Abstract
Steganography is the practice of encoding secret in formation in indiscernible way. Audio steganography is the science of hiding some secret text or audio information in a host audio. T his paper contains audio stegnography using bit mod ification of time domain audio samples which is a well known simple technique for multimedia data embedding with potential for large payload But before applying stegnography or hiding secret audio in cover audio a chaos based encryption is performed on secret aud io data in order to increase the security against steganalysis. And the bit modification technique is also not the simple LSB (least significant bit) modification tec hnique. It contains two approaches which make the steganalysis more difficult as compa re to simple LSB technique. First approach is with selection of bits of sample for embedding secret audio while the other approach is to use the compliment of the secret audio before hiding it in the host message. The improvised proposed approach works against steg analysis and decreases the probability of secret audio being extracted by an iChaos based encryption is used to secure saudio in case the stegnography technique breaks.
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