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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.
Theyâre listening for abnormal lung sounds such as bibasilar crackles, or rales. These sounds indicate something serious is happening in your lungs. Bibasilar crackles are a bubbling or crackling sound originating from the base of the lungs. They may occur when the lungs inflate or deflate. Theyâre usually brief, and may be described as sounding wet or dry. Excess fluid in the airways causes these sounds.