How to Use Audacity: The Beginner's Guide (First Recording, Editing, and a Clean MP3 Export)

CodexFuse Team · 2026-10-28T08:30:27.742Z · 16 min read

Audacity 4.0.1 is free, open-source, and easier than it looks. Record your first track, cut the mistakes, remove background noise, normalize, and export a clean MP3 — the complete beginner's system in one guide.

Audacity is the free, open-source audio editor that podcasters, students, and voiceover beginners reach for first, and learning how to use Audacity takes about an hour, not a weekend. This guide walks you through the complete first-recording system on the current version: setting up your microphone, recording your first track, cutting out the mistakes, removing background noise, leveling the volume, and exporting a clean MP3 you can actually publish.

No sign-up, no paid plugins, and no prior audio experience are needed. If you also record video, our OBS Studio guide covers the screen-and-camera side; here, the audio is the whole job.

How Do You Use Audacity?

Using Audacity means following one simple workflow: set up your microphone, record, cut out the mistakes, clean up the background noise, set the final volume, and export. Audacity is a free, open-source, cross-platform audio editor for Windows, macOS, and Linux, and the whole process below works on the current version, Audacity 4.0.1.

1. Download Audacity from audacityteam.org and plug your USB microphone in before you open the program, so Audacity can see it.
2. Click Audio Setup in the toolbar, pick your microphone as the recording device, and choose mono for voice or stereo for music.
3. Press the red Record button (or R), leave a few seconds of silence for room tone, then speak. Press Stop when you finish.
4. Drag across the waveform to select mistakes, then press Delete to cut them, Ctrl+T to trim, or S to split a clip in Audacity 4.0.
5. Select a second of pure room tone, open Effect > Noise Reduction > Get Noise Profile, select the whole track, and apply the effect.
6. Select all and run Effect > Normalize to bring the loudest peak to -1 dB.
7. Go to File > Export Audio, choose Export to computer, pick MP3 at 192 kbps, and save your finished file.

What Is Audacity — and What It Is Not For

Audacity is a free, open-source, cross-platform program for recording and editing sound, and it runs on Windows, macOS, and Linux. The current version is 4.0.1, checked on the official Audacity download page on October 28, 2026. Version 4.0 arrived on September 3, 2026, with the interface rebuilt on the Qt6 toolkit, and version 4.0.1 followed on September 30, 2026.

Audacity is at its best for voice work. Podcasters record and edit whole episodes in it, students capture lectures and interviews, voiceover beginners record their first demos, and audiobook volunteers use it — the LibriVox project recommends Audacity to its volunteers. If your job is one voice, one microphone, and a clean final file, Audacity is the right tool, and it costs nothing.

It is not a multi-track music studio. Audacity records two channels at a time, left and right, so it is not the tool for recording a full band live or layering many instruments at once.

For that kind of work, a digital audio workstation built for multi-track recording is the better choice. Knowing this before you start saves you from fighting the tool for a job it was never built to do.

How to Record in Audacity: Your First Track

Recording your first track in Audacity takes five minutes once the microphone is set up correctly. The setup is the part most beginners rush, and it is the part that causes most first-recording problems.

Step 1: Install Audacity and plug the microphone in first

Download Audacity from audacityteam.org and install it for your system. Plug a USB microphone in before you start Audacity, because Audacity only lists the devices it can see when it launches. If you plug the microphone in after opening the program, close Audacity and open it again.

Step 2: Pick the right recording device

Click the Audio Setup button in the toolbar and choose your microphone as the recording device. Set the channels to mono for voice recording — one voice, one track — and stereo only if you are recording music or a two-channel source. If the wrong device is selected, you will record from your laptop microphone instead of the one you bought, which is the single most common beginner mistake.

Step 3: Record, pause, and stop

Click the big red Record button, or press R, and start talking. In Audacity 4.0, recording can start anywhere on the timeline and creates a new clip at that position, which is a change from Audacity 3.x, where recording always started from the end of the existing audio.

Press the Pause button to gather your thoughts, and press the square Stop button when you are done. Press Play to listen back.

If you only need a quick recording and do not want to install anything yet, an online voice recorder captures audio right in the browser — but for editing, Audacity is the tool.

Step 4: Leave room tone and clap your mistakes

Wait five to ten seconds before you start speaking. That quiet stretch is your room tone, and you need it later for noise reduction — Audacity has to hear your room without your voice in it.

When you stumble over a sentence, clap once or make a loud noise. The clap leaves a visible spike in the waveform, so you can find the mistake in seconds when you come back to edit instead of hunting through the whole recording.

Step 5: Save the project before you edit anything

Go to File > Save Project > Save Project As and save the project file before you touch a single edit. Audacity edits are destructive: once you cut a section, save, and close the program, that audio is gone. Saving the project first gives you a way back, and it is the habit that separates a recoverable mistake from a lost recording.

How to Edit Audio in Audacity: Cut, Trim, and Split

Editing audio in Audacity comes down to three moves — cut, trim, and split — and beginners get into trouble by mixing them up.

