professional audio time-stretcher

Slo‑Fi

Your browser is the studio.

  • Time-stretch any audio
  • Zero uploads — 100% private
  • Reverb · EQ · Effects chain

Drop your audio file here

or click to browse  ·  mp3  wav  flac  ogg  aac

Playback
Space
Play / Pause
S
Stop & rewind
L
Toggle loop
F
Fullscreen
Navigation
←
Rewind 5s
→
Forward 5s
N
Next track
P
Previous track
Volume
[
Volume −10%
]
Volume +10%
Presets
1
Lo-Fi
2
Vaporwave
3
Ambient
4
Hyperpop
5
Custom
Other
?
Show this help
Audio Controls
Speed
Slows or speeds up playback (0.5× – 1.7×) without changing pitch.
Pitch
Shifts pitch up or down by semitones while keeping tempo constant.
Volume
Master output level.
Reverb Mix
Wet/dry blend of the convolution reverb effect.
Decay
How long the reverb tail rings out (0.5s – 8s).
Room Size
Virtual room size — affects reverb diffusion and spaciousness.
EQ
Three-band equalizer (low shelf, mid peak, high shelf) ±12 dB each.
Chorus
Rate controls modulation speed; Depth controls intensity of the shimmer.
Saturator
Adds harmonic distortion — from subtle warmth to heavy drive.
8D Audio
Binaural panning that rotates the audio around your head. Use headphones.
Hz Resonance
Applies a solfeggio frequency tone underneath the track.
Visual Effects
Wireframe
Renders only the orb's mesh edges as glowing lines instead of a solid surface.
Bass Pulse
Orb scales up on every kick drum hit.
Lightning
Electric arc bolts that spark from the orb surface on beats.
Crack Veins
Blazing fracture lines that appear on heavy bass hits.
Crystallize
Freezes and ices the orb geometry when playback is paused.
Glitch
Digital corruption artifacts — vertex displacement and color noise.
Reactivity
How aggressively the orb responds to the audio — low for calm visuals.
Glow
Bloom post-processing intensity around the orb.
Particles
Number of dust motes orbiting the sphere.
Stars
Brightness and twinkle intensity of the background star field.
v3.0.0 beta

A browser-based lo-fi music visualizer with real-time audio effects and a reactive 3D orb. Drop any audio file and tune it to your vibe.

Built with
Three.js Web Audio API Tailwind v4 TypeScript Vite
github.com/gurvinny