Audio Tool
Sound is a vital layer of immersion that defines the "feel" of your digital environment. Whether you're looking to establish a subtle mood or create high-stakes directional cues, the Audio Tool gives you the power to manipulate the audio within the 3D environment with precision.
Available in version 2.2.3+ the Audio Tool can help you integrate two distinct types of audio:
2D Audio: Ideal for background music, interface sounds, or narration. These sounds play at a consistent volume regardless of the user's position or orientation within the scene.
3D (Spatial) Audio: Essential for true immersion. 3D audio sources are placed near specific objects or locations. As the user moves, the sound dynamically shifts in volume, mimicking how we hear in the real world.
Adding sound to your scene
- In the Home Ribbon click the Audio tool.
- Click near the spot you want to place the audio within the 3D scene (Viewport tab)
- An audio icon will appear in the scene. By default the audio is 2D.
- Click the "Audio File" property. It will popup a window of all audio files in the project. Select the audio file you want to link to this audio object.
2D Audio Properties
- Parent: Allows you to parent the audio to an object in the scene hierarchy. The audio will move relative to the parent object.
- Audio File: The audio file that will play when the audio is triggered.
- Volume: Controls the max volume of the audio file. 2D audio always plays at max volume.
- Enabled: Turns on/off audio object sound and visibility in the scene.
- Autoplay: Whether the sound will play immediately on state enter or not.
- Continuous: If the audio object exists on the next state it will continue from where it left off or restart the audio file.
- Loop: Whether the sound will play again once it reaches the end of the audio file.
- Gizmo color: Tint of the audio object icon for organization purposes.
- is 3D Audio: Toggles on/off 3D audio properties.
Adding 3D Audio
- Select a 2D audio.
- In properties tab toggle the "is 3D Audio" property on.
- New 3D audio properties are now enabled. You will notice the icon change and a sound bubble appear in the viewport.
3D Audio Properties
Min Range: This is the "inner circle" of your sound. Within this distance, the audio remains at 100% volume
Max Range: This is the "outer limit" of the sound's reach. Once a user moves beyond this point, the sound cuts out entirely.
Rolloff Mode: Rolloff determines how the volume drops as you move from the Min Distance toward the Max Distance. It defines the "slope" of the silence. The two modes available are linear and logarithmic.
