audioplayer() not enough input arguments

I am having an issue with using the audioplayer() function, where it always returns me with the error not enough input arguments. Here is what I believe to be the relevant code snippets:

% Button pushed function: UploadButton
function UploadButtonPushed(app, event)
    [filename,filepath] =uigetfile({'*.wav'}, 'Select File to Open');
    app.fullname = [filepath, filename];

This is for uploading a .wav file into the program.

I then attempt to access this file later in the program to play it:

% Button pushed function: PlayButton
function PlayButtonPushed(app, event)
    [audioSound, sampleRate] = audioread(app.fullname);
    app.sound = audioplayer(audioSound, sampleRate);
    play(app.sound);   

However, this invariably results in the not enough inputs error mentioned.

I have checked the variables, and audioSound is an array of doubles and sampleRate is a double, so I am not sure what I am doing wrong.

[Stephen23]

"However, this invariably results in the not enough inputs error mentioned."

Mentioning an error is not a helpful as showing us the complete error message. This means all of the red text.

[Hank]

Here are the two error messages:

Matlab:

Error using audioplayer

Not enough input arguments.

Error in appbaseAudioWorksHchenCopy/PlayButtonPushed (line 84)

app.sound = audioplayer(audioSound, sampleRate);

Error in matlab.apps.AppBase>@(source,event)executeCallback(ams,app,callback,requiresEventData,event) (line 62)

newCallback = @(source, event)executeCallback(ams, ...

Error while evaluating Button PrivateButtonPushedFcn.

and Appdesigner:

Error using audioplayer

Not enough input arguments.

Error in appbaseAudioWorksHchenCopy/PlayButtonPushed (line 84)

app.sound = audioplayer(audioSound, sampleRate);

Answer 1

[Cris LaPierre]

See this Answer for a potential fix, which is that app.sound might need to be declared as a public property of the app.

https://www.mathworks.com/matlabcentral/answers/814045-matlab-app-designer-not-playing-sounds

[Hank]

I have added the segment

    
    properties (Access = public)
        sound % Sound of Sample
        fullname %file
      
    end
    

However, the error persists. I also tried the demo example attached by Subhadeep Koley, but I experienced the same error, giving me this message in matlab:

Error using audioplayer

Not enough input arguments.

Error in appExample/ClicktoplayButtonPushed (line 25)

app.player = audioplayer(app.S.y, app.S.Fs);

Error in matlab.apps.AppBase>@(source,event)executeCallback(ams,app,callback,requiresEventData,event) (line 62)

newCallback = @(source, event)executeCallback(ams, ...

Error while evaluating Button PrivateButtonPushedFcn.

And this one in Appdesigner:

Error using audioplayer

Not enough input arguments.

Error in appExample/ClicktoplayButtonPushed (line 25)

app.player = audioplayer(app.S.y, app.S.Fs);

[Cris LaPierre]

Your original code works for me in R2023b on a Win11 machine. Perhaps the issue is with the wav file you are uploading. Try creating one of your own.

load handel.mat
audiowrite("handel.wav",y,Fs)
clear y Fs