RecurrenceFilter

RecurrenceFilter[{α,β},x] filters x using a linear recurrence equation with coefficients α and β.

RecurrenceFilter[tf,x] uses a discrete-time filter defined by the TransferFunctionModel tf.

RecurrenceFilter[…,x,{y0,y-1,…}] uses a specified list {y0,y-1,…} as the initial condition.

RecurrenceFilter[…,image] filters image.

RecurrenceFilter[…,sound] filters sampled sound object.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.