代码搜索：stft
找到约 216 项符合「stft」的源代码
代码结果 216
www.eeworm.com/read/283390/9025480
m stft.m
load mtlb
load mtlb;
x=mtlb;
figure(1)
plot(0:4000,x);
xlabel('n');
ylabel('x(n)');
title('random unbalanced signal x');
n0=0;
R=128;
n1=4000;
n2=n0+R;
n=[n0:n1];
w=[(n-n0)>=0];
wd=[(n
www.eeworm.com/read/466131/7039439
pdf stft.pdf
www.eeworm.com/read/450865/7475511
m stft.m
%产生信号
s=data;
%采集点数
N=8192;
n=0:N-1;
%采样频率
Fs=15360;
t=n/Fs;
F=n*Fs/N;
%滤波器阶数;
n=10;
%低通滤波器的截止频率设为500Hz(直接给出截止频率即可);
Wn=500/(Fs/2);
%计算滤波器系数;
[a,b]=butter(n,Wn);
%对信号进行低通滤波;
a=filter(a
www.eeworm.com/read/397896/8016717
pdf stft.pdf
www.eeworm.com/read/139077/13189388
m stft.m
%*********************STFT函数***************************
% 输入变量X表示是信号数据（列向量）；
% t_interval是窗函数的移动步长（整数,一般为1）；
% f_interval是做时的频谱采样间隔；
% h为窗函数;
function st_ft=STFT(X,t_interval,fft_number,h)
www.eeworm.com/read/481130/6659454
m stft.m
%x=exp(j*pi*k*t.^2)
clear,clc,close all
figure(1)
k=4;T=5;
fc=k*T;
fs=3*fc;
Ts=1/fs;
N=T/Ts;
x=zeros(1,N);
t=0:N-1;
x=exp(j*k*pi*(t*Ts).^2);
% x=awgn(x,-3,'measured');
subplot(221)
plot(t
www.eeworm.com/read/479088/6699316
m stft.m
function x = stft(sig,fftlength,winlength,tr)
% STFT(input signal, fftlength, window length, time resolution)
%
% This routine can use hamming, rectangular or any other
% type of analysis window
www.eeworm.com/read/129404/14247872
m stft.m
function y = STFT(x, sampling_rate, window, window_length, step_dist, padding)
%
% y = STFT(x, sampling_rate, window, window_length, step_dist, padding)
%
% STFT produces a TF image of "x".
% The o
www.eeworm.com/read/211567/15177703
m stft.m
function [T,F,SP] = STFT(D,M,fm);
% y: input signal
% D: the data matrix: D(:,1)=t; D(:,2)=y;
% M: the lenght of the FT window
% [0 fm] The Frequency range for the signal
% SP: the spectogram (
www.eeworm.com/read/210588/15195515
c stft.c
/* EXISTS AN INTERFACE PROGRAM TO MATLAB : STFTMEX.C *
*====================================================================*
* Name of the function : stft.c (void)