Secure Information Hiding in Audio Digital Files

In this paper we discuss the possibility of hiding information in audio digital files by using the Echo Hiding technique that involves the insertion of information within audio tracks by adding echoes according to certain rules within the track that you want to modify. The main problem we copy with it is the insertion of information without the user playing the modified track being able to distinguish it from the original one. Here we present our implementation of a variation of the Echo Hiding technique and its experimental evaluation that gives confirmation of its high potentiality.