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[Algorithm] dit-dif-fft

Description: 快速傅立叶算法，按时间和按频率抽取的基2算法-Fast Fourier algorithm, time and frequency taken by the base 2 Algorithm
Platform: | Size: 1099776 | Author: 赵勇 | Hits:

[ISAPI-IE] fft-vb

Description: vb版本的fft变换，能够正反变换。正变换： 把时域信号转换成频域信号，反变换：能够把频域信号转换成时域信号。fft可广泛应用于工程领域，例如：信号的频域分析。震动，噪声的分析等等。-vb version of the fft transform, to transform pros. Transformation : put time domain signal into frequency domain signal, anti-transformation : can frequency-domain signal into time domain signal. Fft can be widely used in engineering fields, such as : the frequency-domain analysis. Vibration, noise analysis, and so on.
Platform: | Size: 2048 | Author: zxf | Hits:

[Windows Develop] How to implement the FFT algorithm

Description: Basically, this article describes one way to implement the 1D version of the FFT algorithm for an array of complex samples. The intention of this article is to show an efficient and fast FFT algorithm that can easily be modified according to the needs of the user. I ve studied the FFT algorithm when I was developing a software to make frequency analysis on a sample of captured sound.-Basically, this article describes one way to implement the 1D version of the FFT algorithm for an array of co mplex samples. The intention of this article is to show an efficient and fast FFT algorithm that can easily be modified according to the needs of the user. I ve studied the FFT algorithm when I wa s developing a software to make frequency Analytics sis on a sample of captured sound.
Platform: | Size: 27648 | Author: 冰城 | Hits:

[Program doc] czt-fft

Description: 基于FFT的极大似然载频估计算法，用CZT实现的MATLAB程序-FFT-based Maximum Likelihood estimation algorithm carrier frequency, with the CZT achieve MATLAB
Platform: | Size: 1024 | Author: 青青 | Hits:

[DSP program] DIF_FFT

Description: 按频率抽取计算FFT的C++源代码，可以较方便地移植到有C/C++开发环境的DSP中去-by FFT frequency calculated from the C source code, can be easily ported to the C/C development environment to the DSP
Platform: | Size: 1024 | Author: Y.P.Zhou | Hits:

[Special Effects] FFT(good)_CanTestWithImage

Description: 图像傅立叶变换(频域变换经典代码)，相信大家在学数字图像处理时，老师一般都要求学生用C++来实现图像Fourier变换，有了这个实例，就方便多了。_带图片可测试-images Fourier transform (frequency domain transform classic code), I believe we learn in digital image processing, teachers generally require students to use C Image Fourier transform, the existence of such examples, more convenient. _ Can be tested with pictures
Platform: | Size: 473088 | Author: whq | Hits:

[Documents] ZOOM-FFT

Description: 这是一基于MATLAB的复调制ZOOM-FFT的研究和实现的一篇文章，为的是提高频率分辨率。-This is a MATLAB-based complex modulation ZOOM- FFT Research and Implementation of an article, To improve the frequency resolution.
Platform: | Size: 159744 | Author: 陶陶 | Hits:

[Wavelet] mdiFFT

Description: FFT 频域变化并显示 方波 三角波 正弦 及随机序列 -FFT frequency domain shows changes sine square and triangular wave random sequence
Platform: | Size: 88064 | Author: | Hits:

[Algorithm] fft

Description: 由上述实验过程的图像变化可知，经过傅立叶变换和反变换及DCT离散余弦变换和反变换后，图像都发生了很大的变化，首先是经过2-D傅立叶变换后，图像数据频域出现高频数据集中，低频数据在四周的现象，然后再经过2-D傅立叶变换反变换后，图像再次恢复原始图。而2-D离散余弦变换对图像的影响也是如此。-From the above experiment, we can see the image change, after Fourier transform and inverse transform and DCT discrete cosine transform and inverse transform, the images have changed a lot, first of all, is a 2-D Fourier transform, the image data emergence of high-frequency frequency-domain data, low-frequency data in the four weeks of the phenomenon, and then after a 2-D Fourier transform inverse transform, the image again to restore the original map. And 2-D discrete cosine transform on the impact of images is also true.
Platform: | Size: 475136 | Author: | Hits:

