What is audio steganography?

Audio steganography means that the hide the information in that audio formate on the audio formate by using the LSB ,Echo,phase and spread spectrum coading.

in these steganography method is most usefual and good method to hide the data in audio formate but one major disadvantage is if in audio steganography metod in processing data in that some intrupts are ocurred then input is not equal to output.