Journal of Healthcare Engineering

Research Article

Performance of Adaptive Noise Cancellation with Normalized Last-Mean-Square Based on the Signal-to-Noise Ratio of Lung and Heart Sound Separation

Table 6

SNR after applying the designed algorithm for an abnormal LSS case.
LSS# values
24816326412825651210242048
(dB)
LSA20.111−45.43−38.31−34.66−16.16−24.08−19.57−15.43−15.09−11.04−5.06−1.05
0.036−45.43−40.01−32.09−29.44−13.39−20.63−16.99−15.34−3.65−7.40−2.16
0.022−28.12−40.01−32.75−29.44−24.66−18.93−13.87−10.41−3.41−2.84−3.08
0.016−45.43−40.01−19.56−19.31−24.66−17.19−16.99−15.34−11.04−7.95−3.95
LSA40.037−35.28−42.26−40.03−34.64−16.15−24.17−17.89−15.35−14.04−11.12−3.80
0.028−51.46−45.66−37.56−34.64−26.35−24.40−11.74−13.11−13.46−11.12−4.45
0.025−51.46−44.18−39.50−31.80−29.32−13.80−19.17−18.29−14.04−3.80−4.79
0.010−37.72−41.70−40.03−34.64−16.15−23.30−20.41−18.29−6.95−7.40−8.00
LSA60.100−106.11−101.49−95.90−83.13−82.24−79.34−75.47−56.85−42.00−43.41−32.31
0.039−101.38−113.39−89.27−83.13−86.10−83.84−65.40−48.74−41.56−36.56−40.06
0.037−101.38−115.35−109.27−103.13−89.80−87.29−82.06−58.56−57.56−47.07−40.58
0.017−102.41−95.35−95.59−100.87−80.84−70.46−64.75−48.74−57.63−36.11−46.87