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1)  the frequency spectrum
频谱窗
1.
This paper derives the frequency spectrum of digital filters from the Fourier theory, and derives the noise compression degree of digital filters from the theory of stochastic process.
根据傅里叶理论导出了数字滤波器的频谱窗 ;根据随机过程理论导出了数字滤波的噪声压缩度。
2)  Spectrum opening windows
频谱开窗
3)  convolution window spectrum
卷积窗频谱
1.
And an important conclusion is proved that the frequency response function of all phase filter equals the discrete convolution between frequency sampling vector and convolution window spectrum, which can interpret the reason that this de.
深入剖析了全相位设计法从传统频率采样法衍生的内在机理,证明了全相位滤波器的频率响应函数等于频率采样向量与卷积窗频谱的离散卷积这一结论,该结论很好地解释了全相位设计法适合设计间断频率特性滤波器的原因。
4)  spectral window
频谱窗口<光>
5)  digital filter frequency spectrum window
数字滤波器/频谱窗
6)  window spectrum
窗谱
1.
Because of the variety of window functios and the complicated spectrum formulas of most window function,the rectifying technique by using the wave pattern of the window spectrum is limited.
仿真结果表明窗谱图形峰值搜寻校正方法同样可达到窗谱公式校正方法的精度。
2.
Based on comprehensive analysis to the dependence of four methods of discrete spectrum correction to window spectrum(interpolation correcting method,energy centroid correcting method,FFT+FT method and phase difference correcting method),an universal method of discrete spectrum correction independent of window spectrum is presented.
在系统分析了离散频谱校正的四种方法(比值法、能量重心法、FFT+FT法和相位差法)对窗谱函数的依赖关系的基础上,将相位差法和连续傅立叶变换法有机结合起来,提出了一种精确的、不依赖窗谱函数的通用离散频谱校正方法,并通过仿真分析验证了该方法的正确性和有效性。
补充资料:倍频谱带
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性质:又称倍频谱带。红外光谱分析中的一种谱带;指某个吸收频率为基谐振动频率的2倍或3倍时的吸收带。它的产生是由于两个原子核间的库仑排斥力使振动频率发生了异常变化的结果。泛频带的吸收强度往往很低,因此这个吸收带有时测不出来。

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