MATLAB: Do the BEEP or ERROR functions in MATLAB not produce a beep sound

MATLAB

When I use the ERROR or BEEP functions MATLAB does not produce my computer's default beep sound.

Best Answer

The BEEP and ERROR functions produce the default system sound. If you have configured Windows not to produce any sound, BEEP and ERROR will be silent.

Please go to Control Panel->Sound and Audio Devices->Sound and ensure that “Windows Default Beep” sound is enabled.

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This bug has been fixed in Release 14 Service Pack 2 (R14SP2). For previous releases, please read below for any possible workarounds:

This bug has been fixed for Release 14 SP1 (R14SP1). For previous releases, please read below for any possible workarounds:

This problem has been fixed in MATLAB 7.0.1 (R14SP1). If you are using a previous version, read the following:

This has been verified as a bug in MATLAB in the way that the BEEP command is executed on certain operating systems.

If you are not able to hear the system beep when you use the beep command, the following solution can be used to make a sound on your machine.

NOTE: This will not solve the problem of other functions that use BEEP, but it will allow you to have sound in your own applications.

The workaround involves creating another function (called, for example, beep2) which will play a sine wave.

function beep2
% Play a sine wave
res = 22050;
len = 0.5 * res;
hz = 220;
sound( sin( hz*(2*pi*(0:len)/res) ), res);

Best Answer

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