audioplayer() not enough input arguments

2024 3 5
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更新时间：2024 3 5
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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.

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Stephen23
Stephen23 2024-3-5
"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
Hank 2024-3-5
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);

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回答（1 个）

Cris LaPierre
Cris LaPierre 2024-3-5

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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

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Hank
Hank 2024-3-5
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
Cris LaPierre 2024-3-5
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

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