Cutting removes a section and closes the gap. Trimming keeps only the section you selected and deletes everything else. Splitting breaks a track into two clips without deleting anything, so you can move a segment or make room for music.

To cut, click and drag across the waveform to highlight the section, then press Delete. To trim, highlight the part you want to keep and press Ctrl+T.

To split in Audacity 4.0, press S and click anywhere on the waveform; the track breaks into two clips at that point, and you can drag either clip by its header. In Audacity 3.x, the same split lives under Edit > Audio Clips > Split, or Ctrl+I.

Back up before you start. Because Audacity edits are destructive, make a safety copy first: either save the project under a new name, or duplicate the track with Ctrl+D and mute the original so you always have the untouched recording underneath.

If you edit a project with two tracks — say, voice and background music — remember that cutting only the voice track shifts it left and throws it out of sync with the music. Select both tracks before you delete, or use Silence (Ctrl+L) instead, which keeps the total length exactly the same.

Two small habits make cuts sound clean. First, cut at zero crossings: press Z before you delete, and Audacity nudges your selection edges to the nearest point where the waveform crosses the center line, which removes the click that a sudden cut creates. Second, zoom in before you cut — hold Ctrl and scroll the mouse wheel — so you can see the individual waves and avoid snipping the start of a word.

For a one-off trim of a finished file, a browser-based audio trimmer is faster than opening a full editor. But when you are editing a whole recording, Audacity's selection tools and shortcuts are the faster system.

How to Remove Background Noise in Audacity

Noise Reduction in Audacity removes constant background noise — fan hum, room hiss, electrical buzz — in two steps, and the first step is the one beginners skip. Audacity cannot guess what your noise sounds like, so you have to show it a sample first.

1. Find one or two seconds in your recording where nobody is speaking and only the room noise is audible. The official Audacity feature page says the sample should be at least 0.5 seconds long; longer is better.
2. Drag across that noise-only section to select it, then open Effect > Noise Reduction and click Get Noise Profile. The window closes, which is normal — Audacity has now memorized the noise.
3. Select the audio you want to clean. Press Ctrl+A to select the whole track.
4. Open Effect > Noise Reduction again and click OK to apply it.

Before you click OK, check the settings. The Noise Reduction slider controls how much of the identified noise is removed, and values between 6 and 24 dB work well for most recordings.

Start low and increase until the noise stops distracting you. Use the Preview button to hear the result before you commit: if the voice starts sounding watery or warbly, you have pushed the reduction too far, so dial it back and try again.

Know the limits. Noise Reduction works on constant noise, and it will not work well on talking or music in the background, traffic, or a room that changes sound mid-recording.

The noise profile is also not kept when you close Audacity — the next time you open the program, you capture a new profile. And never let a breath or the tail of a word sneak into your noise sample: Audacity will treat that sound as noise and eat away at your voice.

How to Make Your Recording Louder and Even

Most first recordings are too quiet, and a few loud laughs sit far above the rest. Two effects fix that, and the order matters: clean the noise first, then set the level.

Normalize sets the loudest peak in your track to a target you choose. Select the whole track with Ctrl+A, open Effect > Normalize, and set the peak to -1 dB, which leaves a small safety margin below the clipping point.

The Amplify effect does the same job with an exact number: select the track, open Effect > Amplify, and enter a value such as -3 dB or -6 dB to lower the volume, or a positive value to raise it. For spoken-word work, the LibriVox audiobook project aims for volume close to 89 dB using ReplayGain, which keeps episodes in a series sounding consistent from one to the next.

If your voice still jumps between quiet and loud, the Compressor effect evens it out by gently lowering the loudest parts, after which you normalize again to bring the whole track back up. Audacity 4.0 rebuilt both Noise Reduction and Compressor with better previews, so you can hear each change before you commit to it.

Audacity 4.0: What Is New — and What Is Still Missing

Audacity 4.0 is the biggest change to the program in years, and it is worth knowing what changed before you follow a tutorial written for the old version. The interface was rebuilt on the Qt6 toolkit, which brings native high-resolution display support and a cleaner, more modern look. Editing is now clip-based: clips can be selected by clicking their headers, several clips can be edited together, and clips can be grouped so they stay together when you move or copy them.

The program ships with three workspaces — Modern, Classic, and Music — that you can switch between from the top-right corner. Modern is the default, with a seconds-based timeline.

Classic keeps a layout familiar to Audacity 3.x users, and Music uses a bars-and-beats ruler with a 120 BPM default. The export workflow is also new: File > Export Audio offers sharing directly to audio.com or exporting to your computer, where you pick the format, channels, and sample rate.

Some Audacity 3.x features did not make it into 4.0. MIDI tracks, the Mixer, the Macro Manager, VAMP and LADSPA plugin hosting, and Play-at-speed are all missing, and the developers have said they will return without giving a timeline.

If you rely on batch processing or MIDI, stay on Audacity 3.7.9, which is still maintained. One more detail: Audacity 4.0 opens .aup3 project files from version 3.x and converts them to the new .aup4 format, but the conversion only goes one way — once a project is .aup4, it cannot be saved back to .aup3.

