Add Echo to Audio

Apply slap-back, room, hall or cave echo with live preview.

Your files are processed on your device and are never uploaded.

Add echo to a voice, instrument or song and hear it live as you change the settings. Pick a style – Slap-back, Room, Hall or Cave – then fine-tune the delay between repeats, the number of repeats and the echo volume.

Add Echo to Audio with ShrinkBee

How to Add Echo

  1. Choose your audio – MP3, WAV, M4A or the sound of a video.
  2. Pick an echo style as a starting point.
  3. Adjust Delay, Repeats and Echo volume while it plays.
  4. Download the file with the echo.

The Echo Styles

  • Slap-back: One quick repeat about a tenth of a second later – the classic rockabilly vocal and guitar sound.
  • Room: Short, soft repeats that add space without getting in the way.
  • Hall: Longer repeats that fade out gradually.
  • Cave: Long, many repeats – for dramatic effects, games and sound design.

Setting the Delay to the Beat

Echoes sound best on music when they land on the beat. Divide 60,000 by the song's BPM to get the length of one beat in milliseconds: at 120 BPM a beat is 500 ms, half a beat is 250 ms. Find a song's tempo with the tap button of our Online Metronome.

Ideas

  • A shout in a canyon or a voice in a tunnel for videos and games
  • Dub and reggae-style delays on single words
  • Thicker guitar and synth parts
  • Announcer and stadium effects

Free and Private

The echo is created in your browser – nothing is uploaded. For a smooth sense of space rather than separate repeats, use Add Reverb to Audio.

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Frequently Asked Questions

How do I add an echo effect to my voice?
Choose your recording, pick an echo style such as Hall, adjust the delay, repeats and echo volume, and download the result.
What delay should I use?
About 80–120 ms for slap-back, 200–400 ms for a clear echo, and 500 ms or more for a cave or canyon effect. For music, match the delay to the beat.
Why does the echo sound messy?
Too many repeats or too loud an echo. Reduce Repeats or Echo volume, especially on speech.
Can I record my voice and add echo?
Yes. Record with Audio Recorder, save the file and open it here.
Is it free?
Yes. There is no sign-up, no watermark and no upload.
Is Add Echo to Audio free to use?
Yes. Add Echo to Audio is completely free, with no sign-up, no watermark and no limit on how many times you use it.
Are my files uploaded to a server?
No. Your files are processed directly in your web browser on your own device. Nothing is uploaded or stored, and the file is gone from memory when you close the tab.

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