Web Arpeggiator
🎵 Sound Starters
One-click factory presets — pick a sound and start exploring
Transport
Master output volume level (-40 dB to 0 dB)
Tempo speed in beats per minute (40 to 240)
Adds groove & shuffle to straight rhythms
Final Audio Output Peak Meter
Measures real-time output signal level in dBFS after the master limiter.
- Scale: -60 dBFS (silence) to 0 dBFS (digital ceiling).
- CLIP Button: Latches red if audio reaches 0 dBFS. Click to reset the warning.
Pattern
Rhythmic step subdivision (32nd note to Half note)
🎼 Scale Quantization
This feature "snaps" the notes you enter to the nearest note in the
selected scale, helping you stay in key.
Set to "Chromatic (Off)" to disable, or toggle the checkbox on the
right.
Octave
Transposition offset (-3 to +3 octaves)
Number of octave duplications (1 to 5 octaves)
⌨️ Keyboard Control
Press keys to test notes, or enable "Add to Pattern" to append notes directly.
Synth
Pulse width / square wave timbre balance
Frequency ratio of modulating oscillator (dissonance/metallic)
Intensity / depth of timbre modulation
Starting cutoff frequency for filter envelope sweep
Number of octaves modulated by the envelope
Resonance sharpness of the dedicated mono filter
Harmonic interval ratio between Voice 1 and Voice 2
Pitch modulation vibrato intensity on second voice
String material dampening frequency (lower = warmer nylon)
String resonance sustain and body ring duration
Initial plectrum pick/pluck strike transient strength
Duration of initial pitch drop on percussive strike
Pitch sweep range for percussive punch / 808 drop
Short = staccato & punchy; Long = smooth & sustained
Envelope (ADSR)
Time to reach peak volume from key strike
Time to drop from peak to sustain level
Held volume level while note is active
Fade-out duration after note stops
Filter
Tone brightness; low = warm/dark, high = bright/crisp
Sharpness / vocal emphasis at cutoff peak
Effects
Harmonic saturation and distortion warmth
Stereo shimmer and modulated detune blend
Left/right stereo oscillation depth
Echo wet/dry blend (fixed 8th note delay)
Room acoustic space and decay wet/dry blend
Utilities
Real-time Recording
Record your live parameter changes.
Export Recording
Offline Audio Export
Number of complete pattern cycles rendered into the export audio.
Calculating export duration…
Appended after the final pattern cycle when Include effects tail is selected.
Generate offline audio or Standard MIDI files from the current settings.
Preset Management
Save, load, and share arpeggiator sound & pattern presetsLocal Browser Storage
Browser storage recovery
Retry the failed action first. If it keeps failing, use Export JSON to
back up the current preset, then delete
web-arpeggiator-presets in your browser's site-storage
tools and reload. Deleting it permanently removes locally saved presets
and the last restored session.
File Backup & Transfer
Shareable Preset Link
Generate a shareable URL containing full synthesis parameters and pattern notes.