Fig. 6: Mechanisms and devices for multi-signal sensing.

a Schematic diagram showing how concurrent and time-synced data uploading and processing allows new physiological phenomena to be monitored. b Systolic and diastolic blood pressure derivation from timing differences between fiducials from ECG, SCG, and PPG waveforms. Reproduced under the terms of the Creative Commons CC BY 4.0 license from ref. ⁹⁶. c Binodal multi-signal system that tracks ECG, PPG, SCG, and temperature. Reproduced with permission¹⁷. Copyright 2020, Springer Nature. d Dual-mic setup with one towards the body and another towards the environment allows real-time noise canceling and audio reconstruction (right) even in noisy environment (left). Reproduced with permission⁸⁰. Copyright 2020, Springer Nature. e) Multi-device IMU system (left) that allows body position reconstruction (right). Reproduced with permission⁸². Copyright 2020, Springer Nature.