slowedandreverb — Slowed and Reverb Generator
With slowedandreverb, select a local audio file, shape its speed and reverb, then save your edit. Free export: 128kbps MP3, up to 3 minutes per export, no signup.
Audio decoding and effects run locally in your browser.
Drop your audio file here
or click to browse — MP3, WAV, M4A, OGG, FLAC up to 50MB
How it works
Upload your audio
Choose an MP3, WAV, M4A, OGG, or FLAC file up to 50MB. Your browser must support its codec.
Adjust the sliders
Tweak speed, reverb, room size, tone, and bass to get the sound you want. Pick a preset to start fast.
Export your track
Save free 128kbps MP3 up to 3 minutes per export, no signup. Pro adds 320kbps MP3 and WAV without that cap.
slowedandreverb is a browser-based tool for slowing audio and adding reverb. Start with three steps: choose an MP3, WAV, M4A, OGG or FLAC file up to 50MB that your browser can decode; play it and adjust the sound; then choose an export format. Use audio you own or have permission to edit.
The four starting presets are Slowed + Reverb, Nightcore, Lofi and Dreamy. Choose one in the tool, then compare a short passage before saving. The maker walkthrough helps you pick a starting preset; the online guide explains local-file and browser requirements.
The five controls are speed, reverb wetness, room size, tone and bass boost. Speed changes tempo and pitch together. The original tool previews control changes during playback; it does not provide a multitrack timeline or independent pitch correction.
Free export is 128kbps MP3, up to 3 minutes per export, with no signup required. Pro adds 320kbps MP3 and WAV export without the free duration cap. Read the free plan details before a longer export, or follow the YouTube audio workflow to combine the saved audio with visuals in an external editor.
Want to repeat a short passage rather than only slow it down? Open the manual chopped and screwed generator to select one source segment and repeat it once. That separate mode requires an explicit selection; the standard generator does not automatically detect beats.
Why use this tool?
Real-time preview
Hear every slider change instantly. Adjust speed, reverb, and tone while the audio plays.
Local audio processing
Audio decoding and effects run on your device. Loading the page, encoder, or account features may need internet.
Four curated presets
Jump straight in with Slowed + Reverb, Nightcore, Lofi, or Dreamy. One click to a great sound.
Multiple export formats
Free 128kbps MP3, up to 3 minutes per export, no signup. Pro adds WAV and 320kbps MP3 without the free cap.
No signup required
Start using the tool immediately. No account, no email, no wait. Try before you commit.
Browser-based editing
Use a compatible browser on desktop, tablet, or phone. File access and codec support depend on your device and browser.
Frequently asked questions
- How do I make slowed and reverb audio?
- Choose a supported local audio file, select a preset or adjust the five sound controls, preview, and export. Use audio you own or are permitted to edit.
- What can I export without an account?
- Free export is 128kbps MP3, up to 3 minutes per export, with no signup required. Pro adds 320kbps MP3 and WAV export without the free duration cap.
- Is changing speed separate from changing pitch?
- No. The speed control changes tempo and pitch together. Independent pitch correction and time stretching are not provided.
- Does this tool create a video?
- No. It exports audio. Use an external video editor to combine the downloaded track with visuals you are allowed to use.