With one key stroke the computer automatically analyses acoustic energy vs. time and detects crackles, wheezes and rhonchi. Derived measures of the sound characteristics are displayed on an anatomical diagram to allow visualization of the spatial distribution of lung function and abnormalities. Further information on the overall amplitude of breath sounds, timing of the abnormalities, and crackle and wheeze counts is included in this display. Differences in abnormal patterns among different diseases become apparent in this context.