How to play randomly the selected song from list song box?
MATLAB: How to play random song from list box in GUI Matlab
matlab gui
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If you are using the audioplayer to play the music, you can always assign a periodic timer to the player so that every one tenth of a second (or whatever your period is) you can update the slider position. For example, suppose we have a GUI with an axes, a push button, and a slider. The push button callback would start the audio and update the axes with the sample data, and could be written something like
% --- Executes on button press in pushbutton1.
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)
load handel;handles.player = audioplayer(y, Fs);% save all data to the handles object
handles.y = y';handles.Fs = Fs;handles.timeSec = length(y)/Fs;handles.atSample = 0;% assign a periodic timer to fire during playback
set(handles.player,'TimerFcn',{@timerCallback,handles.figure1}, 'TimerPeriod', 0.1);% save the updated handles object
guidata(hObject,handles);% reset the axes and set some properties
cla(handles.axes1);hold(handles.axes1,'on');xlim(handles.axes1,[1 length(y)]);% play the music
play(handles.player);We simply initialize the player, assign a timer function, save the updated handles object, and play the audio. The timer callback would look something like
function timerCallback(hObject, event, hFig)% get the handles structure
handles = guidata(hFig);% determine the current sample
currSample = get(hObject,'CurrentSample');% get all of the sound data
data = handles.y(handles.atSample+1:currSample);% plot the most recent set of data
plot(handles.axes1,handles.atSample+1:currSample,data);% update the handles object
handles.atSample = currSample;guidata(hFig,handles);% update the slider
if currSample > 1 sliderVal = min(1.0,currSample/length(handles.y)); set(handles.slider1,'Value',sliderVal);endGiven that our timer period is 0.1 seconds, then whenever the timer callback fires we update the axes with the sample data, and update the position of the slider. (We use a percentage of the "read" samples to determine its position.)
See the attached GUI which implements the above.
Hi,
There is an option to select multiple items in a list box. By default, it is not selected.
Here’s the option for Multiselect in Interactivity under Inspector.
To test, consider a sample case where to display all the items selected in a UI table. However, the order of items in UI table depends on the order of selection from list box.
Hope this helps.
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