DOI: 10.5821/dissertation-2117-95060
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Methods of covert communication of speech signals based on a bio-inspired principle

Dora María Ballesteros Larrota

Abstract: This work presents two speech hiding methods based on a bio-inspired concept known as the ability of adaptation of speech signals. A cryptographic model uses the adaptation to transform a secret message to a non-sensitive target speech signal, and then, the scrambled speech signal is an intelligible signal. The residual intelligibility is extremely low and it is appropriate to transmit secure speech signals. On the other hand, in a steganographic model, the adapted speech signal is hidden into a host signal by… Show more

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