While Bronze Age Proto-Sinaic and Proto-Canaanite syllabic inscriptions were found engraved on fragments of pottery and stone,evidence of early alphabetic script was also inscribed in ink onto a massive parchment scro...While Bronze Age Proto-Sinaic and Proto-Canaanite syllabic inscriptions were found engraved on fragments of pottery and stone,evidence of early alphabetic script was also inscribed in ink onto a massive parchment scroll,known as the Torah.Albeit the contours of those original characters transformed over time,it took the clairvoyant genius of Moses,and later the scribes of Ancient Israel,to configure and adapt ancient semitic prototypes into phonetic letters,producing the greatest literary document in the history of the world,the Bible.This article summarizes the acoustic properties of that alphabet,with further historical considerations.展开更多
针对大型试验场所试验过程中通信位置灵活分散、通信节点多的特点,满足人员分组通信互不干扰、通信状态可控、通信内容保密的需求,设计并实现了一种基于数据分发服务(Data Distribution Service, DDS)的语音通信系统。设计通信控制台对...针对大型试验场所试验过程中通信位置灵活分散、通信节点多的特点,满足人员分组通信互不干扰、通信状态可控、通信内容保密的需求,设计并实现了一种基于数据分发服务(Data Distribution Service, DDS)的语音通信系统。设计通信控制台对分组通信与动态登陆过程进行管理与控制,在保证语音质量的前提下,实现一对一、一对多、多对一、多对多的语音通信需求,并进行实时通信状态监控与用户管理。通过对通信终端软硬件的设计,实现将采集的语音转化为数字信号,并在本地进行数字信号的订阅与发布,提升网络使用效率,同时保证组间通信互不干扰,并且能够将通信内容通过RSA算法进行加密传输。语音通信系统能够有效降低外界电磁环境对通信质量的干扰,满足不同的使用场景和应用需求。展开更多
文摘While Bronze Age Proto-Sinaic and Proto-Canaanite syllabic inscriptions were found engraved on fragments of pottery and stone,evidence of early alphabetic script was also inscribed in ink onto a massive parchment scroll,known as the Torah.Albeit the contours of those original characters transformed over time,it took the clairvoyant genius of Moses,and later the scribes of Ancient Israel,to configure and adapt ancient semitic prototypes into phonetic letters,producing the greatest literary document in the history of the world,the Bible.This article summarizes the acoustic properties of that alphabet,with further historical considerations.
文摘针对大型试验场所试验过程中通信位置灵活分散、通信节点多的特点,满足人员分组通信互不干扰、通信状态可控、通信内容保密的需求,设计并实现了一种基于数据分发服务(Data Distribution Service, DDS)的语音通信系统。设计通信控制台对分组通信与动态登陆过程进行管理与控制,在保证语音质量的前提下,实现一对一、一对多、多对一、多对多的语音通信需求,并进行实时通信状态监控与用户管理。通过对通信终端软硬件的设计,实现将采集的语音转化为数字信号,并在本地进行数字信号的订阅与发布,提升网络使用效率,同时保证组间通信互不干扰,并且能够将通信内容通过RSA算法进行加密传输。语音通信系统能够有效降低外界电磁环境对通信质量的干扰,满足不同的使用场景和应用需求。
