Audio Sprite Creator

Choose the Howler manifest and the JSON includes a sprite map of offset, duration and loop for each clip in milliseconds, ready for new Howl({ src, sprite }). The generic and engine-neutral manifests list every clip with its offset and duration in seconds and milliseconds, plus the sample rate and channels, for any engine.

Clip names come from the file names, so a file called coin.wav becomes the coin sound in your code.

Select a clip in the Clips card and the preview shows it with its trim as draggable handles. In the Control Panel, set the exact start and end, gain from -24 to +24 dB, fade in and fade out, a loop flag for music beds, and silence trimming at the edges.

The sprite settings apply to the whole file: sample rate, mono or stereo, the gap between clips, an optional crossfade, the manifest and the output format.

After Build, the preview switches to the whole sprite with every clip as a numbered band; click a band to select that clip. Switch between Clip and Sprite to check a single sound or the full timeline.

Download the ZIP with the audio and the JSON together, or the JSON on its own after changing only the manifest.

MP3 encoders add a short delay at the start of the file, which can shift every sprite offset. ToolBuddy writes the gapless header that tells decoders to skip it, and its tests decode the sprite and check that each clip starts where the manifest says.

A short gap between clips, 0.05 seconds by default, keeps one sound from bleeding into the next when a game stops playback slightly late.

To combine clips into one continuous recording rather than a sprite, use the Audio Joiner. To clean up a long recording before cutting it into clips, use the Noise Remover and the Silence Remover.

To change the format of many files without packing them, use the Audio Converter, and to make them smaller, use the Audio Compressor.