Hi Shaunak,
Creating a GUI for your application using MATLAB App Desinger should be a straight-forward process, using the UI components such as "Button" and "Slider", and employing their callback functions to execute relevant code.
I will try to give you a few pointers on the available MATLAB functions that could be of help in implementing this use-case:
1. You can use the "audioread" and "sound" functions to read an audio file and play it, as explained in the documentation below:
Read audio file: https://www.mathworks.com/help/matlab/ref/audioread.html
2. Ideally, you should save the survey responses in a "struct" object with fields {"participant_name", "audio1_rating", "audio2_rating", "audio3_rating"}, assuming you have 3 audio files to rate.
Then you can append the struct result for the current participant in an existing table of all the ratings received. The "struct2table" function can help with converting "struct" to a "table" which can then be appended to an existing table.
Same is illustrtated in the code snippet below:
% Button pushed function: SubmitButton
function SubmitButtonPushed(app, event)
% Collect the ratings and participant name
app.Ratings.participant_name = app.ParticipantName.Value;
app.Ratings.audio1_rating = app.RatingSlider1.Value;
app.Ratings.audio2_rating = app.RatingSlider2.Value;
app.Ratings.audio3_rating = app.RatingSlider3.Value;
% Convert struct to table
newEntry = struct2table(app.Ratings);
% Append to existing table
if isempty(app.RatingsTable)
app.RatingsTable = newEntry;
else
app.RatingsTable = [app.RatingsTable; newEntry];
end
% Save to Excel file
writetable(app.RatingsTable, 'SurveyResponses.xlsx');
end
This can be appended/modified with any other implementation to save the results in an online location, such as a REST server.
3. If you wish to send the response data to a REST server thorugh a POST request, the "webwrite" function can be helpful for the same.
I hope these pointers help you get started!
