基于DDS技术的Harris Digit CD激励器频率调制过程  

Frequency Modulation of Harris Digit CD Exciter Based on DDS Technology

作　　者：丘杰宏 叶伟明[1] 李建威[1] QIU Jiehong;YE Weiming;LI Jianwei(Guangdong Province Broadcasting TV Technical Center,Guangzhou 510030,China)

机构地区：[1]广东省广播电视技术中心,广东广州510030

出　　处：《电声技术》2020年第8期87-90,共4页Audio Engineering

摘　　要：介绍直接数字式频率合成器(Direct Digital Synthesizer,DDS)的基本原理和基于DDS技术的Digit CD数字激励器的频率调制实现过程,并通过对DDS技术和传统的频率合成技术的比较,定量分析选择DDS技术的优势。The basic principle of direct digital synthesis frequency technology(DDS)and the realization process of frequency modulation of Harris Digit CD digital exciter of DDS and PLD technology are introduced.By comparing DDS technology with traditional frequency synthesis technology,the advantages of choosing DDS technology are quantitatively analyzed.

关 键 词：DDS PLL 奈奎斯特取样定理 NCO 可利用的DAC 

分 类 号：TN934.3[电子电信—信号与信息处理]