Fragile audio watermarking algorithm based on SVD and DWT

摘要

Both singular value decomposition (SVD) and discrete wavelet transform (DWT) are unitary transform, energy keep conservation after being transformed. Looking upon singular value as carry, to embed watermarking in it, signal's energy will charge when audio is attacked such as signal process or the others, so, watermarking will not be extracted exactly, the algorithm adapt to integrity detection of signal and it reality blind detection of watermarking, to extract watermarking needn't the original or watermarking. Experimental results demonstrate the algorithm is fragile and inaudibility.