Equalizer undefined variable problem

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function play_Callback(hObject, eventdata, handles)
% hObject handle to play (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
global stop file_name C;
stop=1;
equalizer_play();
function equalizer_play()
global stop file_name C;
[x,Fs]= audioread(file_name);
[a,b]=coef();
l_bucata=2*Fs;
Nb=round(length(x)/l_bucata);
y=0;
for i=1:floor(Nb)
bucata=x((i-1)*l_bucata+1:i*l_bucata);
for k=1:5
y=y+filter(10^(C(k)/20)*b{k},a{k},bucata);
if(stop==0)
break;
end
end
wavplay(y,Fs,'async');
y=0;
if(stop==0)
break;
end
end
> MyEqualizer
Undefined function or variable 'wavplay'.
Error in MyEqualizer>equalizer_play (line 507)
wavplay(y,Fs,'async');
Error in MyEqualizer>play_Callback (line 490)
equalizer_play();
Error in gui_mainfcn (line 95)
feval(varargin{:});
Error in MyEqualizer (line 42)
gui_mainfcn(gui_State, varargin{:});
Error while evaluating UIControl Callback.
What is the solution for such error ?

Accepted Answer

Geoff Hayes
Geoff Hayes on 24 Feb 2019
Hassan - is code referencing wavplay from the File Exchange (the inputs seem to match)? If so, have you downloaded the code and added it to the MATLAB Search Path?
  1 Comment
Hassan Bosha
Hassan Bosha on 24 Feb 2019
i added the folder to the path and that's the issue Untitled.png

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More Answers (1)

Walter Roberson
Walter Roberson on 24 Feb 2019
R2012a was the last release that had wavplay().
  4 Comments
Hassan Bosha
Hassan Bosha on 24 Feb 2019
Edited: Hassan Bosha on 24 Feb 2019
a little bit help with the code ?
will that wavplay of the file exchange work after changing it to audioplay ?
Walter Roberson
Walter Roberson on 25 Feb 2019
You asked this as a separate question and I replied there.

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