Basics of Lung Sounds Crackles - Coarse (Rales) Coarse crackles are discontinuous, brief, popping lung sounds. Compared to fine crackles they are louder, lower in pitch and last longer. They have also been described as a bubbling sound. You can simulate this sound by rolling strands of hair between your fingers near your ear. play pause Position: Chest wall Chestpiece: Diaphragm Maneuver: Seated Waveform Skin and Ribs Blended View Lungs Move slider to reveal lungs Table of Contents 1Vesicular - Normal 2Crackles - Fine (Rales) 3Crackles - Coarse (Rales) 4Wheeze 5Rhonchi - Low Pitched Wheezes 6Bronchial 7Pleural Rubs 8Bronchovesicular Practice Drill