Note: This page has been translated by MathWorks. Click here to see

To view all translated materials including this page, select Country from the country navigator on the bottom of this page.

To view all translated materials including this page, select Country from the country navigator on the bottom of this page.

Window-based FIR filter design

`b = fir1(n,Wn)`

`b = fir1(n,Wn,ftype)`

`b = fir1(___,window)`

`b = fir1(___,scaleopt)`

`fir1`

uses a least-squares approximation to
compute the filter coefficients and then smooths the impulse response
with `window`

.

[1] Digital Signal Processing Committee of the
IEEE Acoustics, Speech, and Signal Processing Society, eds. *Programs
for Digital Signal Processing*. New York: IEEE Press, 1979,
Algorithm 5.2.

`cfirpm`

| `designfilt`

| `filter`

| `fir2`

| `fircls`

| `fircls1`

| `firls`

| `firpm`

| `freqz`

| `hamming`

| `kaiserord`

| `window`