Quality Depend on: frequency and intensity o sound wave Related to: pathology and hemodynamic changes of the heart Soft harsh musical SM: blowing, harsh, musical(seagull DM: blowing, sigh-like, rumbling. Mr CM: machine-like. hum• Quality – Depend on: frequency and intensity of sound wave – Related to: pathology and hemodynamic changes of the heart – Soft harsh, musical. – SM: blowing, harsh, musical (seagull) – DM: blowing, sigh-like, rumbling. – CM: machine-like, hum