Abstract: Medical apparatus (20) includes an auscultation pickup unit (26) configured to sense acoustic waves emitted from a body of a subject (24) and to output signals in response thereto. Processing circuitry (40, 42, 44, 50) is configured to collect the signals output while the auscultation pickup unit contacts multiple locations on the body of the subject, including a respective signal acquired at each contacted location, to extract from each of the signals features of breath sounds of the subject, to compute multiple local scores including a respective local score for each contacted location based on the features extracted from the respective signal, and to classify a respiratory condition of the subject by combining the multiple local scores.