Spatial sound isn’t just about how rooms behave — it’s about how listeners move. To simulate this in real time, I integrated Apple’s CMHeadphoneMotionManager into the app. This allows the orientation data (yaw, pitch, roll) from AirPods Pro to be sent via OSC (Open Sound Control) to spatial audio engines like Reaper with the IEM Plugin Suite.
With this data, users can rotate their head and hear the soundfield respond — just like in real acoustic environments. A calibration feature lets users define their “neutral” forward direction, while rate-limiting and reconnection logic ensure stable use in real setups.
This is more than a feature. It’s a step toward interactive listening, where movement, sound, and space become part of one fluid experience.
