Slowed + reverb generator

What is slowed + reverb?

Slowed + reverb is a way of re-editing a song: you play it back more slowly, which lowers the pitch and stretches every note, then wash it in reverb so it sounds like it is echoing through a large, empty room. The result is softer, heavier and more nostalgic than the original, as if you were hearing it late at night from somewhere far away.

The sound has roots in Houston’s “chopped and screwed” mixtapes of the 1990s, where DJ Screw slowed rap records down to a syrupy crawl, and in the vaporwave scene of the 2010s, which slowed and blurred 80s pop. On YouTube and later TikTok, “slowed + reverb” edits became a genre of their own: listeners use them to study, fall asleep or just sit with a song’s mood a little longer.

This generator gives you the classic recipe in one click, then lets you go much further. You can shape the reverb space, keep the original pitch, add bass, turn the track into 8D audio, add vinyl crackle or tape wobble, and export a finished video.

Settings that work

Every song is different, but these starting points cover most edits. Each one is available as a preset above, so you can load it and then adjust by ear.

A few rules of thumb: the slower you go, the less reverb you usually need, because the long notes already fill space. If vocals turn muddy, raise the pre-delay to 30–50 ms or lift the reverb low cut. If the edit sounds too dark, lower damping. The full reasoning is in our guide to the best slowed + reverb settings.

Every control, explained

Speed and pitch

Speed runs from 0.25× to 2× in steps of 0.01. By default the pitch follows the speed, exactly like slowing a record or a tape. That is the classic slowed sound: at 0.85× the song drops about 2.8 semitones. Switch to Set separately to change tempo and key independently with professional time-stretching. You can slow a song down and keep its key, or shift the key up or down by up to 12 semitones without changing the speed.

Reverb

Choose the space (hall, room, plate, chamber, cathedral or arena), then set the amount (wet/dry mix), decay (how long the tail lasts, from 0.3 to 15 seconds), pre-delay, damping, stereo spread, and separate low and high cuts that shape the reverb without touching the dry song. Producers can also load their own impulse response file with “Custom IR”.

Bass and tone

A three-band EQ (bass, mids and treble), a low cut to remove rumble, and a high cut that muffles the song, which is how the popular “playing in another room” and “underwater” effects are made.

8D, width and echo

The 8D effect uses binaural (HRTF) panning to move the song in a circle around your head; choose how fast it rotates and how strong it is. Stereo width can narrow the mix to mono or widen it past the original, and the echo adds tempo-free repeats with adjustable time and feedback.

Lo-fi and vintage

Add vinyl crackle and hiss, tape wow and flutter, analog-style warmth, or bitcrushing for a retro, low-resolution texture. Combined with a high cut, these are the building blocks of the lo-fi and vaporwave presets.

Volume, fades and trimming

Set the output level, fade in and out (the reverb keeps ringing after a fade-out), and keep the built-in limiter on to stop heavy bass or reverb from distorting. Drag the orange handles on the waveform to export only part of a song, turn on Loop to audition a section, and press Original (or the B key) at any time to compare with the untouched track.

Download options

Exports keep the song’s title, artist and cover art, add “(slowed + reverb)” to the name, and are normalized to −1 dB so they are as loud as possible without clipping. You can choose the sample rate, or keep the original. When the export finishes, phones can share the file straight to another app.

Private by design

Most online slowed + reverb makers upload your song to a server, process it there and make you wait in a queue. This one does all the work on your own device: the audio is decoded, processed and encoded inside your browser tab. Nothing is uploaded, nothing is stored on our side, and there is no account to create. It also means there are no upload limits or daily caps, and exports are typically faster than real time.

Works on any device

The generator runs in current versions of Chrome, Edge, Safari and Firefox on Windows, macOS, Linux, ChromeOS, Android, iPhone and iPad. On phones the play and download buttons stay pinned to the bottom of the screen while you adjust settings. For the best results with long or uncompressed files, use a computer or a recent phone, since the whole song is held in memory while you edit.

Use it responsibly

Slowing down a song doesn’t make it yours. Personal listening is one thing, but publishing an edit of someone else’s music can break copyright law and platform rules. Edit songs you own, music with a licence that allows remixes, or tracks you have permission to use. Our guide to posting slowed edits on TikTok and YouTube covers the basics.