基于虚拟仪器的中波广播音频自动测试系统设计  

Design of Medium Wave Broadcast Audio Automatic Test System Based on Virtual Instrument

作　　者：何吉祥 He Jixiang(Guangdong Radio and Television Technology Center,Guangdong 510000,China)

机构地区：[1]广东省广播电视技术中心,广东510000

出　　处：《广播与电视技术》2025年第4期79-83,共5页Radio & TV Broadcast Engineering

摘　　要：本文提出了一种基于虚拟仪器平台的自动测试方案,实现对通用音频传输设备电声指标的精准评估。该方案通过对比输入音频信号与音频设备输出信号,达成精确测试目的。以中波广播无线发射台站的传输设备为具体应用实例,方案可自动、高效地测试信噪比、频率响应和谐波失真这三大关键电声指标。借助先进的虚拟仪器软件平台,方案成功集成一键式自动信号发送及数据采集分析功能,极大地提升了音频设备自动测试的效率。This article proposes an automatic test scheme based on virtual instrument platform.The scheme can accurately evaluate the electro-acoustic index of general audio transmission equipment by comparing the input audio signal with the output signal of audio equipment.Taking the transmission equipment of medium wave radio transmitting station as an example,the scheme can automatically test three key electro-acoustic indexes,such as signal-to-noise ratio,frequency response and harmonic distortion.Based on the advanced virtual instrument software platform,this scheme realizes the functions of one-click automatic signal transmission and data acquisition and analysis,to efficiently complete the automatic test of audio equipment.This scheme significantly improves the efficiency of automatic testing of audio equipment.

关 键 词：虚拟仪器 音频传输设备 电声指标 自动测试 

分 类 号：TN934.1[电子电信—信号与信息处理]