The sinusoid frequency estimation algorithms for all phase spectrum analysis are studied. 摘要研究了应用于全相位频谱分析的正弦波频率估计算法。
Measurement was made with a spectrum analyzer by first filtering out the fundamental sinewave. 首先滤除基础正弦波频率。
According to the oscillation theory of membrane, the inherence frequency and basic frequency of the flexible membrane are obtained. 根据薄膜振动理论得到了弹性膜片的固有频率和基频。