Ternary Echo Hiding in Audio Files

We propose a new family of echo hiding procedures for working with ternary watermarked audio files. Most attention is paid to the case when the image is used as a watermark. The possibility of using a melody for this purpose is also mentioned. A human is supposed to be a detector to check for a watermark in an audio file. The approach employs infinite impulse response (IIR) filters of a particular form that allow multiple symbols to be inserted into the container's fragment. The suggested method surpasses the classical implementation of echo hiding parameters regarding the method's payload and resistance to various attacks.