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Fourier inverse transform IFFT, to restore the signal from the frequency domain.
用傅里叶反变换IFFT, 从频域恢复信号.
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Some interpolated Discrete Fourier Transform ( DFT ) methods are analyzed.
本文首先讨论并分析了各种插值DFT ( 离散傅里叶变换 ) 算法,然后提出了一种实正弦信号的快速插值频率估计方法.
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One-dimensional vector of discrete short-time Fourier transform function.
一 维 向量的离散 短时 Fourier变换函数.
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针对模型, 通过双FOURIER级数展开和繁琐的数学推导, 求得了输出电压的严格解析表达式.
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The objects 3-D profile are reconstructed by using of the Fourier transform.
双光纤莫尔干涉条纹与傅里叶变换法相结合可以测量物体的三维轮廓.
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The extension of real-valued order Fourier transforms to complex regime is natural.
将分数傅立叶变换的阶数由实数域扩展到复数域是非常自然的.
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Some applications of the fast Fourier transform to the polynomial calculation.
多项式计算当中快速傅立叶变换的应用.
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The experimental conclusion is indicated rather strikingly in the Fourier plot of Fig. 223.
实验的结论非常明显地显现在图223的傅里叶曲线上.
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Fourier's analysis method was further used to discover frequency multiplication weak signal.
结合傅里叶分析方法进一步找出风机存在的倍频微弱信号.
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A implementation of the discrete Fourier transform in visual basic classic.
阿实施离散傅里叶变换在VisualBasic中的经典.
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A multi-distorted invariant orthogonal moments, Jacobi-Fourier moments ( JFM ), were proposed.
提出一种多畸变不变的正交图像矩: 雅可比 - 傅 立叶 矩.
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For anisotropic materials Fourier's law must be formulated in a more generalized form.
对于各向异性的物质来说,傅里叶定律必须改写成具有更普遍意义的形式.
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- 相关词组
- Discrete Fourier Transform不连续傅立叶变换;
- fourier transform傅里叶变换，傅里叶变换式;
- fast fourier transform快速傅立叶变换（法）;
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