diff --git a/README.md b/README.md
index d3f0252..2980a84 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@
 - Git
 - Windows函数库相关函数
 - IEEE POSIX标准下的相关函数
+- FFTW 使用快速傅里叶变换分析音频文件
 
 ## 主要功能
 ### 按照WAV格式标准读取WAV格式文件
diff --git a/Unused/FFT/FFT.cpp b/Unused/FFT/FFT.cpp
new file mode 100644
index 0000000..7b75a08
--- /dev/null
+++ b/Unused/FFT/FFT.cpp
@@ -0,0 +1,88 @@
+#include "pch.h"
+#pragma comment(lib, "E:\\Lib\\libfftw3-3.lib")
+#pragma comment(lib, "E:\\Lib\\libfftw3f-3.lib")
+#pragma comment(lib, "E:\\Lib\\libfftw3l-3.lib")
+#include <stdio.h> 
+#include <stdlib.h> 
+#include "fftw3.h"  
+#include <cmath>
+#include <algorithm>
+#include <iostream>
+//�������Ƶ��Ϊ FR , ��������Ϊ1024 (NN),��ô�������N���������Ƶ�� X(N) = (FR / NN) * N
+#define FR 44100
+class Get_RGB {
+public:
+	static void fftw3(float *in,int NN, int &hz);
+	double hztospectrun(double hz);
+	static void spectral_color(double &r, double &g, double &b, double l);
+	static void GetRGB( float* in,int NN, double &R, double &G,double &B){//���RGBֵ
+		int hz;
+		double l=0;
+		fftw3(in,NN, hz);
+		spectral_color(R, G, B, l);
+	}
+};
+void Get_RGB::fftw3(float *in ,int NN, int &frequency)
+{
+	struct Max {
+		int id=0;
+		int value=0;
+	}M;	
+
+	int i;
+	fftwf_complex *out = NULL; // fftwf_complex --> ��Ϊfloat�汾
+	fftwf_plan p;
+	in = (float *)fftwf_malloc(sizeof(float) * NN);
+	out = (fftwf_complex *)fftwf_malloc(sizeof(fftwf_complex) *NN);
+	// ����Ҷ�任
+	p = fftwf_plan_dft_r2c_1d(NN, in, out, FFTW_ESTIMATE);
+	fftwf_execute(p);
+	// ���������
+	for (i = 0; i < NN; i++)
+	{
+		float len = sqrt(out[i][0] * out[i][0] + out[i][1] * out[i][1]);
+		if (len > M.value) {
+			M.id=i ;
+		}
+	//	printf("%d ",i);
+	//	printf("%.2f ", len);
+	}
+	frequency = M.id*(FR / NN);
+	//frequency = M.id*(FR / NN);
+	// �ͷ���Դ
+
+
+	return;
+}
+int main() {
+	float in[10000];
+	double R, G, B;
+	int NN;
+	std::cin >> NN;
+	for (int i=0;i < NN;i++) {
+		std::cin >> in[i];
+	}
+	Get_RGB::GetRGB(in,NN, R, G, B);
+	std::cout << R << " " << G << " " << B;
+	std::cout << "\n"<< R << " " << G << " " << B;
+}
+double  Get_RGB::hztospectrun(double hz) {
+	double hbox;
+	hbox = hz;
+	for (;hbox > 800;hbox = hbox / 2);
+	return 	hbox;
+}
+void  Get_RGB::spectral_color(double &r, double &g, double &b, double l) // RGB <0,1> <- lambda l <400,700> [nm]
+{
+	double t;  r = 0.0; g = 0.0; b = 0.0;
+	if ((l >= 400.0) && (l < 410.0)) { t = (l - 400.0) / (410.0 - 400.0); r = +(0.33*t) - (0.20*t*t); }
+	else if ((l >= 410.0) && (l < 475.0)) { t = (l - 410.0) / (475.0 - 410.0); r = 0.14 - (0.13*t*t); }
+	else if ((l >= 545.0) && (l < 595.0)) { t = (l - 545.0) / (595.0 - 545.0); r = +(1.98*t) - (t*t); }
+	else if ((l >= 595.0) && (l < 650.0)) { t = (l - 595.0) / (650.0 - 595.0); r = 0.98 + (0.06*t) - (0.40*t*t); }
+	else if ((l >= 650.0) && (l < 700.0)) { t = (l - 650.0) / (700.0 - 650.0); r = 0.65 - (0.84*t) + (0.20*t*t); }
+	if ((l >= 415.0) && (l < 475.0)) { t = (l - 415.0) / (475.0 - 415.0); g = +(0.80*t*t); }
+	else if ((l >= 475.0) && (l < 590.0)) { t = (l - 475.0) / (590.0 - 475.0); g = 0.8 + (0.76*t) - (0.80*t*t); }
+	else if ((l >= 585.0) && (l < 639.0)) { t = (l - 585.0) / (639.0 - 585.0); g = 0.84 - (0.84*t); }
+	if ((l >= 400.0) && (l < 475.0)) { t = (l - 400.0) / (475.0 - 400.0); b = +(2.20*t) - (1.50*t*t); }
+	else if ((l >= 475.0) && (l < 560.0)) { t = (l - 475.0) / (560.0 - 475.0); b = 0.7 - (t)+(0.30*t*t); }
+}
\ No newline at end of file
diff --git a/windows/main.cpp b/windows/main.cpp
index 9de8492..ad0925b 100644
--- a/windows/main.cpp
+++ b/windows/main.cpp
@@ -22,7 +22,7 @@ int main(int argc, char * argv[]) {
 	glutInitWindowPosition(100, 100);
 	glutInitWindowSize(700, 700);
 	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
-	int hw = init_test_wav(60);
+	int hw = init_test_wav(120);
 	create_fields(hw);
 	nwd.create("Fields");
 	nwd.show();