虚拟软件在农村有线广播指标验收测试中的应用

Virtualization Software in the Rural Cable Broadcast Indicator Acceptance Test

RightMark Audio Analyzer是一款独立的音频系统测试工具,可以检测声卡和其他实时声音设备的Electroacoustical表现,通过播放检测信号并记录其通过测试设备后的信号特征来实现测试,它能完成许多价格昂贵的专业仪器才能完成的工作,其测试项目有频率响应、信噪比、动态范围、总谐波失真、立体声分离度和互调失真,其中,频率响应和总谐波失真是农村有线广播指标验收测试最重要的两项。

RightMark Audio Analyzer is a separate audio system test tools, and it can detect the sound card and the other real-time audio equipment＇s Electroacoustical performance. It achieves the test through broadcasting the signal and recording their signal characteristics after passing the equipment. It can complete many works which in the past can be only completed by the expensive and professional equipment. The testing items include Frequency Response, S/N Ratio, Dynamical Range, Total Harmonic Distortion, Stereo Crosstalk and Intermodulation Distortion. Among them, it is commonly to target the frequency response and total harmonic distortion as the most important in the rural cable broadcast acceptance testing.