ffilt - coefficients of FIR low-pass

Calling Sequence

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

Parameters

• 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

Author

C. B.