Research Article
Fetal Heart Rate Monitoring from Phonocardiograph Signal Using Repetition Frequency of Heart Sounds
Table 2
Performance comparison.
| Record number | SNR (dB) | The proposed method | Rule-based method [16] | Advanced method [14] |
| 1 | −4.4 | 92.3% | 95.4% | 96.2% | 2 | −6.6 | 91.9% | 95.4% | 96.1% | 3 | −8.1 | 90.1% | 94.1% | 96.3% | 4 | −10.2 | 89.1% | 90.3% | 94.5% | 5 | −14.8 | 89.7% | 82.6% | 90.4% | 6 | −17.2 | 90.1% | 60.8% | 86.7% | 7 | −20.1 | 88.5% | — | 82.4% | 8 | −23.8 | 88.8% | — | 63.6% | 9 | −25.6 | 82.0% | — | — | 10 | −26.7 | 81.0% | — | — |
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Note: (a) the accuracy rate is defined in (9). (b) “—” means that so many heart sound burst pairs were missed that the accuracy rate was very low.
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