A Real-time Underwater Speech Communication System
作者单位：Shandong Computer Science Center Shandong Provincial Key Laboratory of computer Network
会议名称：《2012年计算机应用与系统建模国际会议》
会议日期：2012年
学科分类：082403[工学-水声工程] 08[工学] 0824[工学-船舶与海洋工程]
关 键 词：Speech signal processing MELPE BPVC LSF FH 4FSK
摘 要：With frequency hopping (FH) communication system and ultra-low-rate speech coding technology, the paper designed a real-time underwater speech communication system, for which the hardware solution is also given. In the system, the part of source coding is a 300bps vocoder based on enhanced mixed excitation linear prediction (MELPE). In order to overcome the multi-path interference in underwater acoustic communication, FH technology is used because of its low probability of intercept as well as anti-interference. The test results showed that the system had good performance and could be used for underwater communication.