Slowed + Reverb: How to Create the Effect Online
Slowed + reverb is a music aesthetic defined by reducing a song's speed to 0.75×–0.85×, which lowers the pitch and creates a dreamy, melancholic feel. The speed part takes under 2 minutes in your browser. The reverb can be added in any free DAW afterward.
The slowed + reverb aesthetic took over TikTok and YouTube in the early 2020s — a counterpoint to nightcore's high energy, built on slow, pitch-dropped, reverb-drenched versions of pop and R&B tracks. sound-goods Speed Changer handles the slowing-down step completely in your browser, no upload required.
How to make slowed + reverb — step by step
Open sound-goods Speed Changer
Go to sound-goods.com/change-mp3-speed-online and drop your MP3, WAV, OGG, FLAC, or M4A file onto the editor. Nothing is uploaded.
Drag the speed slider to 0.75–0.85×
For the classic slowed aesthetic: 0.8×. For a heavier, more dramatic effect: 0.75×. For subtle slowing that keeps it recognizable: 0.85–0.9×. The pitch drops automatically — that's the effect.
Leave pitch at 0 or go negative (optional)
The pitch drops naturally with speed. If you want even more pitch drop without slowing further, add −1 to −3 semitones on the pitch slider. This is a creative choice, not a requirement.
Preview your version
Click Play to hear the slowed version before exporting. The waveform playhead tracks your position in real time.
Export the MP3
Click Export MP3. The file downloads instantly. Now optionally add reverb in Audacity, GarageBand, or any DAW for the full effect.
Slow down your track now — free, no upload
Continuous slider from 0.25× to 4×. Preview before you export.
Open Speed Changer →What speed creates the best slowed effect?
| Speed | Pitch drop | Feel | Common use |
|---|---|---|---|
| 0.9× | −2 semitones | Subtle — barely noticeable to most listeners | Lo-fi background music |
| 0.85× | −3 semitones | Mellow — recognizably slowed, keeps most energy | Chill TikTok / Instagram |
| 0.8× | −4 semitones | Classic slowed — the definitive aesthetic sound | Most slowed + reverb tracks |
| 0.75× | −5 semitones | Heavy — very slow and moody, dramatic effect | Late-night R&B edits |
| 0.5× | −12 semitones (1 octave) | Extreme — deep, dark, almost unrecognizable | Experimental, ambient |
Adding reverb (the second half of the effect)
sound-goods handles the speed change. For the reverb component, these free tools work well:
- Audacity (desktop, free) — Effect → Reverb. Set Room Size to 90%, Wet Level to 30–40% for the classic sound.
- GarageBand (Mac/iPhone, free) — Add the Space Designer reverb to your audio track. Use the "Cathedral" preset and reduce the reverb level to taste.
- BandLab (browser, free) — Upload your slowed MP3, add a reverb effect from the FX chain, and export.
Workflow: Slow down in sound-goods → export MP3 → import into Audacity or GarageBand → add reverb → export final version. Total time: under 5 minutes.
Which songs work best for slowed + reverb?
- R&B, soul, and neo-soul — vocal-forward tracks with emotional delivery translate beautifully when slowed. The lower pitch adds gravitas.
- Pop with strong melodies — the hook becomes more hypnotic at slower speed.
- Trap and hip-hop — the beat becomes more spacious and the bass hits harder at 0.8×.
- Fast EDM drops — slow them to 0.75× and add reverb to create an unexpectedly emotional version of something originally high-energy.
Frequently asked questions
Slowed + reverb is a music editing style that reduces a song's playback speed by 15–25%, which lowers the pitch and tempo, then adds heavy reverb for a dreamy, echoed sound. It creates a melancholic, late-night aesthetic that became popular on TikTok, YouTube, and SoundCloud.
Yes, if you want the full effect. sound-goods Speed Changer handles the tempo and pitch reduction. The reverb component needs to be added in a second step using a tool like Audacity, GarageBand, or BandLab — all free.
The most common is 0.8× (80% of original speed). This drops the pitch by about 4 semitones and creates the classic sound. Experiment between 0.75× and 0.9× to find what works for each specific track.
No. All speed processing runs locally in your browser. Your audio never leaves your device.
Lofi is typically a production style (vinyl crackle, tape saturation, muffled highs). Slowed + reverb is specifically about reducing the speed of an existing song. They overlap in aesthetic but have different technical definitions.
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