Motion measurements Angle measurement 2 Audition 2 Coherent light 2 Long coherence length 2 Metadata 2 Optical axis 2 Optical tomography 2 Otic capsules 2 Phase-sensitive optical coherence tomographies 2 Stand -alone 2 Three channel 2 Tomography system 2 Vibratory response 2 Vibrometry 2 Goniometer 1 Goniometers 1 Goniometry 1 Handhelds 1 Instrument testing 1 Joint angle 1 Measurement errors 1 Mpu-6050 1 Patient treatment 1 Physical therapy 1 Range of motion 1 Range of motion (rom) 1 Range-of-motion 1 Raspberry pi pico 1 Sensor technologies 1