StudioWavePro — Online Audio Editor with 48+ Studio Tools

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Slowed + reverb is one of the most-searched audio edits online. The aesthetic is simple: slow a track to around 0.80–0.85× so the pitch drops together with the tempo (the vinyl tape-machine effect), then add a generous reverb tail — Large Room, Church Hall, or Cathedral — to fill the space the slowed track leaves behind. The result turns almost any song into something cinematic, lo-fi, or dream-like.

StudioWavePro's Slowed + Reverb tool does both steps in a single panel. Pick your speed (0.50×–0.95×), choose a reverb space, set the mix, preview against your actual file, and download in one click. No chaining two separate tools, no DAW, no signup.

When to use

Make a TikTok, Reels, or YouTube Shorts backing track with the slowed reverb aesthetic.
Create a lo-fi or dream-pop remix of a track for personal use.
Slow a favourite song to practise singing or playing along at reduced speed (with the pitch-drop character).
Build a cinematic ambient version of a track for a video edit.
Generate a "slept on" or "underrated song" style edit for social media.
Explore what a track sounds like stripped down to its slowest, most cavernous form.

How to use

Click "Open Slowed + Reverb" below to launch the editor.
Drop in any audio file — MP3, WAV, OGG, M4A and FLAC are all supported.
Set the speed: 0.85× is the classic starting point. The panel shows the new duration and the pitch shift in semitones.
Pick a reverb space: Large Room (1.6 s) for warmth, Church Hall (2.6 s) for drama, Cathedral (4.0 s) for full ambient wash.
Drag the Reverb mix slider — 35–50% is the sweet spot for the classic aesthetic. Press "Play preview" to hear it against your file.
Click "Apply Slowed + Reverb" and download as WAV or MP3. The output is extended so the reverb tail rings out naturally.

Tips

0.85× is the internet consensus for "slowed" — noticeable but still recognisable. Go to 0.75× for deep/heavy edits, 0.90× for something subtle.
The mix sweet spot for most tracks is 35–50%. Below 30% the reverb is barely felt; above 60% the track becomes pure ambience.
Church Hall and Cathedral work best for slowed + reverb — the long tail fills the gap that the slowed tempo creates. Large Room is the mellowest option.
After applying, run Normalize if the slowed track sounds quieter than you expected — reverb tails eat some headroom.
The effect works on any genre but hits hardest on tracks with strong melody lines: R&B, hip-hop, pop, lo-fi, and ambient.
The pitch drops by about 3 semitones at 0.85× — roughly a minor third. That downward shift is what gives slowed tracks their characteristic heaviness.

Frequently asked questions

What is slowed + reverb?: Slowed + reverb is an audio editing style where a track is slowed to around 0.75×–0.90× of its original speed — dropping the pitch along with the tempo, like a tape running slow — and then a long reverb is added to create an ambient, dreamy, or cinematic feel. It became popular on SoundCloud, TikTok, and YouTube in the late 2010s.
How do I make slowed + reverb online for free?: Open the Slowed + Reverb tool, drop in your MP3 or WAV, set the speed to around 0.85×, pick Church Hall or Cathedral reverb, set mix to 40%, press "Play preview" to confirm, then click Apply and download. No signup, no install.
What speed should I use for slowed + reverb?: 0.85× is the most common setting — it drops pitch by roughly 3 semitones and stretches a 3-minute song to about 3:32, which still feels like the original. For a heavier edit try 0.80× or 0.75×. The tool shows you the new duration and semitone shift before you apply.
Which reverb preset sounds best for slowed music?: Church Hall (2.6 s tail) is the most versatile — long enough to fill the slow tempo but not so long it blurs everything. Cathedral (4.0 s) is for maximum ambient wash. Large Room (1.6 s) works well when you want the slowed vibe without as much blur.
Does slowing down a song change the pitch?: Yes — this tool uses the vinyl/tape method where pitch follows speed. At 0.85× the pitch drops about 3 semitones; at 0.75× about 4.8 semitones. The info panel shows the exact shift before you apply. If you want to slow down without changing pitch, use the Speed tool in "Keep pitch" mode instead.
Can I use this on any genre?: Yes. The effect is most striking on tracks with melody — R&B, hip-hop, pop, lo-fi, ambient, and even rock ballads. It works less dramatically on already-fast or percussion-heavy tracks where the tempo change is the main thing you notice.
Will the reverb tail get cut off?: No — the output file is extended by the reverb tail length, so the decay rings out fully. A Cathedral preset at 4.0 s adds 4 seconds to the end of the track.

StudioWavePro is a complete audio editor with 48+ studio-grade tools in one workspace. Trim, master, EQ, time-stretch, denoise, remove vocals, detect BPM and musical key, generate metronomes, and more. Editing tools

Audio Trimmer — crop a track to a selected region

Mute Section — silence a selected region

Reverse Audio — play the track backwards

Fade In/Out — ramp volume at start or end

Silence Trimmer — strip leading and trailing silence

Silence Gap Inserter — insert silence at a chosen position

Audio Looper — repeat a section N times

Audio Splitter — cut a track into multiple parts

Audio Merger — join multiple files end-to-end

Silence Splitter — auto-split at silent gaps

Crossfade Joiner — join clips with overlapping fades

Time and pitch

Speed Changer — speed up or slow down (with optional pitch preservation)

Pitch Shift — change pitch without changing tempo

Tempo Detector — estimate the BPM of a music track

Key Detector — estimate the musical key

Metronome Generator — create a click track at any BPM

Effects

Volume — make a track louder or quieter

Bass Boost — lift the low end

Treble Boost — lift the high end

Low Pass Filter — cut off high frequencies

High Pass Filter — cut off low frequencies (remove rumble)

Equalizer (3-band) — low / mid / high tonal shaping

Equalizer (10-band) — fine-grained tonal control

Echo — add repeating echoes / delay

Distortion — overdrive, fuzz, and lo-fi grit

Stereo Balance — shift the L/R center of a stereo mix

Stereo Widener — make stereo narrower or wider

Vocal Remover — karaoke (center-channel removal)

Hum Remover — strip 50/60 Hz mains hum

Mastering and analysis

Normalize — maximize volume without clipping

Compressor — even out loud and quiet parts

Loudness Meter — measure peak, RMS, and LUFS

Mono Converter — collapse stereo to mono

Channel Extractor — pull L, R, Mid, or Side

Sample Rate Converter — resample to 44.1, 48, or 96 kHz

Polarity Inverter — flip waveform for phase alignment

DC Offset Remover — center waveform around zero

Audio Visualizer — render an animated video from audio

StudioWavePro supports MP3, WAV, OGG, M4A, and FLAC files. Exports include WAV and MP3. This app requires JavaScript to run. Please enable JavaScript in your browser.