ffilt

coefficients of FIR low-pass

Calling Sequence

[x]=ffilt(ft,n,fl,fh)

Arguments

:ft filter type where ft can take the values

:”lp” for low-pass filter : :”hp” for high-pass filter : :”bp” for band-pass filter : :”sb” for stop-band filter :

: :n integer (number of filter samples desired) : :fl real (low frequency cut-off) : :fh real (high frequency cut-off) : :x vector of filter coefficients :

Description

Get n coefficients of a FIR low-pass, high-pass, band-pass, or stop- band filter. For low and high-pass filters one cut-off frequency must be specified whose value is given in fl. For band-pass and stop-band filters two cut-off frequencies must be specified for which the lower value is in fl and the higher value is in fh