How to Make a Robot Voice in Audacity

Even though humanity has yet to build a robot that can carry on a conversation with a human, we all know what a robot's voice sounds like: tinny, droning, with more than a hint of mechanical buzz in the background. Using the open-source sound editor Audacity, it is easy to make a recorded sample sound like a robot.

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Talking like a robot has never been easier.

Step

Record or open the voice sample you wish to alter.

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Select the section of the recording you want to alter by clicking and dragging along the track window.

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Select "Delay" from the effects window.

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Set the "Decay" slider to around 10. This setting determines how quickly the echoes in the voice will drop in volume. A lower setting will result in a shorter, more buzzing echo, while a higher setting will be more vague and foggy.

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Set the delay to near the lowest setting, preferably 0.01. This will cause the echoes to overlap one another very closely, causing a highly compressed set of echoes.

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Change the number of echoes to a value between 20 and 50. More echoes will provide a harsher buzz to your robot voice.

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Click "Okay." Listen to your sample.

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Hold down "Ctrl+R" to apply the filter again. You will probably need to repeat this step at least a dozen times to get your voice sufficiently robotic.