DAM 10 kW中波发射机电声指标的分析与测试  

The Analysis and Testing of Acoustic Indicators for DAM 10 kW Medium Wave Transmitter

作　　者：舒国祥 SHU Guoxiang(Guizhou Provincial Radio and Television Bureau 706 Station,Kaili 556000,China)

机构地区：[1]贵州省广播电视局七〇六台,贵州凯里556000

出　　处：《电声技术》2024年第3期147-149,共3页Audio Engineering

摘　　要：随着信息技术的不断发展,用户对中波广播服务提出更高的要求。谐波失真、频率响应及信噪比是中波发射机的3个典型电声指标,是衡量一部发射机工作性能的基本标准。在分析数字调幅(Digital Amplitude Modulation,DAM)10 kW中波发射机工作原理的基础上,测试发射机的3个电声指标,提出了具体的测试方法,明确了影响电声指标的因素。With the continuous development of information technology,users have higher requirements for medium wave broadcasting services.Harmonic distortion,frequency response,and signal-to-noise ratio are three typical electroacoustic indicators of medium wave transmitters,which are the basic standards for measuring the performance of a transmitter.On the basis of analyzing the working principle of Digital Amplitude Modulation(DAM)10 kW medium wave transmitter,this article tests three electroacoustic indicators of the transmitter,proposes specific testing methods,and clarifies the factors that affect the electroacoustic indicators.

关 键 词：中波广播 发射机 电声指标 测试方法 

分 类 号：TN948.4[电子电信—信号与信息处理]