermarking scheme was proposed to provide a solution for some applications that require both copyright protection and content authentication. A robust watermark, in the form of a binary image, was first embedded in Mel-Frequency Cepstral Coefficient (MFCC). Then, the watermarked MFCC was coded to be binary string as a fragile watermark to be embedded in the DiscreteCosineTransform （DCT） domain. Blind detection was achieved for both robust and semi-fragile watermarks. The experimental results show that the proposed method is sensitive enough to detect malicious modifications and is capable of locating the regions that have undergone malicious manipulations. Besides, it is also effective to detection reliability, embedding capacity and robustness against common signal processing operations.

Key words: audio watermarking, content authentication, copyright protection, Mel Frequency Cepstrum Coefficient(MFCC)