摘要
"谐波分析仪"不同于目前广泛使用的"频谱分析仪",它利用了两正弦函数相乘产生一个差频项的基本原理,最终直接观察并测量到非正弦周期信号中各个频率分量的幅值,从而验证频谱分析理论.
Harmonic analyzer is different from spectroanalyzer which is widely used today. Based on the principle that the multiplication of two sine functions results in a difference frequency term, it observes and measures the amplitude of each frequency component of non-sinusoidac period signals, hereby verifies the theory of spectrum analysis.
出处
《合肥学院学报（自然科学版）》
2008年第4期41-43,57,共4页
Journal of Hefei University :Natural Sciences
关键词
频谱
傅里叶级数
实验仪器
spectrum
Fourier series
experimental device
