Data security is one of the most significant aspects to be deliberated when some specific secret data has to be interconnected amongst two different parties. Steganography and cryptography are the two methods utilized for this reason. In cryptography, they scrambles the secret data, however it discloses the actuality of the specific data. In steganography, it hides the authentic existence of the specific data so that anybody else other than the sender as well as the recipient couldn’t identify the actual transmission. In steganography, the top-secret data which has to be interconnected is concealed in some other form of carrier in such a manner so that the secret data is imperceptible. In this review paper, we discussed about steganography, specifically audio steganography and wavelet transformation of audio signal which is utilized to hide audio signal in image in the transform domain. Our main objective is to discover a technique which is robust and it can withstand the attacks.
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Audio Steganography, Wavelet Transform, Audio signal, Image.