How to Edit Audio: The Complete Guide (2026)

I was 12 years old.

No mic. No software. No clue. Just a Samsung Galaxy S (the very first one) and raw audio that sounded like a crowded marketplace.

I didn't even know audio editing was a thing. I'd record a voiceover, upload it, and wonder why nobody watched for more than 10 seconds.

One day, a commenter wrote: "The content is great but your audio hurts my ears." That hit different.

Fast forward to today. I'm 22, eight years into content creation on YouTube, Instagram, and TikTok. I've grown to 33,000 subscribers. And I can take raw audio that sounds terrible and turn it into something that sounds like a professional studio.

Using free software. On any device. In about 15 minutes.

Here's the kicker: the editing methods I use aren't hard. They're just not explained in one place. Every guide covers one tool. Or one platform. Or skips the actual numbers entirely.

This one covers all of it.

By the end, you'll know how to edit audio on a Windows PC, Mac, iPhone, Android, or Chromebook. Whether you're polishing voiceovers, cleaning up podcast episodes, fixing noisy YouTube recordings, or editing audio for Reels.

Before you open any app, here's the big picture.

You need two things: your raw audio file and the right software for your device. That's it.

Here's a quick cheat sheet so you can jump straight to your setup:

If you already know your device, skip ahead. But if you want to understand why some edited audio sounds professional and others sound like a phone call from 2004, keep reading.

Here's something most creators don't realize.

Your audience will forgive a blurry webcam. They will not forgive audio that sounds like you're speaking through a wall.

Researchers actually tested this. They played the exact same information to two groups. One heard clean audio. The other heard noisy audio. The group with bad audio thought the speaker was less credible, less interesting, and less trustworthy.

Same exact words. Different perception. Just because of audio quality.

Bad audio is also the #1 reason people stop listening to podcasts. Not bad content. Bad sound.

And on YouTube (which gets over 500 hours of new video every single minute), the algorithm cares about one thing above all else: how long people watch. If your audio makes people click away in the first 15 seconds, YouTube thinks your video is bad and stops showing it to people.

It gets worse.

YouTube's "Stable Volume" feature now automatically adjusts how loud your video plays. If your audio jumps around in volume (loud one second, quiet the next), YouTube turns everything down. And when it does, all that room hiss and background noise you thought nobody would notice? Now it's front and center.

That's why audio editing isn't optional anymore. It's a baseline requirement.

For YouTube. For podcasts. For Reels. For everything.

Audio editing is just cutting, cleaning, and polishing recorded sound to make it ready for your audience.

That's it. Nothing complicated.

You trim the dead air. You remove the background noise. You balance the volume. You export it in the right format for the right platform.

But here's something nobody in the top 10 Google results explains well: there are two different types of audio editing.

Destructive editing permanently changes your audio file. When you apply an effect in Audacity and save, the original recording is gone forever. There's no undo button after you close the project. This is fast and simple, but risky.

Non-destructive editing keeps your original file safe. Programs like Adobe Audition, Logic Pro, and Reaper add effects on top of your audio without actually changing it. You can undo anything, change the order, or remove effects whenever you want. It takes longer to set up, but it's WAY more flexible.

For beginners: start with destructive editing in Audacity. Just save a backup copy of your raw file first. Always.

For anyone working on client projects, podcasts with multiple episodes, or music: use a non-destructive workflow. You'll thank yourself the first time a client asks you to "just change one thing" three weeks later.

This is the single most important thing in this entire guide.

Order matters. Apply these effects out of sequence and your audio will sound worse, not better.

I call this the Compressor Sandwich:

1. Noise Reduction (clean the recording)
2. Normalize (bring volume to a consistent starting level)
3. EQ (shape the tone)
4. Compression (control the loud and quiet parts)
5. Normalize (set the final volume)

That's it. Five steps. In this exact order.

Why does order matter?

If you apply EQ before noise removal, you boost the frequencies of the noise too. Now the hiss is louder and harder to remove.

If you compress before EQ, the compressor is working on frequencies you haven't shaped yet. It's compressing rumble and mud that you would have cut.

Follow the chain. Every time.

Most creators don't think about formats until they export something that sounds wrong.

