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Enhancing audio
Enter edit mode
Click the Edit button next to the file your file and switch to the Audio tab or select Audio in the Tools tab.
![](images/drex_audio_enhancements_custom.png)
Adjust the volume
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To change the volume of the whole file, drag the Volume slider to the necessary level, where 100% is the original volume.
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If parts of the file are too quiet, select the Normalize volume option to make them louder.
![](images/drex_audio_enhancements_custom_2.png)
Remove noise
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Select the Remove noise option.
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Drag the Noise level slider to set the amount of noise you can hear in the file.
![](images/drex_audio_enhancements_custom_3.png)
Exit edit mode
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When you're finished, click Apply to accept the changes. To fix the volume for all the files in the list, select Apply to all files.
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If you don't need any further editing, click Done to close the editing window.
![](images/drex_audio_enhancements_custom_4.png)