写一个可以将输入的任意波形分解并再现的matlab代码,要求有交互界面
时间: 2023-06-17 18:04:46 浏览: 185
这是一个简单的matlab代码,可以将输入的任意波形进行小波分解并再现。同时,也可以通过交互式界面进行操作。
```matlab
% Wavelet Decomposition and Reconstruction
% Initialize GUI
f = figure('Visible','off','Position',[360,500,450,285]);
% Initialize Components
load_button = uicontrol('Style','pushbutton','String','Load Signal',...
'Position',[315,220,70,25],...
'Callback',@load_callback);
decomp_button = uicontrol('Style','pushbutton','String','Decompose',...
'Position',[315,180,70,25],...
'Callback',@decomp_callback);
recon_button = uicontrol('Style','pushbutton','String','Reconstruct',...
'Position',[315,140,70,25],...
'Callback',@recon_callback);
exit_button = uicontrol('Style','pushbutton','String','Exit',...
'Position',[315,100,70,25],...
'Callback',@exit_callback);
axes_panel = uipanel('Position',[.05 .05 .65 .9]);
axes_wavelet = axes('Parent',axes_panel,'Position',[.1 .2 .85 .7]);
axes_signal = axes('Parent',axes_panel,'Position',[.1 .05 .85 .1]);
% Initialize Variables
signal = [];
wavelet = '';
level = 0;
coefficients = [];
% Make GUI Visible
f.Visible = 'on';
% Callback Functions
function load_callback(source,eventdata)
[filename,filepath] = uigetfile({'*.wav','Waveform Files (*.wav)'});
if isequal(filename,0) || isequal(filepath,0)
return
else
path = fullfile(filepath,filename);
[signal,fs] = audioread(path);
plot(axes_signal,signal);
xlabel(axes_signal,'Time (s)');
ylabel(axes_signal,'Amplitude');
title(axes_signal,'Input Signal');
end
end
function decomp_callback(source,eventdata)
if isempty(signal)
return
else
wavelet = 'db4';
level = 5;
[coefficients,~] = wavedec(signal,level,wavelet);
plot(axes_wavelet,coefficients);
xlabel(axes_wavelet,'Coefficient Index');
ylabel(axes_wavelet,'Coefficient Value');
title(axes_wavelet,'Wavelet Coefficients');
end
end
function recon_callback(source,eventdata)
if isempty(coefficients)
return
else
output_signal = waverec(coefficients,level,wavelet);
plot(axes_signal,output_signal);
xlabel(axes_signal,'Time (s)');
ylabel(axes_signal,'Amplitude');
title(axes_signal,'Reconstructed Signal');
end
end
function exit_callback(source,eventdata)
close all
end
```
该代码包含四个按钮和两个图形框。第一个按钮用于加载输入信号,第二个按钮用于进行小波分解,第三个按钮用于进行重构,第四个按钮用于退出程序。第一个图形框用于显示输入信号和重构信号,第二个图形框用于显示小波系数。
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