WAV: Uncompressed. Every single piece of recorded information is preserved. Large file sizes (about 10 MB per minute of stereo audio). Use this for editing. Always.

MP3: Compressed. Permanently throws away audio data to shrink the file. A 320 kbps MP3 sounds close to WAV, but it's technically worse. Use only for final delivery (podcast RSS, music uploads).

FLAC: Compressed but lossless. It shrinks the file size without destroying any data. Think of it like a ZIP file for audio. Use when you want smaller files but can't lose quality. Not supported by every platform, though.

M4A (AAC): Apple's version of MP3. Slightly better quality than MP3 at the same file size. Used by Voice Memos, iTunes, and Apple Podcasts. Fine for delivery, not for editing.

Which audio format should you use?

Here's my decision tree:

Editing? WAV. Always.

Exporting for YouTube? WAV at 48 kHz, 24-bit.

Exporting for a podcast? MP3 at 128-192 kbps. Your podcast host (Spotify, Apple) will re-encode anyway. 192 kbps gives the best balance of quality and streaming speed.

Archiving finished projects? FLAC. Half the file size of WAV with zero quality loss.

Quick sharing? M4A or MP3. Whichever is easier on your device.

Rule of thumb: edit in WAV. Convert only at the very last step if you need a smaller file.

Here's my shortlist. These are the tools I've actually tested.

None of these are sponsored. I pay for Descript and use the free versions of everything else.

Windows gives you two solid paths. One for beginners who want something dead simple. One for creators who need real control.

How to edit audio in Audacity

Audacity is the most widely used free audio editor on the planet. It runs on Windows, Mac, and Linux. And it gives you everything you need to sound professional.

Setup steps:

1. Download Audacity (it's free, no catch)
2. Open Audacity. Go to File > Import > Audio and load your raw recording
3. If you want to record directly: Set Audio Host to MME, select your microphone, and set Recording Channels to 1 (Mono)

Now let's edit.

Audio editing workflow in Audacity

The order of these steps matters. Don't skip around.

Step 1: Trim and cut

Listen through the recording. Highlight dead air at the beginning and end. Delete it. Find coughs, mistakes, long pauses. Highlight them. Delete them.

In Audacity: click and drag to highlight the section, then press Delete.

Step 2: Noise reduction

1. Find a 5-second section of pure silence in your recording (no talking, just room noise)
2. Highlight that section
3. Go to Effect > Noise Removal and Repair > Noise Reduction
4. Click Get Noise Profile
5. Now select your entire track (Ctrl+A on Windows, Cmd+A on Mac)
6. Open Noise Reduction again
7. Set: Noise Reduction = 12 dB, Sensitivity = 6, Frequency Smoothing = 3
8. Click OK

What just happened: Audacity listened to those 5 seconds of silence, learned what your room noise sounds like, and stripped it out of the entire recording. Fan hums, electrical buzz, room hiss. Gone.

Step 3: Normalize (first pass)

1. Select the entire track
2. Go to Effect > Volume and Compression > Normalize
3. Check "Remove DC offset"
4. Set peak amplitude to -3.0 dB
5. Click OK

This gives the compressor a steady volume level to work with.

Step 4: Equalization

1. Go to Effect > EQ and Filters > Graphic EQ
2. Roll off everything below 80 Hz (removes rumble, desk bumps, and low-end mud)
3. Add a slight boost between 3 kHz and 6 kHz (this is the "presence" range. Makes your voice clearer and easier to understand)
4. Click OK

Step 5: Compression (the meat of the sandwich)

Compression reduces the gap between quiet words and loud words. Whispers come up. Shouts come down. The result: even, professional volume throughout.

1. Go to Effect > Volume and Compression > Compressor
2. Set Threshold to -15 dB to -18 dB
3. Set Ratio to 3:1 or 4:1
4. Attack Time: 2 ms
5. Release Time: 100 ms
6. Check "Make-up gain for 0 dB after compressing"
7. Click OK

Step 6: Normalize (final pass)

Normalize one last time to a peak amplitude of -1.0 dB. This sets the absolute maximum volume.

That's it. The Compressor Sandwich: Noise Reduction, Normalize, EQ, Compress, Normalize.

