Speech communication is most popular now days. Everyone wants secure communication that's way use encrypts and decrypt data scheme. It is basically used for military and business purpose. People want high security level during their communication. The numbers of algorithms are used for speech encryption and decryption. However in this paper the work is done on three different kinds of algorithms i.e. NTRU, RSA and RINJDAEL these three popular algorithms are used for speech encryption and decryption approach. Basically NTRU and RSA algorithms are asymmetric in nature and RINJDAEL algorithm is symmetric in nature. In speech encryption, first the speech is converted into text then further the text is converted into cipher text.