Table 3 Quantitative result of the formant analysis
From: Unconstrained snoring detection using a smartphone during ordinary sleep
Type of sound | Value (mean ± SD) | ||||
|---|---|---|---|---|---|
f max(F)[Hz] | f 1[Hz] | m 1[AU] | m max(F)[AU] | Number of formants | |
Alarm | 1433 ± 920 | 772 ± 709 | 1.89 ± 6.10 | 2.59 ± 7.07 | 4.8 ± 3.3 |
Cough | 710 ± 960 | 289 ± 140 | 1.81 ± 3.67 | 1.96 ± 3.63 | 5.2 ± 2.9 |
Door | 175 ± 5 | 175 ± 5 | 0.44 ± 0.05 | 0.44 ± 0.05 | 9.7 ± 2.9 |
Fan | 255 ± 4 | 255 ± 4 | 0.82 ± 0.06 | 0.82 ± 0.06 | 4.2 ± 0.4 |
Radio | 1219 ± 601 | 509 ± 292 | 0.37 ± 1.22 | 0.51 ± 1.21 | 7.1 ± 2.9 |
Music | 1193 ± 598 | 790 ± 359 | 0.79 ± 1.49 | 0.10 ± 0.15 | 4.8 ± 2.7 |
Talking | 368 ± 96 | 274 ± 54 | 0.50 ± 1.00 | 0.06 ± 0.10 | 3.2 ± 1.8 |
Footstep | 189 ± 11 | 189 ± 11 | 0.07 ± 0.02 | 0.07 ± 0.02 | 3.0 ± 1.1 |
Snoring | 522 ± 600 | 231 ± 56 | 0.12 ± 0.28 | 0.22 ± 0.34 | 4.2 ± 2.3 |