Free Online Reverb
Add room, hall or plate reverb to any audio file in your browser.
Source
Loops while you adjust. Match loudness sets the effect to the same average level as the original while previewing, so you judge the tone and not the volume. It does not change the export.
Reverb
Drag a knob up or down, or focus it and use the arrow keys. Double-click or press Delete to reset one knob.
Meters
The safety limiter only protects the preview. The export is turned down as a whole if needed, so peaks stay under -1 dBTP.
Export
How to use the reverb
How to use it
Pick Room, Hall or Plate, then set the mix. Decay is how long the reverb takes to fade by 60 dB. Pre-delay is a short gap before the reverb starts, which keeps the original sound clear.
The export adds the reverb tail to the end of the file, so the last note does not cut off.
Sensible starting settings
- Vocal in a mix: Plate, mix 15 to 20%, decay 1.5 s, pre-delay 20 to 40 ms.
- Dry voice-over that sounds boxy: Room, mix 8 to 12%, decay 0.6 s.
- Ambient pads or a big ending: Hall, mix 30%, decay 3 to 4 s.
How the presets are made
Each preset is an impulse response generated in your browser: shaped noise that fades over the decay time and gets darker as it fades. Room adds a few early reflections and darkens quickly, Hall builds up slowly and stays smoother, Plate stays bright. They are not recordings of real spaces.
Set mix, decay and pre-delay, hear it live, and export a 24-bit WAV with the full tail.
How it works.
- 1
Drop in a file
MP3, WAV, FLAC or M4A. It is decoded on your device.
- 2
Adjust while it plays
Turn the controls and hear the change live. Use bypass and loudness match to compare fairly.
- 3
Save a 24-bit WAV
Render the full file and download it with your plan access. Your original is unchanged.
Questions.
How does the reverb work?
It uses convolution: your audio is combined with a generated impulse response for the chosen preset and decay. Mix blends the dry and reverb signals with an equal-power curve.
Are these recordings of real rooms?
No. The impulse responses are generated from shaped noise in your browser. They imitate the general character of a room, hall or plate.
Why is the exported file longer?
The decay time and pre-delay are added to the end so the reverb tail can ring out instead of being cut off.
How much reverb should I use?
Less than you think. Set it until you can just hear it, then compare with bypass. Long decays on fast songs tend to blur the words.
Is my audio uploaded?
No. The file is decoded and processed in your browser with the Web Audio API. Nothing is sent to a server.
Can the export clip?
No. After rendering, the tool estimates the true peak between samples. If it would go above -1 dBTP, the whole file is turned down by the amount needed, and that amount is shown.