Table 2 Characteristics of the 3950 breathing sounds from 23 patients.

From: Breathing sounds analysis system for early detection of airway problems in patients with a tracheostomy tube

 

Normal sound (NS)

Vibrant sound (VS)

Sharp sound (SS)

Total

Number of breathing sounds (%)

1449 (36.7)

1313 (33.2)

1188 (30.1)

3950 (100)

Number per person (mean ± SD)

63 ± 38.8

57.1 ± 57.0

51.6 ± 43.9

171.7 ± 75.0

Time per 1 cycle of respiration (mean ± SD) (sec)

3.801 ± 1.592

3.033 ± 0.949

3.876 ± 1.246

3.484 ± 1.292

  1. All breathing sounds were segmented by respiratory cycle and classified into three categories: normal breathing sounds (NS), vibrant breathing sounds (VS), and sharp breathing sounds (SS).
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