Terminology

Explosive sound

0.5 second audio snippet captured by the app (coughs and non-coughs)

Activated

Participant for whom at least 5 minutes of longitudinal tracking has been registered

Elicited

Forced or voluntary cough such as those which (a) take place during "onboarding" or (b) are collected via the "Elicit coughs" feature (ie, "non-onboarding elicited coughs)"

Onboarding

The initial coughs collected from a participant at enrollment, prior to "longitudinal" monitoring

Longitudinal

The continuous monitoring period after onboarding

Heartbeat

A signal, generated every ten minutes, to indicate that the app is actively tracking coughs longitudinally (used to determine tracked person-time)