How to use the change audio speed
- Open your audioPress "Open audio file".
- Choose the speedMove the slider and listen live. Choose "Keep the voice natural" to keep the same pitch.
- Apply and savePress Apply, then Export.
Between 0.75× and 1.5× the voice stays clean.
Faster or slower, with a natural voice
Changing speed is useful for learning a song slowly, listening to a long lecture faster, or fitting narration to a video. Echoly offers two kinds of speed change, and you can switch between them while listening.
Keep the voice natural
This mode changes the speed but keeps the pitch, so a speaker sounds like the same person talking faster or slower. Between 0.75× and 1.5× the result stays clean; at the extremes (0.5× or 2×) you may hear a slight warble.
Like a tape
This mode changes speed and pitch together, the way an old cassette or record does. Faster sounds higher and slower sounds deeper, which is a popular effect for remixes.
Change the speed of one part
Select a part first and only that part changes speed, for example to slow down a hard line of a song while learning it.
Popular uses
- Slow a song down to learn its tune
- Listen to a long lecture at 1.25×
- Make narration fit the length of a video
- Create a slowed or sped-up remix
More free audio tools
Questions about the change audio speed
What range of speed can I use?
From 0.5× (half speed) to 2× (double speed).
Will the voice sound like a chipmunk?
Not if you choose "Keep the voice natural". Only the tape mode changes the pitch.
Can I change pitch without changing speed?
Yes, with the Pitch changer (Effects → Pitch).
Does the file get shorter?
Yes. Faster audio is shorter and slower audio is longer; the new length shows above the waveform.