Your audio will go from raw and uneven to broadcast-ready. Five steps. Five minutes per file.

Rinse and repeat this for every recording you publish.

How to capture system audio on Windows

Want to record a Zoom interview, gameplay audio, or anything playing through your speakers? Then edit it right inside Audacity?

It's called WASAPI Loopback.

1. Open Audacity
2. Change the Audio Host dropdown from MME to Windows WASAPI
3. In the Recording Device dropdown, select your speakers or headphones. Look for the one that says (loopback) after it
4. Critical step: Go to Transport > Transport Options and make sure Software Playthrough is OFF. Leave it on and you'll create an infinite feedback loop. It's deafening.
5. Hit Record. Audacity captures exactly what's playing through your speakers

Now edit the captured audio using the same Compressor Sandwich workflow above.

Audacity export settings for creators

Mac users actually have it better than most people realize. Apple ships GarageBand for free, and Audacity works on Mac too.

How to edit audio in GarageBand

GarageBand comes free on every Mac. For a free app, it's remarkably capable: multitrack editing, a full plugin library, and clean exports.

1. Open GarageBand
2. Select Empty Project
3. Choose Audio as your track type
4. Go to File > Import or drag your raw audio file into the timeline
5. Use the built-in EQ, Compressor, and Noise Gate plugins to process your track
6. Export: Go to Share > Export Song to Disk. Choose WAV or AIFF for further editing. MP3 for delivery

GarageBand edits at 44.1 kHz by default. For video work, manually change this to 48 kHz in Preferences before you start.

How to edit audio in Audacity on Mac

The exact same Compressor Sandwich workflow from the Windows section works identically on Mac. Download Audacity, import your audio, and follow the same five steps.

The only difference: set Audio Host to CoreAudio instead of MME.

How to capture system audio on Mac

Okay, this is where Mac makes things unnecessarily complicated.

Unlike Windows, macOS does not have a built-in way to capture system audio. There's no "loopback" option.

You need a free virtual audio driver. The best option in 2026 is [BlackHole](https://existential.audio/blackhole/).

Here's how to set it up:

1. Download BlackHole from existential.audio (it's free and open source)
2. Install the 2-channel version
3. Open Audio MIDI Setup (search for it in Spotlight)
4. Click the + button at the bottom left. Select Create Multi-Output Device
5. Check both your regular speakers/headphones AND BlackHole 2ch
6. Now in Audacity (or any recording app), select BlackHole 2ch as the input source
7. Hit record. Your computer's audio is now being captured

It sounds complicated. But you set this up once and it works forever.

The old method used Soundflower, but it's been abandoned. BlackHole is the modern replacement. It works on macOS Ventura, Sonoma, and Sequoia.

Audio editing settings for Mac

Same principles as Windows:

Your iPhone isn't just for recording. You can do real audio editing on it too.

How to trim audio in Voice Memos

Voice Memos can trim the beginning and end of a recording. That's about it.

1. Open Voice Memos
2. Tap the recording you want to edit
3. Tap the three dots (...) > Edit Recording
4. Drag the yellow handles to trim the start and end
5. Tap Trim > Save

For anything beyond basic trimming, you need WavePad.

How to edit audio on iPhone with WavePad

WavePad by NCH Software is the closest thing to desktop-quality editing on iOS.

Here's why I recommend it over most alternatives:

• Supports tabbed browsing (open multiple audio files at once)
• Pinch-to-zoom on the waveform for precise editing
• 32-step undo history (most mobile editors don't even have undo)
• Exports WAV, FLAC, and high-res audio up to 192 kHz
• Noise removal with targeted presets (electrical hum, traffic, clicks)

Full WavePad editing workflow for creators:

1. Import your audio (WavePad integrates with Files, iCloud Drive, Dropbox, and iTunes)
2. Auto-Trim to remove silence at the start and end
3. Go to Cleanup > Noise Removal. Select the noise type:

• "Electrical interference" for low hums
• "Background traffic" for outdoor noise
• "Brief clicks" for mic pops

1. Preview the cleanup before applying. When it sounds clean, press Apply
2. Go to Levels > Normalize to bring volume up to professional levels
3. Apply the Compressor to balance loud and quiet parts
4. Go to Effects > Equalizer. Boost high frequencies slightly for vocal clarity
5. Export as WAV at 48 kHz, Mono, for video editing

Rinse and repeat this for every recording.

