Slowed and reverb generator: make a slowed + reverb version online
Upload a song and get a slowed + reverb version: slower, lower in pitch and wrapped in reverb, the sound of the slowed edits on TikTok, Reels and Shorts. Pick −10, −15 or −20%, choose light, strong or no reverb, and download WAV or MP3 320. The tool on this page opens in Slow down mode.
Make a slowed + reverb version
- Slow down: −10, −15 or −20%
- Reverb: none, light or strong
- Tracks up to 10 minutes
How each setting changes the song
| Setting | Speed of the original | Pitch |
|---|---|---|
| −10% | 90% | about 1.8 semitones lower |
| −15% (default) | 85% | about 2.8 semitones lower |
| −20% | 80% | about 3.9 semitones lower |
Light, strong or no reverb
| Reverb | What it does |
|---|---|
| None | A plain slowed version with no added space |
| Light (default) | A hall-like space around the sound; the song stays clear |
| Strong | A larger, cathedral-like space and more reverb in the mix |
The reverb is added after the slow-down, so its tail plays at the new tempo instead of being slowed along with the song.
An honest note on pitch
The tool changes speed the way a turntable does: when the song slows down, the pitch drops with it. That is the slowed sound. If you want the slower tempo but a key close to the original, raise the result by 3 semitones in the key changer, which keeps the tempo.
Step by step
- Upload the song: WAV, MP3, FLAC, M4A or OGG, up to 10 minutes.
- In Slow down mode, pick −10, −15 or −20% and choose no, light or strong reverb. The screen shows the new speed and how many semitones the pitch drops.
- Download WAV or MP3 320. The settings are in the file name, for example “song_slowed_85_reverb.wav”.
What you get
- Format: WAV or MP3 320 kbps, your choice.
- Input: WAV, MP3, FLAC, M4A or OGG, up to 10 minutes and 100 MB.
- Peak safety: if the peak goes above −1 dBTP after processing, the whole file is turned down by one fixed amount. It is not a limiter, so the dynamics stay as they were.
- Privacy: the version is returned right away, and your source file is not stored.
Free limits
| Who | Free every day |
|---|---|
| No account | 1 version a day |
| With a free account | 1 version a day |
| Account, beyond the free limit | 1 credit per version, refunded if processing fails on our side |
The tool shows how many free versions you have left today.
After the slowed version
- Master it in the lab: 1 free master every day, no account needed.
- Need it faster instead? The sped up song maker speeds a song up by 10 to 25%.
- Make it lo-fi too with the lo-fi converter: 8-bit grain, hiss and tape drift.
- Want an instrumental to slow down? The vocal remover splits the voice from the music.
About rights. Make versions of your own songs or songs you have the rights to. Publishing a sped up or slowed version of someone else's song needs the rights holder's permission.
Is the slowed and reverb generator free?
Yes. Without an account: 1 version a day. With a free account: 1 version a day. Beyond that, a version costs 1 credit for a signed-in user. Limits reset at midnight UTC.
How is slowed + reverb different from just slowing a song down?
The reverb. It adds space around the sound and softens it, which is what gives slowed edits their dreamy feel. You can also pick no reverb and get a plain slowed version.
Which reverb should I choose?
Start with light, the default. Strong adds a bigger space and more reverb to the mix; it suits sparse songs better than dense ones.
Can I slow a song down and keep the original key?
Not in one step: here the pitch drops with the speed, about 2.8 semitones at −15%. To get close to the original key, raise the slowed version by 3 semitones in the key changer, which keeps the tempo.
Which files can I upload?
WAV, MP3, FLAC, M4A or OGG, up to 10 minutes and 100 MB. You download WAV or MP3 320.
Is my song stored?
No. The version is returned right after processing, and the source file is not saved on our server.