filter_fir :
A finite impulse response filter.

The filter_fir primitive is a discrete-time filter with a finite impulse response. It decides the output value based on N previous inputs and its discrete-time impulse response as follows:

    out[n] = data[0]*x[n] + data[1]*x[n-1] + ... + data[N-1]*x[n-N+1]

    where x[n] = -0.5 for in[n] = 0
                  0.5 for in[n] = 1

Input/Output Terminals

Name	I/O	Type	Description
out	output	xreal	analog output
in	input	xbit	digital input
trig	input	xbit	trigger input

Parameters

Name	Type	Default	Unit	Description
data	real array	‘{1.0}	None	filter coefficients
tran_time	real	0.0	seconds	transition time