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Secure data exchange is inevitable in the current era of Information Technology, for avoiding the eave-droppers. To substantiate the same, various Steganography techniques are presented in this paper to be employed with the mobile communication. Steganography deals with the skill of concealing digital information in multi-media. Audio Steganography using Low Bit encoding method, Modified Least Significant Bit (LSB) method, Alternate LSB method, Spread Spectrum method and Echo-hiding method are presented here. All the methods described above are well in existence, so a novel method of Alternate Bit Encoding is also presented with its comparison to the available methods.