Other solid options: Ferrite (built specifically for podcasters on iPad/iPhone), and GarageBand (more music-oriented but works for voice).

iPhone audio export settings

Android's built-in tools are basically useless for real editing. But Lexis Audio Editor changes that.

How to edit audio on Android with Lexis Audio Editor

Lexis is the best free audio editing app on Android. The interface looks like a desktop DAW shrunk to your phone. (No exaggeration.)

One important detail: Lexis applies effects destructively. That means once you apply an effect, it's baked into the audio. So the order of operations is everything.

The full Lexis editing workflow (order matters):

Step 1: Import and trim Open your file. Use the playhead to find mistakes, long pauses, and heavy breaths. Drag the selection sliders to highlight the dead space. Tap the three-dot menu > Delete.

Step 2: Normalize Highlight the entire track. Go to Effects > Normalize. This brings the highest peak up to a standard volume. It also makes background noise easier to spot for the next step.

Step 3: Noise reduction Go to Effects > Noise Reduction. A threshold slider appears. Set it carefully. Too aggressive and your voice sounds metallic and robotic. Start low and increase until the hiss disappears without damaging your voice. Tap Apply.

Step 4: Equalizer (Clear Voice preset) Go to Effects > Equalizer/Amplifier. You'll see multiple vertical sliders. The left ones control bass, middle controls mids, right controls treble.

For a clear voice: lower the two farthest-left sliders slightly (removes low-end rumble). Leave the middle neutral. Raise the three farthest-right sliders by 2-4 dB to increase presence and clarity.

Step 5: Compression Go to Effects > Compressor. Start with a moderate setting. You want the peaks smoothed out, not smashed. Listen before and after.

Step 6: Final normalize Run Normalize one last time. This sets your final output volume.

That's the mobile version of the Compressor Sandwich.

Common Android audio editing mistakes

• Overdoing the noise reduction: creates a metallic "underwater robot" sound
• Using stereo for voice recordings: doubles the file size for no benefit
• Exporting as low-bitrate MP3 too early: ruins quality before you even publish

Android audio editing settings

Chromebooks are the most ignored device in almost every audio guide online.

Which is weird, because millions of students, creators, and remote workers use them every day.

You can't run full desktop editors like Audacity natively on most Chromebooks. But browser-based tools are good enough now that it doesn't matter.

You have two realistic options: BandLab for real editing, and Vocaroo for quick cleanup.

How to edit audio on Chromebook with BandLab

BandLab runs entirely in your browser. No downloads. No install headaches. It feels like a stripped-down DAW built for the cloud.

Step-by-step:

1. Go to bandlab.com and create a free account
2. Click Create > Song
3. Import your audio file into the project
4. Trim mistakes and dead air directly in the timeline
5. Open the FX panel
6. Apply:

• Noise Gate to cut low-level background noise
• EQ to remove rumble and add vocal clarity
• Compressor to even out the volume

1. Export your project as WAV or MP3

BandLab is shockingly good for a browser tool. It also works well if you're collaborating with someone remotely.

How to edit audio online with Vocaroo

Vocaroo is not a serious editor. But it is useful when you just need to trim and share something fast.

Use it for:

• Quick voice note cleanup
• Temporary file sharing
• One-off edits when you don't want to open a full project

Don't use it for final publishing. Use BandLab for that.

Chromebook audio editing settings

Adobe Audition is what you graduate to when Audacity starts feeling limiting.

It's not the best tool for everyone. But it is the best tool for detailed voice editing, multitrack podcast production, and surgical cleanup.

Waveform vs multitrack audio editing

Audition gives you two worlds:

• Waveform View: for editing a single file directly
• Multitrack View: for layering music, voice, intros, outros, and multiple speaker tracks

If you're editing one voice track, use Waveform View.

If you're producing a full podcast or YouTube episode with multiple elements, use Multitrack.

Spectral frequency display in Adobe Audition

This is the feature that makes Audition special.

