Data hiding in audio file by modulating amplitude

الملخص EN

In this paper, two methods of a steganography are introduced for hiding secret data in audio media file (.WAV).

Hiding in audio becomes a challenging discipline, since the Human Auditory System is extremely sensitive.

The first proposed method is used to embed binary sequence with high data rate by modulating the amplitude of WAVE file.

The embedding process utilizes the amplitude modulation of the cover signal; the manipulation of the sample depends on its previous sample and next sample.

By using this hiding method, good hiding rate is achieved, but it is noticed that the secret data produced by this method does not resist the modifications produced compression.

The second suggested hiding methods are oriented to embed the secret data such that it is capable of surviving against modifications produced by compression.

This method exploits some of the features of speech signal, more especially the features of the Voiced-Unvoiced blocks.

The second proposed hiding method is used to embed secret data by modulating the amplitude of the voiced blocks of cover audio data.

Hiding rate is not high as first method since it hiddes only in voiced segments, so it could survive against compression.