New adaptive capacity of audio steganography based on the wavelet transform

In this article, we took the wavelet packet decomposition method to resolve the audio signals. Then grouped the sub-bands and selected the appropriate groups to be audio carriers according to the marginal bands distortion sensitivity of the packets. We calculated the volume of embedded, selected steganographic position automatically and uniformly according to the sizes of the hidden information and audio carriers. Finally, we improved the encoding algorithm of F5 to embed the information. Experimental results show that the method of high capacity, good imperceptibility, and the computational complexity is low.