1) amplitude spectrum analysis
幅值谱分析
2) Analyzing the amplitude spectrum
振幅谱分析
3) short time spectral analysis
短时幅度谱分析
4) mass spectroscopy
值谱分析法
5) amplitude spectrum
幅值谱
1.
From the definition of DFT,calculation method of amplitude spectrum for digital signal is derived in this paper.
根据离散傅里叶变换DFT的定义,推导出数字信号幅值谱的解析计算方法,并通过C++Builder开发工具设计了一套测试程序,对数字合成信号进行了幅值谱的计算仿真,仿真结果验证了算法的有效性。
2.
In amplitude spectrum of vibrating signal of bearings,there generally exists much disturbance of uniform distributed noise frequencies,which is difficult to be erased by common filter and has a bad influence on identification of bearing vibrating frequency.
滚动轴承振动信号的幅值谱往往在整个频带上都存在着均匀分布的噪声频率干扰,难以用一般的滤波方法去除,这对轴承实际振动频率成分的识别有很大的影响。
3.
When the adhesive quality in multi-layered structures (steel shell, insulation layer and under lying layer) in airbourne solid rocket motors is inspected through oblique ultrasonic pulse echo in immersion, the amplitude spectrum extrema between echoes are used to get signal characters, in order to eliminate signal overlapping in the time field.
在采用斜声束水浸回波法对机载固体火箭发动机的钢、绝热层、衬层多层结构的粘接质量进行超声图像诊断时 ,为了消除信号混叠影响 ,本文利用检测回波之间的幅值谱极值提取信号特征值 ,并针对在实际检测中出现的极值点分布不均匀现象 ,提出了若干提高特征值提取精度的措施 ,有效地提高了检测信噪比 ,改善了图像质
6) FFT amplitude spectrum
FFT幅值谱
补充资料：幅值裕度
分子式：
CAS号：
性质：相角交界频率ωL(即开环频率特性相角ψ(ωL)=－180°时的频率)上。开环频率特性幅值。
CAS号：
性质：相角交界频率ωL(即开环频率特性相角ψ(ωL)=－180°时的频率)上。开环频率特性幅值。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条