How can I record an audio from a tuggle button in the GUIDE ?

I have to make a voice recorder using GUIDE.

I don´t know if I can put the "audiorecorder object" in the handles, the code below is in the CallBack function of tuggle button , when I push the toggle button it gives me an error, it says "record is empty". I use "getaudiodata" because I also have to modify the voice. I need that record the voice, stop the record and save that in a vector.

handles.x = get(hObject,'Value')
handles.audio = audiorecorder(44100,16,1);
if handles.x == 1
    record(handles.audio);
elseif handles.x == 0
    stop(handles.audio);  
    y = getaudiodata(handles.audio);
    audiowrite('Voz.wav',y,44100)
end
guidata(hObject, handles)

This is the error...

Error using audiorecorder/getaudiodata (line
765)
Recorder is empty.

Error in ProyectoS>togglebutton1_Callback
(line 136)
    y = getaudiodata(handles.audio);

Answer 1

[Geoff Hayes]

Samuel - I think that the problem is that you are creating a new audio player each time the callback is called:

handles.audio = audiorecorder(44100,16,1);  % <--- creating this again
if handles.x == 1
    record(handles.audio);
elseif handles.x == 0

Instead, try creating the recorder only if the button is toggled on:

if get(hObject,'Value') == 1
    handles.audio = audiorecorder(44100,16,1);
    record(handles.audio);
elseif get(hObject,'Value') == 0
    stop(handles.audio);  
    y = getaudiodata(handles.audio);
    audiowrite('Voz.wav',y,44100)
end
guidata(hObject, handles)

I removed the handles.x since that isn't strictly needed (unless some other callback is interested in this information).