Echo & Reverb
Add echo, room, hall or stadium reverb to vocals, instruments or any audio file.
Add audio
MP3, WAV, M4A, OGG, FLAC, OPUS — or a video to pull audio from.
Choose an output
Add echo, room, hall or stadium reverb to vocals, instruments or any audio file.
Fine-tune
Optional — sensible defaults are already set.
About Echo & Reverb
Add space or repeats to a dry recording with presets ranging from a short slap echo to small room, concert hall and stadium reflections, plus a robot effect built from very short echoes. The effect is built from FFmpeg's echo filter with tuned delay patterns.
When it helps
- Making a dry vocal or instrument recorded in a closet sound like it's in a larger space
- Adding a dramatic echo to a voice line for a video or game
- Creating a robotic voice for a character or meme
- Giving a podcast intro or sound effect a sense of scale
Tips
- Small room is the subtlest and works on spoken word; Concert hall and Stadium are best on music or for deliberate effect.
- Echo and Long echo produce distinct repeats rather than a wash, which suits shouts and single words.
- Effects can't be removed later, so keep your original file. Choose WAV or FLAC output if you'll edit further.
Good to know
Quick answers about echo & reverb in your browser.
Echo is a clearly audible repeat of the sound after a delay. Reverb is many reflections blended together, giving a sense of the room. The Echo presets give repeats; Room, Hall and Stadium give reverb-like space.
Pick the Robot preset. It uses very short, strong echoes that give speech a metallic, comb-filtered tone.
Yes. There is no sign-up, no watermark and no limit on how many files you process.
No. Files are read and processed locally in your browser, so they never leave your device.
Related tools
Part of the Audio Effects & Tools collection.