摘要
介绍了用数字方式实现频率合成技术的基本原理和DDS芯片AD9852的结构、功能特点,并采用单片机控制AD9852设计及实现能产生多种信号模式的声频通信信号源,可以通过串口通信修改输出信号的参数。在水声通信可利用带宽很窄的情况下具有实用价值。
Direct digital synthesize(DDS)is a new method in frequency synthesize.Underwater acoustic com muni-cation has become a hotspot in modern communication research,because of its ad vantage,direct digital syn thesize-has been widely applied to it.The principle of DDS,the structure and features of AD9852are introduced.Audio communication signal source which can generate multiple signal modes is designal and realized by MCU controlled AD9852.It can modi fy the parameter through serial interface.This paper also introduces some application of this signal source.It is worth using under the circumstance of narrow band in underwater acoustic communication.[
出处
《电声技术》
北大核心
2004年第3期27-29,共3页
Audio Engineering
