第二个按钮怎么设置可以播放第一个按钮打开的文件
时间: 2023-08-05 10:05:08 浏览: 51
要使第二个按钮能够播放第一个按钮打开的文件,你可以在 `pushbutton1_Callback` 函数中保存打开的音频数据和采样率到 `handles` 结构中。然后,在 `pushbutton2_Callback` 函数中,你可以从 `handles` 结构中获取音频数据和采样率,并使用 `sound` 函数播放音频。
下面是修改后的代码示例:
```matlab
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
[filename, pathname] = uigetfile('*.wav', 'Select WAV File');
if isequal(filename, 0)
disp('User canceled file selection');
return;
end
filepath = fullfile(pathname, filename);
[audioData, sampleRate] = audioread(filepath);
% Save audio data and sample rate to handles structure
handles.audioData = audioData;
handles.sampleRate = sampleRate;
guidata(hObject, handles); % Update handles structure
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Check if audio data and sample rate are available in handles structure
if isfield(handles, 'audioData') && isfield(handles, 'sampleRate')
% Play the audio using sound function
sound(handles.audioData, handles.sampleRate);
else
disp('No audio data available');
end
```
这样,当你按下第一个按钮打开一个 WAV 文件后,第二个按钮将能够播放该文件中的音频数据。
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