Utilising AI Analysis of Sounds To prEdict heaRt failurE decOmpensation

Inclusion Criteria

Inclusion Criteria: * Male or Female, aged 18 years or above. * Diagnosed with chronic stable heart failure NYHA Class 3 or 4 (either during most recent cardiology/heart failure clinic visit, or ADHF during recent/current hospitalization). * Participant is willing and able to give informed consent for participation in the study. * Participant has a smartphone device and can download a purposely designed mobile application on their phone (with guidance from the study investigators) or is willing to have sound recordings via a smartphone device loaned for the purpose of the study. Exclusion Criteria: * Unable to provide consent * Patients requiring continuous oxygen therapy at flow rates that cannot be provided through nasal cannula * Patients with currently known pneumonia * Patients with known significant pulmonary disease including asthma, COPD, pulmonary fibrosis/interstitial lung disease, pulmonary hemorrhage. * Patients with current Pulmonary embolus * Patients with other intercurrent acute symptomatic illness (e.g., viral/bacterial infection) at time of recording * Patients requiring continuous oxygen therapy at flow rates that cannot be provided through nasal cannula * Patients with tracheostomy or who have undergone a surgical procedure to the head/neck/larynx which would affect the normal functioning of the vocal cords. * Aphasic * Patients excluded at PI discretion