MATLAB Answers

Adding echo and flanger

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Maitha Ahmad
Maitha Ahmad on 2 May 2020
Answered: Ajay Pattassery on 5 May 2020
through the online version of MATLAB i tryed to run the following code but there are errors
how can i solve it ?
load handel.mat
filename = 'handel.wav'
audiowrite(filename,y,Fs);
duration = 30; % in seconds
audioDelayEffectsExampleApp('echo',duration);
duration = 30; % in seconds
audioDelayEffectsExampleApp('chorus',duration);
duration = 30; % in seconds
audioDelayEffectsExampleApp('flanger',duration);
open_system('audiodelaybasedeffects')

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Geoff Hayes
Geoff Hayes on 3 May 2020
Maitha - what are the errors? There are some MATLAB Online limitations that might be related to the audio functions that you are trying to execute.

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Answers (1)

Ajay Pattassery
Ajay Pattassery on 5 May 2020
I mostly guess the following would have been the error.
Error using audioDeviceWriter/validatePropertiesImpl
No audio output device detected
Error in audioDeviceWriter/play
The app audioDelayEffectsExampleApp uses audioDeviceWriter to play the sound to the sound card. It belongs to Audio Toolbox and currently it is not supported in MATLAB Online.
I suggest you using a normal installed MATLAB version.Refer the following site for Installing MATLAB if you already not.

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