What is Audacity?
Audacity is a free, open-source audio editing program that works on Windows, macOS and Linux. You can use it to:
- Cut and trim audio
- Remove noise
- Adjust volume
- Add effects (fade in/out, echo, etc.)
- Export audio in common formats (MP3, WAV)
Getting started
Open Audacity
Click on the Audacity icon to open Audacity. You’ll see a blank project with a waveform area.
Import an audio file
To open an existing audio file:
- Click File > Import > Audio
- Or, drag and drop an audio file into Audacity
You’ll see the audio displayed as a waveform.
Understanding the interface (a quick tour)
- Waveform: The visual representation of sound
- Timeline (top): Shows time in seconds/minutes
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Playback Controls:
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▶ Play
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⏸ Pause
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⏹ Stop
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- Selection Tool (I-beam icon): Used to highlight audio
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Tracks Panel (left): Shows track name, mute/solo, volume
Select audio
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Choose the Selection Tool (default tool).
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Click and drag over part of the waveform.
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The highlighted area is your selection.
Tip: Press Ctrl + A (Windows) or Cmd + A (Mac) to select all audio.
Cut, Delete and Trim audio
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Cut: Remove audio and copy it
Edit > Cut or Ctrl/Cmd + X -
Delete: Remove audio completely
Press Delete -
Trim: Keep only the selected part
Edit > Remove Special > Trim Audio
Move audio
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Select the Time Shift Tool (↔ icon).
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Click and drag the audio left or right on the timeline.
Adjust volume
Option A: Amplify
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Select audio
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Click Effect > Volume and Compression >Amplify
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Adjust the level and click OK
Option B: Track Volume Slider
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Use the volume slider on the left side of the track for quick changes
Fade In and Fade Out
- Select the beginning of the audio > Effect > Fade In
- Select the end of the audio > Effect > Fade Out
Great for music and smooth transitions.
Remove background noise
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Select a section with only background noise
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Go to Effect > Noise Reduction > Get Noise Profile
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Select the entire track
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Go back to Noise Reduction
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Click OK
Tip: Don’t overdo it. Too much noise reduction can make audio sound robotic.
Add simple effects
Some common beginner effects:
- Normalize – balances volume
- Echo – adds repeating sound
- Reverb – makes audio sound like it’s in a room
Find them under Effect in the top menu.
Export your audio
When you’re finished:
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Click File > Export
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Choose a format (MP3, WAV, etc.)
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Name your file
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Click Save
Save your project
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Use File > Save Project
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This saves an Audacity project file (.aup3) so you can edit later
Note: Project files are not playable audio - always export when finished.
Helpful keyboard shortcuts
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Space – Play / Stop
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Ctrl/Cmd + Z – Undo
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Ctrl/Cmd + Y – Redo
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Ctrl/Cmd + A – Select all
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Delete – Remove selected audio


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