[Embeded-SCM Develop] noise-FFT

Description: 信号被白噪声干扰，对该信号进行采样，利用傅立叶变换对其频率进行分析。-Signal is white noise interference, the signal sampling, the use of Fourier transform of its frequency analysis.
Platform: | Size: 18432 | Author: yuanjia | Hits:

[Algorithm] fft

Description: 快速傅立叶变换源代码 可以进行便捷的频域分析-Fast Fourier Transform source code can be convenient frequency domain analysis
Platform: | Size: 3072 | Author: frank | Hits:

[Algorithm] fftfrequency

Description: 对FFT的基2频析型算法实现，对信号分析较为实用-Base 2 of the FFT frequency analysis type algorithm for signal analysis is more practical
Platform: | Size: 2048 | Author: swjtuhy | Hits:

[matlab] fft

Description: 分四种情况实现fft 分别是时间抽取递归 、时间抽取循环、频率抽取递归和频率抽取循环 以及附带dft的算法描述-Fft realize sub-four cases were collected recursive time, time taken from the cycle, frequency and frequency of samples taken from recursive cycle, as well as incidental DFT algorithm described
Platform: | Size: 1024 | Author: didi | Hits:

[matlab] fft

Description: FFT频率提取的MATLAB实现，有具体的图形-FFT frequency extracted MATLAB realize, there are specific graphics
Platform: | Size: 1024 | Author: jonelove | Hits:

[SCM] FFT

Description: MSP430编写的快速傅立叶变换，用于信号在频域中的分析，经过msp430f2274测试完全正常-MSP430 prepared by fast Fourier transform for signal analysis in frequency domain, after a completely normal test msp430f2274
Platform: | Size: 1024 | Author: 余松柏 | Hits:

[Mathimatics-Numerical algorithms] FFT

Description: Matlab中的fft分析含噪声的信号，其中有直接FFT，时域同步平均后FFT，频域同步平均后FFT-Matlab' s fft of noisy signals, which have a direct FFT, time-domain synchronous averaging the FFT, frequency domain averaged FFT synchronization
Platform: | Size: 4096 | Author: dengyan | Hits:

[VHDL-FPGA-Verilog] FFT

Description: The VHDL implementation of 8-point FFT in VHDL. Radix 2 Decimation in Frequency-The VHDL implementation of 64-point FFT in VHDL. Radix 2 Decimation in Frequency i am found of it.It s really very good!
Platform: | Size: 31744 | Author: 小鸟动人 | Hits:

[Algorithm] FFT

Description: 利用FFT估计正弦信号的频率,要估计一个叠加了高斯白噪声的正弦信号 的频率 ，可以通过对x(n)做傅里叶变换，得到频谱图，找出幅度的最大值对应的频率值 ，进行多次变换，求出均方误差 。改变信噪比SNR，通过仿真可以得出随着信噪比增加，均方误差减小。-Sinusoidal signal using FFT frequency estimation, to estimate a Gaussian white noise superimposed on the frequency of sinusoidal signals, can be achieved by x (n) be the Fourier transform to get spectrum to identify the magnitude of the frequency value corresponding to the maximum , several transformations, find the mean square error. Change the signal to noise ratio SNR, the simulation can be drawn as the SNR increases, the mean square error decreases.
Platform: | Size: 1024 | Author: 云卷云舒 | Hits:

[matlab] fft

Description: Matlab的FFT算法程序 里面有基2时间抽取的FFT 还有基2频率抽取的FFT -Matlab' s FFT algorithm which has taken the time base 2 radix-2 FFT have taken the FFT frequency
Platform: | Size: 1024 | Author: jinbang | Hits:

[Other] fft

Description: FFT频偏估计算法，性能不错，用于GMSK调制(FFT frequency offset estimation algorithm, good performance, for GMSK modulation)
Platform: | Size: 3072 | Author: tengmiupun | Hits:
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