How to Amplify Audio With Audacity

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Audacity is a free and easy-to-use software application that can turn any PC into a full-fledged recording studio. The program gives you the ability to add various special effects to an existing audio, including fade in, fade out and amplification. Amplifying audio on Audacity is a straightforward task that can be accomplished in just a few minutes. The procedure involves trial and error to achieve the best possible result.

Things You'll Need

  • Current version of Audacity (installed)
  • Audio file to be edited
  • Open Audacity. Click "File" from the top menu bar and choose "Import" from the context menu. Browse to the song or other audio file that you want to amplify.

  • Click on the "Selection" tool from the top menu bar. Select the portion of the audio file that you want to edit by clicking at the starting point and dragging with your mouse.

  • Click "Effect" on the top menu bar and choose "Amplify." This will amp up or de-amp the selected audio. If you don't like the result or you change your mind and want to amplify some other portion of the audio, click the "Undo" button.

  • Watch for a pop-up screen to open. This dialogue box is where you select how much you want to amp up or amp down your audio. Experiment with the settings and preview your edited file before you click "OK" to finalize and save your selection. Click the small box to "Allow Clipping" if you want to apply this effect.

  • Look at the waveform displayed on your screen after you've finalized your selections. The waveform should look slightly larger, depending on how much you amped up or down.

  • Save your work when you are satisfied with the result. In Audacity, you click "File" and then select "Export" from the context menu to save and finalize a project. Choose the destination folder for the output file.

Tips & Warnings

  • You can always cancel a change by clicking the "Undo" button.
  • When you exit Audacity, you will be prompted to save your project. If you have already done this, it's not necessary to save your work again.
  • Don't amplify your audio too high or to low. Excessive amplification can result in blown speakers, injured eardrums and decreased audio quality.
  • Photo Credit Jupiterimages/Photos.com/Getty Images
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