Add Echo to Audio: slap-back, room, hall, or cave, with full control

Upload an audio file and add echo in your browser. Pick a style, then shape the sound with delay, decay, damping, and separate dry and echo levels. The waveform shows the original in gray and the echo tail in white, so you can see how long the repeats last before you export. Turn on ping-pong for a wide stereo bounce. Every export is rendered offline with the exact same settings, includes the full echo tail, and is stamped with blowfix.com metadata. Everything runs in your browser: your audio never leaves your device.

Drop your audio file here or click to browse

Supports MP3, WAV, OGG, FLAC, AAC, M4A, OPUS - Max 50 MB and 30 minutes per file

File

Echo Style

Hall: a 500 ms delay with 0.55 decay and soft damping. A broad, natural space for vocals, piano, and strings.

Levels

Echo level

40%

How loud the echoes are next to the original.

Original level

100%

Lower this for a fully wet, effect-only result.

Echo Shape

Delay

500 ms

Gap between the original and each repeat.

Decay

0.55

How much of each repeat feeds the next. Capped at 0.90 to prevent runaway build-up.

Damping

3000 Hz

Each repeat loses high frequencies, like echo in a real room. Lower is darker.

Ping-pong stereo echo

Output Preview

Repeats

Echo tail

Total

Waveform - gray is original, white is with echo -

0:00 / 0:00

- Preview from 0:00.0

Click the waveform to set where the preview starts. Slider changes are applied to the preview in real time.

Audio with echo -

MP3 Quality