Table 1.

Characteristics of each database.

ID1	ID2	ID3	ID4	ID5	ID6	ID7	ID8	ID9
P1	48	5–24	721	[0–9]	[4–16]	496	[1–8]	92
T1H	16	7–22	251	5	[6–14]	126	[1–5]	41
T1M	16	7–22	251	0	[6–14]	126	[1–5]	41
T1L	16	7–22	251	−5	[6–14]	126	[1–5]	41

ID1: identifier; ID2: number of recordings captured from unhealthy subjects; ID3: the shortest and longest duration, in seconds, captured from recordings; ID4: total duration in seconds; ID5: the lowest and highest SNR, in dB, between WS and RS; ID6: the minimum and maximum number of respiratory events found in the recordings; ID7: the total number of respiratory events; ID8: the minimum and maximum number of wheezes found in the recordings; ID9: the total number of wheezes.