专访 AirPods 团队：一只小小的耳机，如何学会追踪 50 种运动？

Core Insights - The article discusses the advancements in heart rate monitoring technology with the introduction of AirPods Pro 3, which achieves accuracy comparable to traditional chest straps [1][4][10] - It highlights the innovative use of the ear canal as a more effective physiological signal collection point compared to the wrist, leveraging infrared light PPG technology [5][7][8] - The integration of multiple sensors and algorithms allows AirPods Pro 3 to accurately track various physical activities and heart rate in real-time [15][16][17] Group 1: Technology and Innovation - AirPods Pro 3 can monitor heart rate with precision, matching the accuracy of chest straps, especially during steady-state and interval running [1][3] - The device utilizes infrared light PPG for heart rate monitoring, which is more effective than traditional green LED light sources used in most wearables [7][10] - The combination of heart rate data with motion data from accelerometers and gyroscopes enhances the accuracy of heart rate readings during various physical activities [8][15] Group 2: Market Position and Competitive Edge - Apple aims to position AirPods Pro 3 as a comprehensive fitness device, comparable to the Apple Watch, by understanding user activities and calorie expenditure [14][16] - The development of a Motion Foundation Model, trained on extensive real-world data, enables the device to recognize over 50 different types of exercises [16][17] - The collaboration between AirPods and Apple Watch is designed to complement each other, providing a more complete digital representation of the user's body [9][10] Group 3: User Experience and Design - The design of AirPods Pro 3 focuses on achieving a snug fit, which is crucial for accurate physiological monitoring [10][11] - The device's ability to filter out external noise while monitoring internal signals reflects Apple's philosophy of technology enhancing human perception [17] - The advancements in sound quality and physiological monitoring capabilities indicate a shift in how audio devices are perceived, moving from mere sound output to becoming sensors for self-awareness [17]