基于单片机的PDM中波发射机脉宽调制器设计  

Design of Pulse Width Modulator for PDM Medium Wave Transmitter Based on Single Chip Microcomputer

作　　者：邹颖丰 唐丽[1] ZOU Yingfeng;TANG Li(Guangxi Radio and Television Technology Center,Nanning 530022,China)

机构地区：[1]广西广播电视技术中心,广西南宁530022

出　　处：《电声技术》2024年第8期111-115,共5页Audio Engineering

摘　　要：设计一种基于单片机的脉冲宽度调制(Pulse Duration Modulation,PDM)中波发射机脉宽调制器,通过软件方式实现了音频信号的采样、增益控制、脉冲信号生成以及异常故障保护功能。实验测试结果表明,该设计在性能指标上与现有的模拟脉宽调制器相当,并成功解决了模拟脉宽调制器存在的一些问题,能够为广播发射机设备的数字化、智能化升级提供借鉴。This article designs a Pulse Width Modulation(PDM)medium wave transmitter pulse width modulator based on a microcontroller,which realizes the functions of audio signal sampling,gain control,pulse signal generation,and abnormal fault protection through software.The experimental test results show that this design is comparable to existing analog pulse width modulators in terms of performance indicators,and has successfully solved some of the problems existing in analog pulse width modulators.It can provide reference for the digital and intelligent upgrade of broadcast transmitter equipment.

关 键 词：中波发射机 脉冲宽度调制(PDM) 单片机 

分 类 号：TN912.3[电子电信—通信与信息系统]