Review & Exploration of Audio Watermarking using Empirical Mode of Decomposition

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In this paper we deal with the review of Audio files are capable of hiding the data , The identity of the owner of the audio file can be hidden in the audio file which is called Watermark. Watermarking is the process of embedding information into a signal (e.g. audio, video or pictures) in a way that is difficult to remove. If the signal is copied, then the information is also carried in the copy. An audio watermark is a unique electronic identifier embedded in an audio signal, typically used to identify ownership of copyright. Audio watermarking is done using Empirical Mode Decomposition (EMD) where the audio signal is divided into segments and then decomposed into different IMFs (Intrinsic Mode Functions).The watermark is then applied to the last IMF as binary bits using QIM (Quantization Index Modulation).

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