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Reverb / Echo
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Accepted: MP3, WAV, M4A, FLAC, OGG, AAC, OPUS, AIFF, AMR, APE
How to use Reverb / Echo
- 1
Upload your audio file
Any common audio format.
- 2
Set delay and decay
Short delay + high decay = reverb-like space.
- 3
Download the processed file
Effect applied.
Frequently Asked Questions
- What is the difference between reverb and echo?
- Reverb is many short reflections blurring together (a room). Echo is a distinct repeat of the sound. This tool uses echo — short delays sound reverb-like, long delays sound like a canyon.
- What delay should I use?
- For reverb-like effect: 30–80 ms. For slapback echo: 100–200 ms. For a canyon effect: 500 ms or more.
- What does decay do?
- How much of each repeat survives. 0.5 means each echo is half as loud. Higher = longer tail.
- Does it apply to video too?
- This tool is audio-only. Use Extract Audio first, process, then recombine with the video if you need the effect on video.
Adding Reverb and Echo
Reverb and echo place your audio in a space. Without them, a voice sounds flat and boxy — like it was recorded in a small closet. With them, it sounds like a concert hall, a cathedral, or a canyon.
Delay Time Controls the Space
- 20–40 ms — small room. Subtle thickening.
- 50–80 ms — medium hall. Classic reverb feel.
- 100–150 ms — slapback echo. Rockabilly and vocals.
- 200–500 ms — large hall or cathedral.
- 500 ms+ — canyon, cave, or dub echo.
Decay Controls the Tail
Decay is how much each repeat fades. 0.3 = subtle, 0.5 = natural reverb, 0.7 = lush and spacious, 0.9 = ambient wash.
Recipes
- Podcast voice, subtle: delay 40, decay 0.4
- Vocal, natural hall: delay 70, decay 0.6
- Lead guitar, rockabilly: delay 120, decay 0.5
- Ambient pad: delay 200, decay 0.75
- Dub style: delay 350, decay 0.8
How It Works
The tool uses FFmpeg's aecho filter to layer delayed copies of the audio on top of the original. Different delay and decay values create every space from a small room to an infinite hall.
Privacy
No uploads. Everything runs in your browser. Your recordings stay private.