Instead of just seeing waveform height, you see audio frequency visually.

That means you can literally spot:

• Mouth clicks
• Sirens
• Chair squeaks
• Plosives
• Phone buzzes

Then select just that sound and remove it without affecting the voice around it.

This is impossible in Audacity at the same level.

Parametric EQ settings for voice audio

Use these as your starting point:

• High-pass filter at 80 Hz
• Cut 250-400 Hz slightly if the voice sounds boxy
• Boost 2-4 kHz for clarity
• Add a gentle high shelf around 10 kHz for air

Don't boost everything. Subtle changes win.

Match Loudness for LUFS targets

Audition has a feature called Match Loudness that basically removes the guesswork from final export levels.

You drag in your finished audio file. Set:

• Target Loudness: -14 LUFS
• Maximum True Peak: -1.0 dBTP

Hit Run. Audition automatically figures out how much to adjust and does it. Done.

No guessing. No LUFS meters. No math. It just works.

Audacity vs Adobe Audition

This is the section nobody else is writing about properly.

AI audio processing has gotten seriously good in 2026. These tools don't just filter noise. They rebuild your voice using machine learning models trained on thousands of hours of clean speech.

Adobe Podcast Enhance for audio cleanup

This is a free tool that runs in your browser. Upload audio that sounds like it was recorded in a bathroom, and the AI makes it sound like a studio recording.

1. Go to Adobe Podcast
2. Drag and drop your audio file
3. The AI separates voice from background noise
4. Adjust the Enhancement Strength slider. Tip: 80% sounds more natural than 100%. Full strength can make your voice sound sterile
5. Set the Background Mix to 5-10% to keep a touch of room ambiance (sounds more authentic than dead silence)
6. Download the cleaned file

Best for: Solo creators fixing audio recorded in echoey rooms or noisy spots.

Descript Studio Sound for audio editing

Descript takes a different approach. It turns your audio into a text transcript. Then you edit the text to edit the audio. Delete a word from the transcript, and it cuts from the waveform.

Its AI feature, "Studio Sound," doesn't just filter out noise. It rebuilds your voice from scratch to sound cleaner. Toggle it on, adjust the slider, and your laptop-mic recording sounds like it was captured in a treated studio.

The killer feature: Descript's Underlord AI removes all filler words ("um," "uh," "you know") across your entire recording in one click. For a 2-hour podcast, this saves 30+ minutes of manual editing.

Best for: Podcasters and video creators who want text-based editing with AI cleanup.

Auphonic for podcast audio editing

Auphonic is like handing your audio to a mastering engineer who works in 30 seconds.

Upload your file, select a preset (Podcast, Broadcast, ACX), and Auphonic applies automatic leveling, noise reduction, and EQ. It identifies different speakers and balances their volumes independently.

Best for: Podcast creators who want consistent quality without manually processing every episode.

My recommendation: Use both. Clean your audio manually first (the Compressor Sandwich gives you control). Then run the result through an AI enhancer if you want that extra polish. The combination is better than either approach alone.

Different content formats need different audio treatment. Here's what to optimize for each.

How to edit audio for YouTube

Goal: Crystal clear voice that keeps people watching.

YouTube's algorithm cares about watch time. Bad audio kills watch time faster than almost anything else.

Workflow:

1. Import your raw recording into Audacity
2. Apply the Compressor Sandwich method (see Windows section above)
3. Apply moderate compression. Viewers watch on phone speakers, earbuds, and laptop speakers. You need consistent volume across all of them
4. Export as WAV
5. Normalize to -14 LUFS

Why -14 LUFS? YouTube's "Stable Volume" feature automatically adjusts playback levels. If your audio is louder than -14, YouTube crushes it with aggressive compression. This exposes any background hiss or room echo hiding behind the loud voice. Master to -14 and the algorithm leaves your audio alone.

How to edit audio for podcasts

Goal: Conversational pacing and balanced multi-speaker volume.

