Title :
A secure voice communication system based on DSP
Author :
Lei, Hongyu ; Zhao, Yu ; Dai, Yuewei ; Wang, Zhiquan
Author_Institution :
Dept. of Autom., Nanjing Univ. of Sci. & Technol., China
Abstract :
In this paper, a secure voice communication system based on TMS320VC5410 is proposed, which includes the hardware design and the software design. Among them, the A/D and D/A conversions of voice signals are implemented by the MC145480, while data transmission is performed by the TL16C554. A chaotic voice encryption algorithm combining cat map and logistic map is implemented in this system. Experiments of both encrypted and non-encrypted voice communication over short distance have been performed, which demonstrates the feasibility of the proposed system.
Keywords :
analogue-digital conversion; data communication equipment; digital signal processing chips; digital-analogue conversion; security of data; speech coding; voice communication; A/D conversion; D/A conversions; chaotic voice encryption algorithm; data transmission; hardware design; logistic map; secure voice communication system; software design; voice signals; Clocks; Codecs; Cryptography; Decoding; Digital signal processing; Digital signal processing chips; Frequency synchronization; Hardware; Phase change materials; Software design;
Conference_Titel :
Control, Automation, Robotics and Vision Conference, 2004. ICARCV 2004 8th
Print_ISBN :
0-7803-8653-1
DOI :
10.1109/ICARCV.2004.1468811
