sfxr.js

This is sfxr.js, a sound effects generator for video games. The code was originally http://www.drpetter.se/project_sfxr.html and was ported to JavaScript using the Audio Data API for Firefox 4. The UI is just a quick hack, and if you'd like to make it look better, we'd be happy for the patch!

You can choose a predefined sound below, then play it, mutate it (change it just a bit), or generate a .wav file from it. You can also alter the various aspects of the sound using the advanced settings below. The current sound will be "saved" on the URL as a string in the form sound=..., and you can share this or bookmark it for later.

Manipulate Current Effect:

Current Effect Visualization

Predefined Effects:

Chooose New Wave Type for Current Effect:

Square Saw Sine Noise

Advanced Settings for Current Effect:

Attack Time:

Sustain Time:

Sustain Punch:

Decay Time:

Start Frequency:

Min Frequency:

Slide:

Delta Slide:

Vibrato Depth:

Vibrato Speed:

Change Amount:

Change Speed:

Square Duty:

Duty Sweep:

Repeat Speed:

Phaser Offset:

Phaser Sweep:

LP Filter Cutoff:

LP Filter Cutoff Sweep:

LP Filter Resonance:

HP Filter Cutoff:

HP Filter Cutoff Sweep:

Master Volume: