Echo Effect Online
Add tape-style delay to any audio file in your browser. 380 ms delay with feedback — instantly get a wider, more atmospheric MP3.
Add Echo in 2 Steps
No tweaking. Drop your file and download.
Upload Your Audio
Drag and drop an MP3, WAV, or other audio file. Up to 200 MB.
Add Echo & Download
Hit Add Echo & Download. The tape-style delay renders and a 192 kbps MP3 is saved to your device.
Why Notevibes Echo
Tape-style delay, mix already calibrated.
Tape-Style Delay
380 ms delay with 35% feedback creates a series of decaying repeats — classic and musical.
Instant Result
DelayNode + feedback path render in seconds. Drop, click, 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 echo 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 echo immediately
No Tracking
We never see your audio
When to Add Echo
Most files process in under a second.
Vocal hooks
Add space and movement to lead vocals or rap ad-libs
Instrument loops
Make guitar, synth, or vocal loops feel alive
Movie trailer voiceover
Cinematic 'in a world…' delay for narration tags
Sound design
Create lo-fi, dub, or dreamy atmospheric beds
Podcast intros
Add a sense of space to a tagline or station ID
Beat production
Drop echo on a snare or one-shot to deepen a mix
Need Custom Delay Time?
The Notevibes Audio Editor lets you stack echo with reverb, EQ, and pitch — and gives precise control over delay time, feedback, and wet mix.
Open Full Audio EditorFrequently Asked Questions
How does the echo effect work?
A delayed copy of your audio is played 380 ms after the original. That copy gets fed back into the delay line at 35%, creating successive repeats that decay over a few seconds. The wet (echoed) signal is mixed in at 40% so the original stays present.
Echo vs. reverb — what's the difference?
Echo is discrete repeats — you can count them. Reverb is hundreds of tiny reflections smearing into a continuous tail. Use echo for rhythmic, time-based effect; use the Reverb tool for room and depth.
Can I tune the delay time?
Not in this single-shot tool — it is fixed at 380 ms (a versatile musical delay). For full control over delay time, feedback, and wet mix, use the Notevibes Audio Editor where echo is one of the clip effects.
Is the echo effect 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 echo effect 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 via the Web Audio API 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.