Table 9 Classification results of normal and abnormal of the proposed methods and other literature in PCCD.

From: Multi-level feature encoding algorithm based on FBPSI for heart sound classification

Methods

Acc (%)

Spe (%)

Pre (%)

UAR (%)

F1 (%)

PSD-CNN9

84.72

94.63

–

77.63

–

WST + CWT & 1D CNN + 2D CNN15

98.57

98.00

98.00

98.00

98.00

DNN + stem_block + attention + DWconv16

97.70

92.22

98.98

98.20

98.59

42 MFCCs-KNN17

95.78

–

–

–

96.00

12 statistical features-SVM18

97.78

97.78

–

97.78

–

CTENN21

96.40

97.40

–

92.87

95.16

Conv-Encoder22

97.90

96.50

98.80

98.40

–

PIFS-ResNet1823

85.00

–

–

–

86.00

Our method—FBPSI + MLFE-EBTC

98.73

95.65

98.88

99.53

99.21