Fig. 4 | npj Digital Medicine

Fig. 4

From: Contactless cardiac arrest detection using smart devices

Fig. 4

Benchmark testing of agonal breathing sounds across different scenarios. Mean detection accuracy of smart speaker and smartphone (a) across distance (b) in the presence of other interfering indoor and outdoor sounds. c, d With acoustic interference cancellation a smartphone or smart speaker can reduce the effects of its own audio transmissions and become more sensitive at detecting agonal breathing signals. The left and right subplots show the detection accuracy when interfering sounds are played at soft (45 dBA) and loud (67 dBA) volumes, respectively. Solid and dashed lines indicate detection accuracy with and without interference cancellation, respectively. Error bars indicate the standard deviation accuracy across validation folds

Back to article page