Enhanced Secret Communication Using Multilevel Audio Steganography

The paper presents multilevel audio Steganography, which describes a new model for hidden communication in secret communication technology. In multilevel Steganography, at least two embedding methods are used in such a way that the second method will use the first method as a carrier. This approach has several potential benefits in hidden communication. It can be used to increase the level of security while transmitting the confidential information over public channels or internet. It can also be used to provide two or more information hiding solutions simultaneously. Another important advantage is that the lower-level embedding / extracting method and upper-level embedding / extracting method are interrelated in terms of functionality and this makes the hidden communication harder to detect. If the cover object is decoded by any adversary, he/she only obtains a decoy message or a partial message. The performance of the proposed scheme in terms of imperceptibility, capacity & security is measured through different experiments and results are included in this paper