Workflow:

1. Import each speaker's track separately (this is why remote guests should record locally on their own device)
2. Use Multitrack editing to align all tracks
3. Edit out long pauses and filler words ("um," "uh," "like")
4. Process the final master through Auphonic (it ensures all hosts sound equally loud)
5. Export: MP3, 128-192 kbps, -16 LUFS (Apple), -14 LUFS (Spotify)

Pro tip for remote podcasts: Have each host record their own audio locally and send you the file afterward. Don't rely on the Zoom recording. The quality difference is night and day. This is called the "double-ender" method.

How to edit audio for voiceovers

Goal: Super clear, warm voice that meets strict quality rules.

Workflow:

1. Import your recording into Audacity or Audition
2. Apply precise EQ: remove boxiness around 250-400 Hz
3. Apply a De-Esser to soften harsh "S" and "Sh" sounds
4. Use the Compressor Sandwich method for even volume
5. Export: WAV. For ACX audiobooks: peaks < -3 dB, RMS between -18 and -23 dB

Commercial voiceover is less strict on specs but more demanding on tone. You need warmth, clarity, and zero harsh "S" sounds. A De-Esser plugin is non-negotiable.

How to edit audio for Reels, Shorts, and TikTok

Short-form content is one of the fastest-growing use cases for audio editing, and most guides completely skip it.

Goal: High energy, maximum loudness, zero dead air.

Short-form algorithms reward immediate attention. If your audio starts with two seconds of silence before you speak, you've already lost viewers.

Workflow:

1. Import your voiceover into your editor
2. Cut aggressively. Remove every pause, every breath, every filler word. Short-form audio should feel rapid and punchy
3. Apply heavier compression than you would for YouTube. You want the voice to jump out of small phone speakers
4. Target -9 to -12 LUFS. This is significantly louder than YouTube's -14 standard. Short-form content demands it
5. Import the clean audio into CapCut, VN Editor, or InShot along with your video

Pro tip: Add a very subtle bass boost (around 200 Hz) to give your voice warmth on phone speakers. Phone speakers have almost no bass, so that extra boost helps your voice sound fuller.

This is where most guides get lazy and say "boost the highs." I'm going to give you actual numbers.

These numbers work across Audacity, Audition, GarageBand, and any other EQ you use. They're universal starting points for human voice.

Compression reduces the gap between the loudest and quietest parts of your recording. Whispers come up. Shouts come down. Every professional recording uses compression.

Starting settings for voice:

The goal: 2-3 dB of gain reduction on average. If the meter shows 6+ dB of reduction, you're crushing the life out of the voice. Pull the threshold back.

LUFS stands for Loudness Units relative to Full Scale. It measures how loud your audio sounds to a human ear over the full length of the file.

Every major platform has a target. Miss it, and the platform either crushes your audio down (which exposes noise) or leaves it too quiet.

If you're distributing to multiple platforms, master everything to -14 LUFS. It works everywhere. The platforms will make tiny, unnoticeable adjustments.

Every edit goes wrong eventually. Here's the cheat sheet for the most common issues:

Three audio editing mistakes that ruin your sound

Mistake 1: Applying effects in the wrong order This is the most common beginner mistake. Applying EQ before noise removal boosts the noise. Compressing before EQ squashes frequencies you haven't shaped yet. Follow the Compressor Sandwich order. Every time.

Mistake 2: Over-processing noise reduction Cranking noise reduction to maximum doesn't make your audio cleaner. It makes your voice sound like a robot underwater. Noise reduction is a scalpel, not a sledgehammer. Use it gently (12 dB max) and fix the remaining noise at the source.

Mistake 3: Ignoring the export settings You can nail every effect in the chain and still ruin it at the export step. Wrong format, wrong sample rate, wrong bitrate. Check the LUFS table above and match the platform you're publishing to.

These are the small things that separate amateur audio from professional audio. They're rarely written about because they come from doing the work, not researching it.

The Room Tone trick: Always have 10 seconds of complete silence somewhere in your recording. Don't move. Don't breathe loudly. Just let the mic capture the room. This gives noise reduction software a perfect "noise profile" to analyze. Better profile = cleaner result.

The Clap Sync trick: Editing audio that was recorded separately from video? Line up the clap spike. If you clapped at the start of your recording (you should), find the massive spike in both the camera audio and the external mic audio. Align them. Done in 10 seconds.

