Add Echo to Audio

Delay and Echo Effect Online.

Drop your audio here

Your file stays on your device. Nothing is uploaded.

Echo and reverb get mixed up. Reverb is a blur of reflections. Echo is the sound itself, heard again a moment later. Set the gap between echoes, how many there are, and how quickly they die away.

A gap under 120 ms with one repeat gives the slap-back heard on old rock and roll vocals. Stretch it to 400 ms with four repeats and you get the shout-across-a-valley effect.

How to use the Add Echo to Audio tool

  1. Add your audio file.
  2. Set the time between echoes, the number of echoes and the fade.
  3. Apply it and download the file with the echoes mixed in.
  • A slap-back on a vocal or guitar
  • Canyon and stadium effects for videos
  • Announcer-style voice lines

Tips for the best result

  • For music, set the gap to fit the beat: at 120 BPM a quarter note lasts 500 ms.
  • Fast fading keeps speech understandable.

Quick facts

PriceFree
Works withMP3, WAV, M4A, OGG, FLAC
Where it runsIn your browser, on your device
AccountNot needed

Frequently asked questions

What is the difference between echo and reverb?

An echo is a distinct repeat you can count. Reverb is thousands of reflections blended into a tail.

What is the longest delay?

1.5 seconds between echoes, with up to five echoes.

How do I match the echo to my song?

Divide 60,000 by the BPM to get the length of one beat in milliseconds. The BPM Finder tells you the tempo.

Will the file get longer?

No. The echoes are mixed into the existing length, so add silence at the end if the last word needs to ring out.