Speech Scrambling techniques are used to transform a speech signal into an unintelligible
signal in order to avoid eavesdropping.
Such systems are used to guarantee end-to-end security for speech in real time
communication systems such as GSM, VoIP,
Telephone, analogue Radio and so on.
SIPER is an educational tool developed in SIPL. It demonstrates speech, audio and image
processing techniques and can also be
used as an analysis tool for research purposes. SIPER allows experimentation with key
parameters of each technique and shows
both intermediate and final results. It is very modular and its modules can be written in C/C++.