Reverb Online
Add room, plate, or hall reverb to any audio file in your browser. Three classic spaces, one click each — instantly get a richer MP3.
Add Reverb in 3 Steps
No knobs, no IR file management. Drop, pick, download.
Upload Your Audio
Drag and drop an MP3, WAV, or other audio file. Up to 200 MB.
Pick a Size
Room for tight presence, Plate for vintage sheen, Hall for cinematic depth.
Add Reverb & Download
Hit Add Reverb & Download. Convolution renders and a 192 kbps MP3 is saved.
Why Notevibes Reverb
Three classic spaces, instantly.
3 Reverb Sizes
Room (0.6s, tight), Plate (1.4s, bright), Hall (2.5s, lush). Pick the space that fits your source.
Instant Result
ConvolverNode renders the tail in seconds. Drop, pick, download.
Privacy First
Audio is processed locally in your browser using the Web Audio API. Nothing is uploaded.
Any Audio Format
MP3, WAV, M4A, FLAC, OGG, AAC up to 200 MB.
Clean MP3 Output
192 kbps MP3 saved straight to your device — no watermark, no ads.
Works on Mobile
Add reverb on any phone or tablet. iOS, Android, all major browsers.
Your Audio Stays on Your Device
Every file is processed locally in your browser using the Web Audio API. Nothing is uploaded.
No Upload
File never leaves your device
No Account
Start adding reverb immediately
No Tracking
We never see your audio
When to Add Reverb
Most files process in under a second.
Vocal performances
Add space and emotional depth to lead vocals
Audiobook narration
Subtle room reverb for warmer, less-dry narration
Acoustic instruments
Make guitar, piano, or strings feel alive in a real space
Cinematic voiceover
Hall reverb for trailers, narration tags, atmospheric moments
Lo-fi / ambient music
Wash the mix in lush hall reverb for dreamy beds
Sound design
Build believable spaces for dialogue, FX, and foley
Need Custom Reverb?
The Notevibes Audio Editor gives you all three reverbs plus EQ, compression, echo, and fades — process whole tracks with stacked effects.
Open Full Audio EditorFrequently Asked Questions
How does the reverb work?
It uses the Web Audio ConvolverNode with a synthesized impulse response — exponentially decaying noise that mimics a real space. Three preset spaces are available: Room (tight, 0.6s decay), Plate (bright, 1.4s decay), and Hall (lush, 2.5s decay).
Reverb vs. echo — what's the difference?
Echo is discrete repeats of your audio. Reverb is hundreds of tiny reflections smearing into a continuous tail — what you hear in a real room. Echo gives you rhythm and movement; reverb gives you space and depth. Try the Echo tool for the rhythmic version.
Which reverb size should I use?
Room is great for podcast and dialogue — adds presence without sounding processed. Plate gives a vintage studio sheen, ideal for vocals and snare. Hall is for cinematic, atmospheric, and emotional content — ballads, narration, ambient music.
Will reverb make my audio longer?
Yes — the reverb tail extends past the source. Output adds the decay time to the input length: +0.6s for Room, +1.4s for Plate, +2.5s for Hall, plus a small buffer.
Is the reverb tool free?
Yes. Completely free with no sign-up, no watermark, and no limits. Max file size is 200 MB.
Is my audio file uploaded to a server?
No. The reverb tool runs entirely in your browser using the Web Audio API. Your file never leaves your device.
What audio formats are supported?
MP3, WAV, M4A, FLAC, OGG, and AAC. Anything your browser can decode will load. Output is exported as a 192 kbps MP3.
Does it work on mobile?
Yes. It runs on Chrome, Firefox, Safari, and Edge on both desktop and mobile.
Can I create audiobooks with Notevibes?
Yes. The AI audiobook generator turns your EPUB, Kindle, or PDF into a narrated audiobook with character detection, 550+ voices, and ACX-compliant volume normalization built in.