A Wav-Audio Steganography Algorithm Based on Amplitude Modifying

A wav-audio steganography algorithm based on amplitude modifying is proposed. The secret audio is scrambled through a random number generator. Sampling points are grouped by every three successive ones and the amplitude values are calculated. In order to embed secret audio information, we can decide whether to modify the amplitude value of the second sampling point by comparing the amplitude values between the second sampling point and the average value of the first and the third sampling points. Embedding strength can be adjusted according to the key. Simulation results demonstrate that the hiding capacity of this algorithm is large and good invisibility can be achieved. The anti-steganalysis ability of this algorithm is good and blind extraction can be realized.