The A/B test: After processing, toggle your effects on and off. Compare the raw version to the edited version. If the edited version sounds worse, you've over-processed. Pull back.

The phone speaker check: Edit the entire project on headphones for accuracy. Then play the final export once on your phone speaker and once on your laptop speaker. If it sounds good on all three, you're done.

The 80% AI rule: When using Adobe Podcast Enhance or Descript Studio Sound, never go to 100% enhancement. 80% sounds natural. 100% sounds like a robot. That last 20% removes the "human" quality from your voice.

If you're new to this, some of these terms probably look like another language. Here's every word you need to know, explained in plain English.

Amplitude – How loud a sound is. Higher amplitude = louder.

Bit depth – How much detail each tiny slice of audio contains. 16-bit is CD quality. 24-bit gives you more room to work with. Use 24-bit.

Clipping – What happens when audio is too loud and hits 0 dB. The waveform gets flattened. Sounds like harsh crackling. Can't be fixed. You have to re-record.

Compression – An effect that makes quiet parts louder and loud parts quieter. Makes everything sound more even and professional.

DAW – Digital Audio Workstation. The software you use to edit audio. Audacity, Adobe Audition, GarageBand, and Reaper are all DAWs.

dB (decibel) – The unit for measuring sound level. In digital audio, 0 dB is the absolute maximum. Everything is measured in negative numbers below it (-6 dB, -14 dB, etc.).

De-esser – A tool that softens harsh "S" and "SH" sounds in voice recordings. Important for broadcast and voiceover work.

Destructive editing – Editing that permanently changes the audio file. When you save, the original is gone. Audacity does this.

Dynamic range – The distance between the quietest and loudest parts of a recording. Big dynamic range = big volume swings. Compression shrinks it.

EQ (Equalization) – An effect that lets you turn up or turn down specific frequency ranges. Used to shape how a voice sounds (warmer, clearer, brighter).

Gain – The input volume of your microphone before the audio is recorded.

High-pass filter – An EQ setting that removes all sounds below a certain frequency (like 80 Hz). Gets rid of low-end rumble, desk bumps, and HVAC noise.

Limiter – Like a compressor, but with a hard ceiling. Nothing gets louder than the level you set. Used as the very last step before export.

LUFS – Loudness Units relative to Full Scale. How streaming platforms measure loudness. Every platform has a target number you need to hit.

Mono – A single audio channel. Voice recordings should always be mono. Stereo doubles the file size for zero benefit on a solo voice.

Noise floor – How loud the background noise is when nobody is speaking. Lower = cleaner recording.

Non-destructive editing – Editing that stacks effects on top of your audio without changing the original file. Adobe Audition's Multitrack View does this.

Normalize – Turns up (or down) the volume so the loudest point hits a specific level. Makes sure your audio is consistently at the right volume.

Plosive – A burst of air from saying "P," "B," or "T" sounds. Creates a low thump in the recording. Fixed with a pop filter or angling the mic.

Sample rate – How many snapshots of sound are taken per second. 44,100 Hz is CD quality. 48,000 Hz is the video standard.

Signal-to-noise ratio (SNR) – How loud your voice is compared to the background noise. If your voice is way louder than the noise, you have a good SNR. Get closer to the mic to make it better.

Stereo – Two audio channels (left and right). Used for music. Not for solo voice recording.

True Peak – The absolute loudest point your audio can reach, including tiny spikes that happen when platforms convert your file. Set your limiter to -1.0 dBTP so nothing distorts after upload.

Waveform – The visual picture of audio in your editor. Tall waves = loud. Short waves = quiet. Flat tops = clipping.

Editing great audio comes down to one workflow: the Compressor Sandwich.

Noise Reduction. Normalize. EQ. Compress. Normalize.

Five steps. Five minutes. On any device.

Every platform. Every type of content. That workflow works.

AI tools like Adobe Podcast Enhance and Descript Studio Sound are free in 2026. Even bad recordings can be rescued.

You now have every workflow, every setting, and every fix. For any device. For any use case.

Now stop reading and go edit something.

Written by Rehan Kadri. Last updated: April 2026.

Now open Audacity, drag in a recording, and run the Compressor Sandwich. You'll hear the difference in 5 minutes.