Where to start
If your recording sounds messy, the fastest wins usually come in this order: remove the silence, then clean the steady background noise, then deal with any echo or reverb, and finally get the levels and export settings right. The guides below follow that order, so you can read them as a sequence or jump straight to the problem you have right now.
Every technique here can be tried with the free tools on the Offex Audio home page, which run on our secure server — you upload a file, it is processed, and the result comes back to you.
All guides
How to Remove Background Noise From a Recording
A step-by-step method to take fan hum, hiss and room noise out of any recording without making the voice hollow.
How to Clean Up Audio for a Podcast
A fixed five-step routine — trim, denoise, de-echo, level, export — so every episode sounds the same.
How to Remove Echo From a Voice Memo
Why phone memos sound echoey, and the practical ways to reduce it when you cannot re-record.
How to Separate Vocals From a Song
Karaoke tricks, phase cancellation and AI stem splitting compared — and which one actually works.
How to Fix Muffled Audio
Diagnose missing highs versus low-end mud, then bring the clarity back without adding harshness.
How to Remove Background Music From a Video
Separate a music bed from dialogue, keep everything in sync, and avoid the mistakes that ruin a clip.
How to Record Clean Voice on a Phone
Room, distance and settings that turn an ordinary phone into a clean voice recorder.
Why Is My Recording Noisy? Causes and Fixes
Tell hiss, hum, buzz, crackle and rumble apart by ear, find the cause and fix it properly.
How to Remove Hum and Hiss From Audio
Find the hum frequency, notch it out, and reduce hiss without leaving the voice thin or watery.
How to Make Voice Recordings Sound Professional
A complete checklist — room, technique, levels, cleanup, tone and export — in the right order.
Remove Silence From Audio Without Losing Natural Pauses
Trim the dead air before you talk, between sentences and after you finish — while keeping natural pauses.
5 Practical Ways to Clean Background Noise From Voice Recordings
Fan hum, hiss, room tone and keyboard clatter — five ways to get rid of them without hollowing the voice.
Voice vs BGM Separation: How AI Stem Splitting Works
How stem splitters pull a voice apart from a music bed, and where they still struggle.
A Simple Podcast Editing Workflow for Beginners
A repeatable order of operations so editing one episode stops eating your whole evening.
How to Record Clean Voice Audio at Home (No Studio Needed)
Room, distance, levels and habits that remove noise before it ever reaches your editor.
How to Remove Echo and Reverb From a Voice Recording
Diagnose the reflection, fix the room, then apply gentle tools in the right order.
Best Audio Format and Settings for Podcasts
Bitrate, sample rate, bit depth and channels — sensible defaults in plain language.
How to Clean Up Interview Audio: A Step-by-Step Guide
Two voices, two rooms, two problems — a practical order for cleaning interview recordings.
Audio Noise Reduction Online (Free)
What online noise reduction really does, and how to get a clean result from a web tool.
Podcast Audio Editor Online: Free Tools That Work
Which parts of podcast editing you can do free online, and which still need a desktop editor.
Remove Vocals From a Song Online: What Actually Works
Karaoke tricks, phase cancellation and AI stem splitting — what each one can and cannot do.
How to Fix Clipped and Distorted Audio
What clipping does to a waveform, which repairs actually work, and how to prevent it.
Loudness Normalization Explained
LUFS targets for YouTube, podcasts and Spotify, and how to hit them cleanly.
7 Audio Editing Mistakes Beginners Make
Over-denoising, wrong order, loudness chasing — and the fix for each.
How to Fix Wind Noise in Outdoor Recordings
High-pass and spectral repairs that help, plus prevention that actually works.