Echo and Delay

How it works

1. Choose an audio file.
2. Set the delay time, feedback and mix; turn on ping-pong for stereo.
3. Preview the result.
4. Export and download.

Delay, feedback and mix

The delay time is the gap between the sound and its first repeat. Under about 120 ms the repeat blends into the sound and sounds like a thickening (a slapback); from 250 ms upwards it is heard as a separate echo. Feedback decides how many repeats follow: each one is that fraction as loud as the one before, so 0 gives a single repeat and 90 percent gives a long fading trail. Mix is the level of the repeats; the original sound always passes through unchanged.

Tempo-synced delays and ping-pong

Instead of milliseconds you can give the delay as a note length at a tempo, for example a dotted eighth at 120 BPM, which is 375 ms. The page shows the resulting time. Ping-pong makes the repeats alternate between the left and right speaker; a mono file becomes stereo. The high-cut filter darkens each repeat a little more, which keeps echoes behind the original instead of competing with it.

Presets and limits

Presets include Slapback, Short echo, Classic echo, Ping-pong, Dub and Long tail. The delay can be 1 to 2000 ms and feedback up to 95 percent. The ring-out after the end of the file is kept, up to 10 seconds, so the last repeats are not cut off. The page shows how long the repeats take to fall by 60 dB.

Questions