特征名称

计算公式

$Mean$

$\mu ={\displaystyle {\sum }_{i=1}^N{s}_i}/N$

$Max$

$Max=\max \left(s_i\right)$

$Min$

$Min=\min \left(s_i\right)$

$Peak$ Math_23#

$PV=\max \left(s_i\right)-\min \left(s_i\right)$

$Variance$

${\sigma }^2={\displaystyle {\sum }_{i=1}^N{\left(s_i-\mu \right)}^2/N}$

$RMS$

$RMS=\sqrt{{\displaystyle {\sum }_{i=1}^N{s}_i{}^2}/N}$

$Kurt$

$Kurt={{\displaystyle {\sum }_{i=1}^N\left(\left(s_i-\mu \right)/\sigma \right)}}^4/N-3$

$Skew$

$Skew={\displaystyle {\sum }_{i=1}^N\left(\left(s_i-\mu \right)/{\sigma }^3\right)/N}$

$MAV$

$MAV={\displaystyle {\sum }_{i=1}^N\left|s_i\right|}/N$