Slowed and reverb generator

Make a slowed and reverb edit in three steps

1. Choose a song as an audio or video file. A video gives you an audio-only MP3.
2. Set the speed between 0.70 and 1.00 times, then choose the reverb mix and the room size in seconds.
3. Press Make slowed + reverb, listen to the preview, and download the MP3.

Where slowed and reverb comes from

Slowing records down is an old idea. In 1990s Houston, DJ Screw made “chopped and screwed” mixes by playing hip-hop records at a lower speed, and vaporwave producers later slowed eighties pop into dreamy loops. Around 2017, slowed and reverb edits spread on YouTube and SoundCloud, usually a pop or R&B song at about 80 percent speed, drenched in reverb, with a still image or an anime loop on screen. TikTok then made slowed versions so popular that labels began releasing official ones. The appeal is the mood: slower, lower, and wider, like hearing the song from another room late at night.

How the effect is built

The speed control resamples the audio, which is what happens when a tape or record plays slowly. Every sound gets longer and lower by the same ratio, so a song at 0.85 times runs about 18 percent longer and drops about 2.8 semitones. There is no time-stretching, which is why the drums keep a heavy, lazy feel instead of a processed one. The reverb is a convolution reverb: the tool generates an impulse response, a burst of decaying sound that imitates the reflections in a room, and blends it with your song. The room size sets how long that tail lasts, from one to six seconds, and the mix sets how loud it is against the dry song.

Settings that work

Start with the defaults: 0.85 times speed, 35 percent reverb, and a three-second room. For a heavier, more dreamlike edit, try 0.80 times with 40 to 50 percent reverb and a four or five-second room. Below about 0.75 times, vocals start to sound sluggish and the low end can get boomy, which suits some songs and ruins others. Ballads and sparse arrangements take a lot of reverb well. Busy, bass-heavy tracks turn muddy quickly, so keep their mix nearer 25 percent. Listen to the preview on headphones and on a speaker before you download, because reverb sounds different on each.

Copyright and other limits

Making a slowed version of a song for your own listening is one thing; uploading it is another. A slowed edit still contains the original recording, so platforms such as YouTube and TikTok can match it and mute or remove it, and the rights holder decides what is allowed. Use your own music or licensed tracks, or check the platform rules before you post. Songs that already carry heavy reverb, such as shoegaze or ambient tracks, can turn into a blur, so lower the mix for them. The download is an MP3 at 192 kbps. Processing happens in your browser, so the song is never uploaded to AudioClover.