Reversible Digital Watermarking of Audio Wav Signal Using Additive Interpolation-Error Expansion
Digital watermarking is the process of hiding information in a carrier signal. An audio watermarking is a kind digital watermarking over which the carrier signal is audio. Here in this paper, an advanced audio watermarking scheme called additive interpolation-error expansion technique is proposed. The paper proposes a successful method for embedding and extraction of binary bits and text in audio wav file. Reverse data hiding is the process of hiding a data which is normally called as a watermark. The extraction process should recover the original cover signal along with the watermark. The watermark may be perceptible or imperceptible in nature. For an audio signal, watermarking is typically done in order to identify ownership of copyright for that audio. The watermark should do in a way that it is difficult to remove. The watermark information is also