Scilab Function

ffilt - coefficients of FIR low-pass

### Sequence d'appel

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

### Parametres

- `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`

### Auteur

C. B.