| 摘要 |
PURPOSE: A secret voice communication device and a control method thereof are provided to increase secret level in voice communication by compositively applying various modes and to minimize the reconstitution of the original signal. CONSTITUTION: A communication unit(210) performs the transmitting and receiving of signal through a frequency band of an analysis voice signal. A key exchanger(230) exchanges one-time encryption key by communicating with a secret voice communications device through the communication unit. An encryption encoder(240) converts the analog audio signal into based on an analog password voice signal based on a key exchanged by a key exchange unit and transmits the converted analog password voice signal through the communication unit. |
