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kiss_fft_v1_2_6
- Kiss FFT is a small and simple FFT library. It has no complicated platform-specific optimizations, can do either fixed or floating point with just a recompile, and is efficient enough for all but the most demanding applications.
fixed_point_FFT
- 本示例程序演示了如何计算定点和浮点各个长度和位数的按时间抽取FFT算法。所有程序在VC6下编译通过。-This sample application demonstrates how to calculate the various fixed and floating-point and the median length of time taken by FFT algorithm. All procedures under VC6 compile.
FFT_2_DIT_Fixed
- 程序 FFT_2_DIT_Fixed 是基2_DIT_*定点*_FFT算法，值得学习的地方很多。亮点有：倒位序采用最简单，最高效的位移操作；实现存储的旋转因子表；定点溢出处理；灵活多样的宏定义。函数调用形式：void fft(COMPLEX *x)点数在头文件以宏定义形式出现。-Program FFT_2_DIT_Fixed is based 2_DIT_* fixed* _FFT algorithm, it is worth learning a lot of places. Highligh
FFT_fix_point
- 一般厂家都会提供定点fft库，最好用厂家提供的，因为这种库都是经过优化的算法，速度快，一般是汇编实现的。实在没有库可以用这个-Fixed-point in-place Fast Fourier Transform
fft2
- 实现定点化8点FFT计算,函数内部用fi()构造定点数对象。(fixed-point 8-point FFT function)