How do I play ambisonics audio?

Asked on 2024-07-29

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To play ambisonics audio in your app, you can use RealityKit audio as demonstrated in the session Enhance your spatial computing app with RealityKit audio. Here are some key points to consider:

  1. Spatial Audio Sources: RealityKit supports spatial audio sources with six degrees of freedom, meaning the audio's level and tonality update as you or the audio source moves or rotates. This includes physically based distance attenuation and real-time reverb from your surroundings.

  2. Mono Channel Recommendation: It is recommended to author your audio files in mono to avoid unexpected mix-down artifacts during spatial rendering.

  3. Channel Layout: For multi-channel audio files, ensure the channel layout is written into the file. RealityKit can handle layouts like Quadriphonic, which spreads channels equidistantly around the listener.

  4. Loading Strategy: You can set the loading strategy to stream or preload. Streaming reduces memory usage but may incur additional latency, which is suitable for large ambient files.

  5. Ambient Audio Component: Use the ambient audio component for music playback, which is rendered with three degrees of freedom (source and head rotations are observed, but translation is not).

For more detailed steps and examples, you can refer to the session Enhance your spatial computing app with RealityKit audio.