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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.
Adventitious Breath Sounds: Name: Description: Cause: Location: Crackles (rales) Fine, short, interrupted crackling sounds; alveolar rales are high pitched. Sound can be simulated by rolling a lock of hair near the ear. Best heard on inspiration, but can be heard on both inspiration and expiration. May not be cleared by coughing. Air passing through fluid or mucus in any air passage: Most commonly heard in the bases of the lower lung lobes: Gurgles (rhonchi) Continuous, low-pitched, coarse, gurgling, harsh, louder sounds with a moaning or snoring quality. Best heard on expiration, but can be heard on both inspiration and expiration. May be altered by coughing.