How to Export MP3 From Audacity

Exporting is the last step, and it is also the step where beginners lose quality by picking the wrong format. Your Audacity project file is not an audio file — it is the editing session — so you must export to get a file you can share or upload.

Go to File > Export Audio and choose Export to computer. Pick MP3 as the format, set the channels to mono for voice or stereo for music, and choose the bitrate.

For podcast distribution, MP3 at 192 kbps is the standard. For archival copies or audio you plan to edit again later, export as WAV or FLAC instead, because those formats keep the full quality.

MP3 export is built into Audacity; you only need the separate FFmpeg library for extra formats such as WMA or AC3.

The sizes in this table are computed from the bitrates: one minute at 192 kbps is 192,000 bits per second times 60 seconds divided by 8, which is 1,440,000 bytes, or about 1.44 MB. A 30-minute episode at the same setting is thirty times that, about 43.2 MB.

The WAV row is computed the same way from 44,100 samples per second times 16 bits times two channels. Use the table to pick your setting before you export: 192 kbps keeps a podcast small enough to stream easily, while WAV is the right choice when you want to keep every detail.

If you already have a finished WAV and only need an MP3, an audio converter does the job without opening Audacity at all. And if your audio is going into a video, our CapCut beginner's guide picks up where this one ends, with captions and a clean video export.

10 Audacity Shortcuts Worth Memorizing

Audacity rewards the keyboard. These ten shortcuts cover almost everything a beginner does in a session, and they are the same on Windows and Mac except for Ctrl versus Cmd.

One warning about Undo: Audacity clears your undo history when you close the program, so press Ctrl+Z while the session is still open, and save the project file if you are not finished. A saved .aup4 project keeps your work; an exported MP3 does not let you undo anything.

5 Beginner Mistakes to Avoid

Most Audacity frustration comes from five avoidable mistakes. Check each of these before you press Record, and the rest of the process is straightforward.

• Recording with the wrong device selected, so you capture laptop-microphone audio instead of your good microphone.
• Skipping the backup, so one bad cut costs you the recording.
• Cutting without pressing Z first, so every edit clicks.
• Capturing a noise profile that includes your voice, so Noise Reduction eats your words.
• Exporting only the MP3 and closing without saving the project, so you can never go back and fix a mistake.

Sources

• Audacity — Download Audacity — current version 4.0.1, checked October 28, 2026.
• FOSSLinux — Audacity 4.0: Beginner's Guide to Audio Editing on Linux — 4.0 released September 3, 2026; Qt6 rebuild; clip-based editing; workspaces; missing features; export workflow; MP3 at 192 kbps as the podcast standard.
• Make Tech Easier — The Beginner's Guide to Recording Audio in Audacity (updated October 10, 2026) — USB microphone rule, clap-marker trick, five to ten seconds of room tone, LibriVox and the 89 dB ReplayGain target.
• Hollyland — How to Cut and Trim Audio in Audacity (updated October 22, 2026) — cut, trim, and split definitions; destructive editing and the backup rule; zero crossings; silence; fades.
• Audacity — Noise Reduction — two-step process, 0.5-second minimum sample, 6 to 24 dB settings range.
• Audacity Manual — Noise Reduction — constant-noise limits, noise profile not retained after closing.
• UpdateStar News — Audacity 4: Clean Up Muddy Voice Recordings in Minutes — version 4.0.1 followed on September 30, 2026.
• UnitConversion.io — How to Lower Audio Volume Without Losing Quality: Audacity vs. Adobe Audition — Amplify with negative values, Normalize peak targets of -1 dB and -3 dB.

Frequently Asked Questions

Is Audacity really free?

Yes. Audacity is free, open-source software for Windows, macOS, and Linux, and there is no paid version, no account, and no sign-up. You download it from audacityteam.org and use the full editor, including recording, effects, and MP3 export.

How do I record in Audacity?

Plug your microphone in before opening Audacity, click Audio Setup and pick the microphone, then press the red Record button or R. Leave a few seconds of silence at the start for room tone, speak, and press Stop when you finish. Press Play to listen back before you edit.

How do I export MP3 from Audacity?

Go to File > Export Audio, choose Export to computer, pick MP3 as the format, and set the bitrate. Use 192 kbps for podcasts and spoken word, and 320 kbps for music. Save the project file too, because the MP3 alone cannot be edited the same way later.

Can Audacity remove background noise?

Yes, for constant background noise such as fan hum, room hiss, or electrical buzz. Select a second of noise with no voice in it, open Effect > Noise Reduction, click Get Noise Profile, select the whole track, and apply the effect. It will not remove talking, music, or traffic in the background.

Should I use Audacity 4.0 or stay on Audacity 3.x?

Use Audacity 4.0.1 if you want the rebuilt interface, clip-based editing, and workspaces. Stay on Audacity 3.7.9 if you depend on MIDI tracks, the Mixer, the Macro Manager, or VAMP and LADSPA plugins, because those features did not make it into 4.0 and have no return date yet.