Differentiation of Asthma/COPD Exacerbation and Stable State Using Automated Lung Sound Analysis With LungPass Device

Inclusion Criteria: For COPD patients: * Patients able and willing to sign an informed consent to participate in the study; * Patient is aged 40 years or older with a smoking history of ≥10 pack years; * Patients with COPD confirmed previously by a detailed medical history and examination; * Patients presenting with moderate or severe exacerbation of chronic obstructive pulmonary disease. * Patient is treated by a monotherapy long-acting muscarinic antagonist (LAMA), or LAMA plus long acting beta2-agonist (LABA), or inhaled corticosteroid (ICS) plus LABA, or LAMA plus LABA plus ICS. For asthma patients: * Patients able and willing to sign an informed consent to participate in the study; * Patient is aged 3 years or older; * Patients with asthma confirmed previously by a detailed medical history and examination; * Patients presenting with moderate or severe exacerbation of asthma; * Patient is treated by a monotherapy ICS or ICS plus LABA or other controllers. Exclusion Criteria: * Age up to 3 years for asthma patients and up to 40 years for COPD patients; * Patient refusal to participate in the study; * Patients with subcutaneous emphysema, with damaged skin on the surface of the chest, with drainage in the pleural space, patients undergoing mechanical ventilation; * Patients with asthma-COPD overlap or presence of other known chronic lung conditions such tuberculosis, cystic fibrosis or clinically significant bronchiectasis; * Mental illness, other known acute diseases or known chronic decompensated diseases, such as a known active malignancy or severe heart failure, other known ongoing infection.