Slowed and Reverb Generator
Drag the speed down, open up the room, hear it immediately. Everything happens in this tab — your file is never uploaded and you do not need an account.
What it does
Slower, lower, and further away
Slowed and reverb is a specific sound, not just a slow song. Two things happen at once: the track is played back below its original rate, which drags the pitch down with it, and the whole thing is pushed into a large reverberant space so the edges blur together. Done right it makes a familiar record feel like it is being remembered rather than played.
The pitch dropping is the part people get wrong. Modern editors default to time-stretching, which slows a track while holding the pitch where it was — useful for practising an instrument, wrong for this. This tool changes the playback rate instead, the way a tape machine would, so the vocal sits lower and heavier. That descent is the whole aesthetic.
Everything runs in your browser using Web Audio. Nothing is sent anywhere, there is no account, and there is no per-file cost, so you can push the sliders around until it sounds right instead of budgeting your attempts.
How it works
How to make slowed and reverb songs
Three sliders and a download. No editor to learn.
- 01
Choose a song from your device
MP3, WAV, FLAC, M4A — a video file works too, the audio track is pulled out of it. The file is read locally and never leaves your machine.
- 02
Set speed, reverb and room size
Speed around 85% is the classic setting. Reverb controls how much of the wet signal you hear; room size sets how long the tail rings on.
- 03
Play it back and download
Preview in the page, adjust anything you do not like, run it again. When it sounds right, download the WAV.
What you get
What a slowed and reverb maker needs to get right
The pitch drops with the speed
Rate change, not time stretch. The bass sags, the vocal deepens, everything settles — that descent is what separates this from a track that is merely slow.
- slower
- pitch unchanged
- not this genre
- slower
- pitch drops with it
- this is the sound
Speed you can actually dial in
Anywhere from half speed to slightly sped up, in one-percent steps. Most of the genre sits between 80 and 90 percent; a few percent either way changes the whole mood.
A room you choose the size of
Reverb amount and tail length are separate controls. A short tail thickens the track; a long one pushes it far away and makes the lyrics hard to follow, which is sometimes exactly the point.
An online slowed and reverb tool that never uploads your file
The audio is decoded and processed by your own browser. Nothing is transmitted, nothing is stored on a server, and there is no account or credit system in the way.
Who uses it
What people make with it
Edits for short video
The slowed version of a track is its own format on TikTok and Reels, and the pacing suits a slow edit far better than the original tempo.
Late-night listening
A version of a song you already love, for the part of the night when the original is too bright.
Study and focus playlists
The genre overlaps with lo-fi for a reason — slowing a track down and softening it removes most of what makes music distracting.
Backgrounds for streams
Something familiar, sitting far enough back in the mix that it does not fight with a voice over the top.
A different reading of your own track
Producers run their own mixes through it to hear what the arrangement does at another tempo.
Sped up, too
Push the speed slider past 100% instead and you get the other half of the format — same tool, opposite direction.
FAQ
Slowed and reverb questions
It is a way of remixing an existing song, popularised through YouTube and TikTok, where the track is slowed to roughly 80–90 percent of its original speed — pitch falling with it — and then soaked in reverb. The result feels distant and heavy. It is closely related to the older chopped and screwed style, which slowed records down the same way but also cut them up.
Yes, genuinely — no account, no credits, no watermark, no cap on how many songs you run. It costs us nothing to offer because your own browser does the work; the audio never reaches a server of ours.
85% is the usual answer and a good place to start. 90% is subtle enough that some listeners will not consciously notice. Below 75% the vocal starts to smear and consonants get mushy, which some people want and most do not. Try three settings before deciding — it takes seconds and the right one depends on the song.
Because that is the effect. Slowing playback stretches every waveform, which lowers every frequency along with it — the same thing that happens to a record played at the wrong speed. Tools that hold the pitch steady are doing extra work to prevent it, and the result is not this genre.
You would need the audio as a file on your device first, and downloading from YouTube breaks its terms unless the video offers a download. If you already have the file — your own upload, a purchase, a track you were sent — drop it in here and it works the same as any other.
A slowed and reverb version of a commercial record is a derivative work of someone else’s recording. YouTube usually detects it and applies a Content ID claim, which normally means the rights holder collects the revenue rather than the video coming down. Distributing it to Spotify without a licence is a different scale of problem and will get taken down. Making one for yourself, or for a video where a claim is acceptable, is the ordinary case.
A few seconds for a normal song — the processing is not real-time, so a four-minute track does not take four minutes. The practical ceiling is memory rather than time: files up to about 100MB are fine, and a very long file on a phone may run out of room.
Yes — pick MP3 and a bitrate before you download, or WAV if you want it lossless. WAV is the default because nothing is thrown away; MP3 at 192kbps or above is the sensible choice if the file is going into a video or onto a phone.
Yes, in a modern mobile browser. Very long files are the limitation — processing holds the whole song in memory, and phones have far less of it than laptops. If a big file fails, trim it first.
Push the speed slider above 100%. Sped-up edits are the same operation in the other direction, and the reverb controls still apply if you want the space without the drag.
Slow something down
Pick a song, move two sliders, hear it a few seconds later. Nothing is uploaded.