![]() You can use CMHeadphoneMotionManager to stream device motion from audio products that support spatial audio with dynamic head tracking, like AirPods Pro, to a connected iOS, iPadOS, or macOS device. And starting this year, it's also coming to macOS 14. Let's go through some details.ĬMHeadphoneMotionManager was first made available in iOS and iPadOS 14. And now, this year, CMHeadphoneMotionManager is coming to macOS. Head tracking unlocked a lot of cool features, from gaming to fitness applications. By streaming attitude, user acceleration, and rotation rate data to a connected iOS or iPadOS device, you could track the way your head moves. When CMHeadphoneMotionManager was introduced a couple years ago, the same data that made dynamic head tracking possible was made available to you. Dynamic head tracking relies on the same device motion algorithms that live on iPhone and Apple Watch. Not too long ago, spatial audio with dynamic head tracking changed the way we experience music and movies. Now that I've given you a brief overview of some of the sensors that are involved, I'll go over getting motion data from audio products like AirPods, getting water submersion data updates, and finally, a new way to stream higher rate sensor data. ![]() These are just some of the many applications that are possible, and we always look forward to seeing how you leverage CoreMotion. Features that keep us safe by detecting when you've been in a car crash or when you've fallen, also rely on tracking movement using those same sensors. It supports experiences that rely on the orientation of the device, like with a stargazing app to explore the stars in our sky. These include things like tracking the number of steps you've taken that day and how many calories you've burned during a workout. Generating an idea of a device's movement is fundamental to many of the features we enjoy. Together, they help track how the device moves and orients in space. Its built-in sensors include an accelerometer, which measures acceleration, a gyroscope, which measures rotation, a magnetometer, which measures the magnetic field, and a barometer, which measures pressure. Many of Apple's devices use built-in sensors to help create a notion of their movement through space. In this session, I'll focus on some of the newer ways you can interact with motion data, but before I get to what's new, I'd like to give you a quick reminder of the sensors that generate motion data.Ĭapturing the way a device moves is central to how we experience them. With CoreMotion, you can take advantage of these improvements in your own apps too. Crash detection, fall detection, and spatial audio are just some of the features that rely on improved sensing capabilities. As our hardware has advanced, so has our ability to capture motion information. CoreMotion serves as a central framework to access motion data from inertial sensors. ![]() I'm excited to tell you about some cool updates to CoreMotion. ♪ ♪ Erin: Hi! My name is Erin, and I'm an Engineer on the CoreMotion team.
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