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fft
- 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
- FFT频率提取的MATLAB实现,有具体的图形
quadterp.基于FFT的插值频率估计算法
- 基于FFT的插值频率估计算法,matlab代码。,FFT-based frequency estimation algorithm of interpolation, matlab code.
matlab_n.几个Matlab编程示例
- 几个Matlab编程示例,其中包括:单位抽样序列、复正弦序列、离散系统的差分方程、冲激响应和卷积分析、离散系统的频率响应分析和零、极点分布、基于Matlab的数字滤波器设计和FFT算法的应用等。,Some Matlab programming examples, including: random sequence of units, rehabilitation Sine sequences, discrete-time systems of differential equations, i
MATLABprograminfft.用Matlab产生正弦波,矩形波
- 1.用Matlab产生正弦波,矩形波,以及白噪声信号,并显示各自时域波形图 2.进行FFT变换,显示各自频谱图,其中采样率,频率、数据长度自选 3.做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱 4.用IFFT傅立叶反变换恢复信号,并显示恢复的正弦信号时域波形图 ,1. Using Matlab generated sine wave, rectangular wave, as well as the white noise signal, and display their
FFT
- 脑波FFT变换 调用格式见m文件头部说明(下边也复制了一份) 有配套.DLL.h.lib.ctf文件,可以在C或C++环境中调用 ------------------------------------ 保存为FFT.m文件 输入参数: N:进行FFT变换的点数(要求是2的N次幂); fs:信号的采样频率(frequency of simpling) sig:进行FFT变换的数组(一维)。 输出参数: f_sig:变换后的信号(一维数组) E_de
Periodogram-powe
- 平均周期图法和平滑平均周期图法估计功率谱 从经典功率谱估计周期图法原理入手,从理论上分析了其存在的局限性,借助Welch算法对其进行修正。依靠Matlab强大的数值分析和信号处理能力进行实验!! 用周期图法和welch法分别估计了一下信号的功率谱密度。采样频率200Hz,时间序列长度2048,FFT数据点数2048。其中welch法使用hanning窗,窗口长度600.-Average periodogram and periodogram smoothing method to est
ding
- 选取windows系统自带的ding.wav信号作为分析对象,在Matlab软件平台下,利用函数wavread对音频信号进行采样,记住采样频率和采样点数,听一下原始声音sound(y, fs, bits)。 (2)音频信号的频谱分析,先画出音频信号的时域波形;然后对音频号进行快速傅里叶变换fft(y,N),N取32768,画出信号的频谱特性,加深对频谱特性的理解。 (3)根据频谱,反演时域特性,画出时域波形。寻找幅值最大的两个频率,此频率除以fft点数在乘以采样频率就是信号的主频,即可合
matlab
- 实验指导 低通采样定理实验 FFT频谱分析实验 IIR滤波器设计实验 窗函数法FIR滤波器设计 频率采样法FIR滤波器设计实验-Experimental guide low-pass sampling theorem FFT spectrum analysis experiment experiment experiment IIR Filter Design Window Function FIR filter design frequency sampling FIR filter desi
soursesandcom
- 本程序验证手写fft频谱分析的正确性,并用于信号频域积分和频率检测。包含文档详细解释。-This procedure verified the correctness of handwritten fft spectrum analysis, and for the signal frequency-domain points and frequency of testing. Contains the document explained in detail.
fft
- 利用FFT算法产生2FSK,并对频率参数进行求取、分析-The use of FFT algorithms generate 2FSK, and frequency parameters to acquire, analyze
RifeJane
- rife-jane频率插值算法,用于频率的估计,在FFT的离散频谱值上进行频率估计.-rife-jane frequency interpolation algorithm for frequency estimation, the FFT spectral values on the discrete frequency estimation.
fftft
- 可以自定义精度(最小频率分辨率)的FFT频谱细化算法:FFT-FT-Can customize the precision (the minimum frequency resolution) of the FFT spectrum thinning algorithm: FFT-FT
matlab_correlation_frequency_estimate_powerspectru
- 此MATLAB程序用于自相关函数的估计(包括直接法和FFT法),信号的频率估计(包括MUSIC, ROOTMUSIC,ESPRIT和MVDR)和功率谱的估计(包括LevinsonDurbin迭代法,BT法和周期图法),并附带相应的仿真图以便于对比-MATLAB for correlation estimate :direct and FFT transform frequency estimate of signals:MUSIC, ROOTMUSIC,ESPRIT和MVDR power spe
Untitled1
- 基于FFT谱连续细化算法的高精度频率估计,这种算法可以精确到小数点后两位,这种算法与MUSIC法和ESPRIT法相比,计算量大大降低,而且精度非常高。-This procedure is based on the FFT spectrum continual refinement algorithm s high accuracy frequency, this algorithm may precisely to decimal point latter two, compared the M
FFt
- 对连续的单一频率离散序列 ,即k=8。 按采样频率 采样,截取长度N分别选N =20和N =16,观察其DFT结果的幅度谱。 -Discrete to continuous sequence of single frequency, ie k = 8. According to the sampling frequency sampling, truncation length N = 20 N, respectively, and selected N = 16, observed the
FFT
- fft分析程序,可以完成对输入信号的谐波分析,得到谐波的频率和幅值-fft analysis program, to be completed on the input signal harmonic analysis, harmonic frequency and amplitude
pll
- 基于simulink的频率合成器实现,可实现小数分频-Simulink-based frequency synthesizer implemented to achieve fractional
fft
- 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
fft
- 对信号进行FFT,绘制出频率变化振幅,以及Nyquist频率之前随频率变化的振幅,进行谱分析,对归一化频率0~1进行分析。(The signal is FFT, the amplitude of frequency change is drawn, and the amplitude of the frequency changes with the frequency before the Nyquist frequency. The spectral analysis is carried
