Slowed + Reverb Maker
FREERuns on your deviceRuns on your deviceSlow it down, add space, or speed it up. Hear it change as you turn the knobs.Free vs Pro Same Tool, More Power.
| Feature | Free | Pro |
|---|---|---|
| Save as | MP3 | MP3, WAV and FLAC |
| 9:16 video for TikTok and Reels | — | ✓ Spinning record |
| Songs at once | 1 | Up to 20 |
| Custom rooms | 4 rooms | 20 rooms, from booth to cathedral |
Make a Slowed + Reverb Song in Three Steps.
- Add a songDrop an MP3, WAV or M4A. It plays in your browser and is never uploaded.
- Pick a presetSlowed + Reverb, Sped Up, Nightcore, Daycore or Lo-fi. Turn the knobs to make it yours while it plays.
- DownloadSave an MP3, or with Pro a WAV, a FLAC or a 9:16 video ready for TikTok and Reels.
Five Versions of One Song.
Every preset is just a speed, a pitch choice and an amount of reverb. Here are the ranges that make each style sound right, so you can tweak them yourself.
Slowed + Reverb
Late-night, nostalgic, dreamy
Sped Up
Bright, urgent, made for 15-second clips
Nightcore
High-energy, higher voice, faster drums
Daycore
Heavy, slow and deep, without the wash
Lo-fi
Calm study and background music
Speed and Pitch, Side by Side.
Speed and pitch are tied together
Like a record played on the wrong setting, slowing audio down stretches every sound wave, so every note drops. Every 6% slower is roughly one semitone lower. Turn off Pitch follows speed and the tool time-stretches instead, keeping the original key at the new tempo.
Shifting the key also changes how it mixes with other songs. Use the BPM & Key Finder on the result if you plan to DJ with it.
| Speed | Pitch, if it follows | 120 BPM becomes | A 3:00 song becomes |
|---|---|---|---|
| 0.75× | −5.0 semitones | 90 BPM | 4:00 |
| 0.80× | −3.9 semitones | 96 BPM | 3:45 |
| 0.85× | −2.8 semitones | 102 BPM | 3:32 |
| 0.90× | −1.8 semitones | 108 BPM | 3:20 |
| 1.10× | +1.7 semitones | 132 BPM | 2:44 |
| 1.20× | +3.2 semitones | 144 BPM | 2:30 |
| 1.25× | +3.9 semitones | 150 BPM | 2:24 |
| 1.30× | +4.5 semitones | 156 BPM | 2:18 |
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Turn any song into a slowed + reverb, sped up, nightcore or daycore version in seconds. Pick a preset, adjust speed, reverb and room size while the song plays, and download the result.
Everything happens in your browser. Your music isn’t uploaded or stored.
The Sound Behind the Trend
Slowing a song lowers its pitch and tempo together, and a large reverb fills the space between the notes. The result feels dreamy and nostalgic, which is why slowed + reverb versions took off on TikTok and YouTube.
Sped up versions do the opposite: a brighter voice and a faster beat that fit a 15-second clip.
Edited Songs and Copyright.
This isn’t legal advice, but four things are worth knowing before you share a slowed or sped up version of someone else’s song.
Your edit is still their song
Slowing a track down or adding reverb doesn’t make it a new work. The rights still belong to the artist and the label.
Use the app’s sound library when you can
TikTok and Instagram have licensed music for posts. Many popular sped up and slowed versions are already there, ready to use.
Uploads can be matched
Platforms check uploaded audio against copyrighted music. Edited versions are often still recognised and may be muted or blocked.
Own it or license it
For ads and monetized videos, use your own music, a track you’ve licensed, or get permission from whoever owns it.
Slowed + Reverb, Answered.
What does slowed + reverb mean?
A song played a little slower, usually at 80 to 88% speed, with a large reverb added. The slower speed lowers the pitch, and the reverb adds a washed, dreamy space.
How much should I slow a song down?
Most slowed + reverb versions sit between 0.80× and 0.88×. Below 0.8× voices start to sound unnatural; above 0.9× the effect is subtle.
What’s the difference between sped up and nightcore?
Both play the song faster. Sped up is usually 1.15× to 1.3× with little else changed. Nightcore is around 1.3× with the pitch clearly raised, which gives the higher, chipmunk-like voice.
Can I change the speed without changing the pitch?
Yes. Turn off Pitch follows speed and the song keeps its original key at the new tempo. It sounds less like the classic effect but more like the original.
Is the song uploaded?
No. Speed, pitch and reverb are applied in your browser, and the song never leaves your device.
Can I post the result on TikTok or Instagram?
Only if you have the rights to the song. Edited versions of copyrighted music are still the original song, and uploads can be muted or removed. Using the app’s own sound library is the safest route.
Which files can I use?
MP3, WAV, M4A, FLAC and OGG. To use the sound from a video, pull it out first with the Audio Cutter.
Does it work on voice recordings?
Yes. A little reverb and a slightly lower speed give voice notes and narration a moody, cinematic feel. Keep the reverb under about 25% so every word stays clear.
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