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快速傅立叶变换算法频域滤波，效果不错，可以试试。-Fast Fourier Transform algorithm for frequency domain filtering, good results, you can try.
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fft快速傅里叶变换 实现256次计算 图像显示功能-computing an image display function FFT fast Fourier transform to achieve 256 times
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FFT快速傅里叶变换，实现2的16次方，图像显示-FFT fast Fourier transform, the 2 ^ 16, the image display
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采用快速傅里叶变化，进而获得函数的相频特性和幅频特性-Phase frequency characteristics amplitude-frequency characteristics using the fast Fourier transform, and then get the function
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利用FFT快速傅立叶变换对已知几种信号进行处理，将时域信号快速变换到频域-FFT Fast Fourier Transform known several signal processing, the rapid transformation of the time domain signal to the frequency domain.
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快速傅立叶变换频谱分析时的误差分析以及如何削弱误差 自己写的-Error analysis of the fast Fourier transform spectrum analysis and how to weaken the error to write their own
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DSP38335实现快速傅里叶变换的例程，适合于初学者，里面内容还算详细-The DSP38335 achieve fast Fourier transform routines, suitable for beginners, the inside content is fairly detailed
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离散傅里叶变换和快速傅里叶变换的程序，简单实用。-The discrete Fourier transform and fast Fourier transform process.
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图像变换，快速傅里叶变换，编写快速傅里叶变换算法程序，验证二维傅里叶变换的平移性和旋转不变-Image transform, fast Fourier transform, to write fast Fourier transform algorithm, verify that the same two-dimensional Fourier transform of translational and rotational
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在VC环境下实现图像的打点显示，反色，及快速傅里叶变换，还可以通过去两个点之间的矩形进行截图显示，与截图处理变换后的显示-The VC environment image RBI anti-color, and fast Fourier transform, can also go a rectangle between two points screenshots show screenshots processing transformed display
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自编快速傅里叶变换C++类程序，亲测通过，实现频谱分析-Self fast Fourier transform C++ class program, pro-test by spectral analysis
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Linux系统中进行快速傅里叶变换完整程序，包含测试数据，亲测通过-Linux system, the fast Fourier transform in the full program, including test data, measured by the pro-
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matlab的快速傅里叶变换，请大家看看合格不-fast Fourier transform in matlab, please take a look at qualified not
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由32位MCU为主控制器，通过AD转换，对音频信号进行采样，把连续信号离散化，然后通过FFT快速傅氏变换运算，在时域和频域对音频信号各个频率分量以及功率等指标进行分析和处理，然后通过高分辨率的LCD对信号的频谱进行显示。该系统能够精确测量的音频信号频率范围为20Hz-10KHz，其幅度范围为5mVpp-5Vpp，分辨力分为20Hz和100Hz两档。测量功率精确度高达1 ,并且能够准确的测量周期信号的周期，-Main controller by a 32-bit MCU, via the AD c
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A Fast Fourier Transform (FFT) is an efficient algorithm to compute the Discrete Fourier Transform (DFT) and its inverse. There are many distinct FFT algorithms involving a wide range of mathematics, from simple complex-number arithmetic to group the
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离散数据的快速傅里叶变换。读取一段数值模拟得到的时间历程曲线，进行fft变换，得到幅频曲线。-Fast Fourier transform of the discrete data. Read the section of numerical simulation of the time course of the curve, fft transform, the amplitude-frequency curve.
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数字信号处理中的离散傅里叶变换用快速傅里叶变换算法实现（为按时间抽取FFT算法实现的程序；考虑到补零情况，进行信号频谱分析过程中可能出现的问题，例如混淆、泄漏、栅栏效应等）-Program of digital signal processing in the discrete Fourier transform using a fast Fourier transform algorithm (as achieved by the decimation-in-time FFT algorith
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利用三角波合成方波，然后进行快速傅里叶变换。-Using the triangular wave synthesizer square wave, and then fast Fourier transform.
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在数字图像处理中，对图像通过时域的快速傅立叶变换提取图像边缘的过程中，会出现噪声干扰，提取出一些对图像造成干扰的信息，使得提取效果较差。通过设计一个二维高斯滤波器降低噪声对边缘提取的干扰，从而得到较好的边缘提取效果。-In digital image processing, the image edge extraction process on the image through the fast Fourier transform of the time domain, there will
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1.实现对lena.bmp灰度图像的快速傅立叶变换,并求其变换后的系数（幅度）分布；
2.实现对lena.bmp图像做离散余弦变换,选择适当的DCT系数阈值对其进行DCT反变换 ；-1 to achieve the fast Fourier transform on lena.bmp grayscale image, and to find the transformed coefficients (amplitude) distribution 2. To achieve lena.bm
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