Smartphone as an electronic stethoscope: factors influencing heart sound quality .

Hongxing LuoPablo LamataSalomé BazinThea BautistaNatsuki BarclayMehrdad ShahmohammadiJolijn M LubrechtTammo DelhaasFrits W Prinzen
Published in: European heart journal. Digital health (2022)
Smartphone can be used by non-medical users to record heart sounds in good quality. Age may affect heart sound recording, but hardware, sex, and BMI do not alter the recording.