Coarse crackles often suggest larger airway disruptions such as mucus or severe fluid accumulation. 4 Are rales serious? Rales can be a sign of serious conditions, warranting further investigation and treatment. 4 How can crackles be distinguished from other lung sounds? Crackles are distinctive as ...
Applying the WTST-NST filter to fine/coarse crackles and squawks, selected from three lung sound databases, the coherent structure of the DAS is revealed and they are separated from VS. When compared to other separation tools, in noiseless case, the WTST-NST filter performed more accurately,...