Add echo in 4 steps:
- Select audio and add a little silence at the end
- Open Effect → Delay and Reverb → Echo
- Set delay time and decay factor
- Preview, then apply
What Is the Echo Effect?
Echo repeats your signal at a fixed interval, with each repeat quieter than the previous one. In Audacity, Echo is a simple two-parameter effect that is great for vocals, spoken-word impact, guitar slapback, and spacious sound-design tails.
How to Add Echo in Audacity
Step 1: Select Your Audio (and Add Silence)
Select the target region, then add a few seconds of trailing silence so repeats are not cut off.
Step 2: Open Effect > Delay and Reverb > Echo
Launch Echo from Audacity's delay/reverb effects group.
Step 3: Set Delay Time and Decay Factor
Use delay time to set spacing and decay factor to control how fast repeats fade.
Step 4: Preview and Apply
Preview first, then apply once timing and fade feel right.
Echo Settings Explained
Delay Time (seconds)
Sets the gap between repeats. Short values create slapback; medium values produce classic rhythmic echo.
Decay Factor
Controls loudness reduction per repeat. Values above 1 can grow each repeat and clip quickly.
Selection Length and Trailing Silence
Echo is rendered only inside the selected length. Add silence if you want full tails after the spoken/sung phrase.
Clipping and Output Level
Repeated summing can raise peaks. If clipping appears, lower source gain and reapply.
Echo vs Delay vs Reverb
| Effect | What It Does | Typical Use |
|---|---|---|
| Echo | Fixed repeats with simple controls | Voice effects, slapback |
| Delay | More advanced repeat patterns and options | Rhythmic and creative delays |
| Reverb | Diffuse room reflections | Natural ambience |
Common Use Cases
- Trailer-style voice impact
- Vocal ad-libs and phrase tails
- Retro slapback guitar/vocals
- Dub-inspired repeats
Tips for Best Results
- Start around 0.25–0.6 s delay and 0.4–0.6 decay for balanced musical echoes.
- Add silence before applying to preserve tail endings.
- Use lower input gain when testing high decay values.
- Compare with Delay effect if you need more control.
Frequently Asked Questions
Can Echo sound like reverb?
Not exactly. Echo gives
distinct repeats; reverb gives dense ambience.
Why no audible repeats?
Delay may be too long for the
selected clip or decay too low.
Can I sync echo to tempo?
Yes, by converting beat
values to seconds and setting delay time accordingly.
Download Audacity Free
Use Audacity's free Echo effect on Windows, macOS, and Linux.