8-Bit Sound Generator (sfxr-style)

Classic sfxr-style chiptune sound effects — click a preset, tweak the sliders, export a WAV.

Waveform:

Envelope

AttackSustainPunchDecay

Pitch

FrequencySlideDelta slideVibrato depthVibrato speed

Character

Arp amountArp speedSquare dutyDuty sweepRetrigger

Filters

Phaser offsetPhaser sweepLow-passLP sweepResonanceHigh-pass

Runs entirely in your browser. Exported sounds are CC0 — free for any use, no attribution.

About this tool

This 8-bit sound generator recreates the classic sfxr synthesis algorithm right in your browser: square, saw, sine and noise oscillators with envelope, pitch slide, vibrato, arpeggio, phaser and filters. Every preset button rolls a fresh variation, so no two coins or lasers ever sound the same. Everything runs locally — nothing is uploaded — and exported WAV files are dedicated to the public domain (CC0), ready for your game jam, indie game or video.