AirPods Pro 3 could be Apple’s next big health, fitness bet: What to expect

Apple has published a new research paper in collaboration with the University of North Carolina, detailing how it is using an in-house artificial intelligence model—CLAP (Contrastive Language-Audio Pretraining)—to estimate heart rate using acoustic data, such as stethoscope recordings. Originally developed for automatic speech recognition, CLAP was retrained by Apple using publicly available phonocardiogram (PCG) datasets to classify heart-related sounds and output beats-per-minute (BPM) estimates.