[ O(t) = \begincases \textkeycode_n & \textif M(t)=1 \text and rising edge detected \ \alpha \cdot F(t) + \beta & \textif M(t)=0 \endcases ]
[ M(t) = \begincases 1 & \textif F(t) > \theta_\texthigh \text and M(t-\Delta t)=0 \ 0 & \textif F(t) < \theta_\textlow \text and M(t-\Delta t)=1 \ M(t-\Delta t) & \textotherwise \endcases ] softandkeys
Where ( \theta_\texthigh > \theta_\textlow ) (hysteresis band). The output ( O(t) ) is: [ O(t) = \begincases \textkeycode_n & \textif M(t)=1