Audio Layers
Add a short sound cue or a background loop, then preview alongside the motion. Keep the first test simple.
Add audio
- Open File > Upload or Upload in the Library.
- Choose an audio file.
- Wait for the upload.
- Add the uploaded audio to the theme.
- Select the sound layer.
- Open Sound Properties.
MP3 and WAV are useful starting formats. OGG, M4A, and AAC playback depends on the browser and packaged player. Test the same file in HyperSpin before publishing.
Audio layers have no visible canvas artwork.
Set playback
Sound Properties exposes:
| Setting | Purpose |
|---|---|
| Enabled | Include or exclude the sound during playback |
| Start and End | Set the playback range |
| Speed | Adjust the sound timing |
| Delay | Set when playback starts |
| Loop | Repeat playback |
| Volume | Set the layer's output level |
Use the controls shown for the selected sound layer. The audio properties provide no general-purpose event-trigger selector.
Preview
- Stop the theme preview.
- Set a low Volume for the first test.
- Select Play.
- Check the start, delay, and loop point.
- Stop playback and adjust one value.
- Preview again.
A browser sometimes blocks audio until a user interacts with the page. Start preview through the visible Play button when testing audio.
Balance the sound
Use one background loop first. Add short effects after the loop plays cleanly.
Check the theme with video-snap audio enabled and muted. Avoid competing music or overlapping sound cues.
Volume percentages apply to individual layers. Adding layer percentages together does not measure the final audio mix.
Publish and test
Save, publish, then play the theme in HyperSpin. Check sound at the cabinet's normal volume and during a game launch and return.
Use audio you have permission to distribute.
Common fixes
No sound
Confirm Enabled is on, Volume is above zero, the upload completed, and the app's audio output is available. Start preview with the Play button.
The loop has a gap
Check the source file's start and end. Remove unwanted silence in an audio editor, upload the revised file, and test again.
Audio starts at the wrong time
Stop preview, check Delay and the playback range, then preview from the start.