Wavelets Application in Prediction of Friction Stir Welding Parameters of Alloy Joints from Vibroacoustic ANN-Based Model

Table 2

Selected input of ANN.

Factor	Vibroacoustic parameter	Symbol
𝑥1	Median of vibroacoustic signal	𝑀𝑉
𝑥2	RMS of vibroacoustic signal	RMS𝑉
𝑥3	Median of A8 DWT	𝑀𝐴8
𝑥4	RMS of A8 DWT	RMS𝐴8
𝑥5	Median of D8 DWT	𝑀𝐷8
𝑥6	RMS of D8 DWT	RMS𝐷8
𝑥7	RMS of D7 DWT	RMS𝐷7
𝑥8	RMS of D5 DWT	RMS𝐷5
𝑥9	RMS of D4 DWT	RMS𝐷4
𝑥10	Median of D1 DWT	𝑀𝐷1