Table 5 Frequency domain features for patients with dysphagia performing viscous swallows
From: Dysphagia and its effects on swallowing sounds and vibrations in adults
| Â | Non-stroke | Stroke | ||||
|---|---|---|---|---|---|---|
A–P | S–I | Sounds | A–P | S–I | Sounds | |
Peak frequency (Hz) | 10.53 ± 22.95 | 10.02 ± 12.65 | 64.03 ± 217.5 | 21.07 ± 54.81 | 19.55 ± 48.17 | 59.36 ± 199.0 |
Center frequency (Hz) | 93.42 ± 301.3 | 32.27 ± 23.70 | 850.4 ± 1289 | 132.5 ± 315.1 | 34.34 ± 67.53 | 788.5 ± 1242 |
Bandwidth (Hz) | 202.7 ± 557.1 | 63.60 ± 68.09 | 615.3 ± 762.6 | 283.6 ± 518.1 | 82.99 ± 116.7 | 666.4 ± 824.2 |
Wavelet entropy | 0.625 ± 0.637 | 0.946 ± 0.693 | 0.908 ± 0.786 | 0.568 ± 0.610 | 0.719 ± 0.545 | 0.801 ± 0.794 |