Abstract
We propose a new family of echo hiding procedures designed to work with
audio files with ternary watermarks. 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 prove the presence of a watermark in the audio file. The approach
employs infinite impulse response (IIR) filters of a particular form
that provides a capability insertion a few symbols into a fragment of
the container. The suggested method’s payload and resistance to various
attacks exceed the parameters of the classical implementation of echo
hiding.