DJ Mixing Guide
Recommended Guide

The Ultimate Guide to Sound Optimizer Tool

Learn how to analyze, edit, and master your tracks like a pro with Sound Optimizer Tool.

Drag & Drop Audio File

Unlock the full power of Free Audio Lab after uploading. Your file will be automatically analyzed for:
Tempo (BPM), LUFS, and True Peak.

Inside the Interactive Studio, your personal Mastering Assistant awaits! You can:
Apply Advanced EQ (Hi/Low Cut Filters), Noise Gate & De-Esser, adjust Gain & Dynamics (Compressor), shift Pitch & Speed, create 8D Spatial Audio, modify Channels & Sample Rate, monitor your Live LUFS / True Peak in real-time, and easily convert files to high-quality WAV formats.

or click to select a file from your device

Supported formats: WAV, MP3, OGG, FLAC, M4A

File Ready

track.mp3

Analysis Complete

Loading filename...

Tempo (BPM)

--

Loudness (LUFS) LIVE

--
Max: --

True Peak LIVE

--
Max: --

Editing Studio

Pro Tip: Need to cut out unwanted parts of your track perfectly?
Open Audio Trimmer
Time: 00:00 / 00:00
sec
sec

Real-Time Effects & EQ

LUFS: -- Max: --
Peak: -- Max: --
Mastering Tip: Target -14 LUFS and max -1 dB True Peak for Spotify & Social Media.
If raising the Volume/Gain causes True Peak to clip (go above 0 dB), increase the Compressor Ratio to squash the loud peaks first!

Advanced EQ & Filters

Export Settings

Export Edited Audio

Pro Tip: Need your file in .MP3 format? Export as WAV here, then use our fast converter.
WAV to MP3 Converter

Audiogram Maker

Want to create a horizontal (16:9) static video for TikTok, Reels, or YouTube using your edited audio and a background image? Try our fast Audiogram tool! Open Audiogram Maker

What is the Smart AudioLab Studio?

Welcome to the ultimate browser-based audio engineering hub. Free Audio Lab transforms your standard web browser into a powerful, zero-latency Digital Audio Workstation (DAW). Designed for producers, podcasters, video editors, and content creators, our platform eliminates the need for expensive software subscriptions, complex installations, and intrusive account sign-ups.

Whether you are performing surgical 3-Band EQ sweeps, analyzing true peak LUFS for streaming compliance, calculating harmonic Camelot keys for a DJ mix, or seamlessly converting lossless formats, every tool you need is right at your fingertips.

Simply drag and drop your audio files into the designated workspace. Because we leverage modern WebAudio API technology, all processing—from waveform analysis to pitch shifting, phase inverting, and rendering—happens directly within your browser. This means zero wait times for server uploads, no file size limits, and an unparalleled level of data security.

Local Processing

Everything is computed locally on your device's own CPU and RAM. Enjoy lightning-fast rendering and real-time playback without the lag of traditional cloud-based converters.

100% Privacy

Your files never leave your device. We do not upload, store, monitor, or collect your audio data on any external servers. What you create stays entirely yours.

Pro Quality

Export your finished tracks with industry-standard precision. Maintain lossless audio integrity, hit exact true peak levels, and ensure your mix is ready for global distribution.

Blog & Guides

View All

Discover step-by-step guides, audio engineering tips, and tutorials to help you get the most out of Free Audio Lab.

Guide

How to Pick Songs Like a Pro DJ

Learn how to seamlessly blend songs and create your own DJ sets using the Smart Music Joiner and harmonic mixing techniques.

Read Article
Tutorial

How to Master Audio for Spotify in AudioLab Studio

Learn how to hit the perfect -14 LUFS target and optimize your track's true peak with AudioLab Studio.

Read Article

Processing Audio...

Applying DSP algorithms locally to your file.

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