3D Audio Maker
Turn any audio into immersive 3D sound. Choose a room, drag the source around a radar, automate movement with keyframes, and export — all in your browser.
Key Features
Spatial Positioning
Drag your audio source on a 2D radar to control distance, direction and depth with HRTF-based binaural rendering.
22+ Room Presets
From closets to cathedrals, stadiums to caves — pick a space or fine-tune every acoustic parameter yourself.
Keyframe Automation
Animate sound movement over time. Set instant or animated keyframes — the source follows the path during playback and export.
FDN Reverb Engine
Sample-accurate Feedback Delay Network reverb running in an AudioWorklet — parameter changes are instant, click-free.
Full Waveform & Seek
See your entire audio file as a waveform. Click or drag anywhere to jump to that position instantly.
A/B Dry/Wet Preview
Use the A/B slider to compare the processed signal against the original in real time before exporting.
Custom Presets
Save your own room configurations as presets and load them anytime — stored locally in your browser.
High-Quality Export
Export as WAV, MP3, OGG or FLAC. Peak normalization and silence trimming are applied automatically.
Fully Private
Everything runs in your browser using the Web Audio API — your files never leave your device.
How To Use
Load Your Audio
Click the upload area or drag & drop an audio file (MP3, WAV, OGG, FLAC, etc.) anywhere on the page. The waveform appears at the top so you can see the entire file.
Choose a Room Preset
Pick from 22+ built-in presets like Living Room, Cathedral, Parking Garage, or Cave. Each preset configures room size, reverb, early reflections, echo and more. Switch between Presets and My Presets tabs — you can save your own configurations.
Position the Sound Source
Drag the cyan dot on the radar to move the sound source around the listener (center). Moving it further away increases distance effects — reverb, lowpass filtering and volume drop. Hit Space to play and hear the result in real time.
Fine-Tune the Acoustics
Adjust sliders for Room Size, Reverb Mix, Echo, Absorption and more. Open the Advanced section for RT60 decay, reverb tone, early reflections, air absorption and dry level. Use the A/B slider (B) to compare dry vs. processed audio.
Automate Movement (Optional)
Want the sound to move during playback? Use the Keyframe Timeline below the waveform:
- Seek to a position in the waveform, set your sound source & sliders, then click + Instant (I) or + Animated (K).
- Instant keyframes jump to the new settings; Animated ones smoothly transition from the previous keyframe.
- Double-click a keyframe marker to toggle between Instant and Animated.
- Drag keyframe markers to reposition them on the timeline.
- Click the button to enable automation — the source now follows the keyframe path during playback.
- Disable automation to freely edit settings while listening, then re-enable when done.
Export
Choose your format (WAV, MP3, OGG, FLAC) and click Download. The export renders offline at full quality — including all keyframe automation — with automatic peak normalization and trailing silence trimming. A progress bar shows the current status.
Keyboard Shortcuts
Perfect For
Frequently Asked Questions
No. The binaural rendering works with any stereo headphones. For the best experience, use over-ear headphones in a quiet environment.
HRTF (Head-Related Transfer Function) models how your ears perceive sound from different directions. It allows realistic 3D audio over regular stereo headphones.
Instant keyframes jump immediately to the new settings (position, reverb, etc.) at that point in time. Animated keyframes smoothly transition from the previous keyframe's values — great for fly-bys and gradual room changes.
FDN (Feedback Delay Network) is a professional-grade algorithmic reverb running in an AudioWorklet — a dedicated audio thread in your browser. Unlike convolution reverb, its parameters (RT60, tone, absorption) change instantly and click-free without regenerating an impulse response.
Yes. The export renders the complete keyframe automation path with the same FDN reverb engine — what you hear during playback is exactly what you get in the exported file.
WAV (uncompressed, highest quality), MP3, OGG Vorbis and FLAC. Non-WAV formats use an in-browser FFmpeg encoder. The export automatically normalizes peaks and trims trailing silence.
Yes. Dial in your settings, click Save in the "My Presets" tab, and give it a name. Custom presets are stored in your browser's localStorage and persist across sessions.
The tool itself is free to use. The output is your own processed audio — usage rights depend on the source material you import.
Binaural 3D audio is optimized for headphones. On speakers, you'll still hear spatial effects like reverb and distance, but the full 3D positioning works best with headphones.
Ready to spatialize your audio?
Launch the 3D Audio Maker directly in your browser — no installation, no sign-up.
Start 3D Audio Maker
