dfilt.dffir - Discrete-time, direct-form, FIR filter
Syntax
Hd = dfilt.dffir(b)
Hd = dfilt.dffir
Description
Hd = dfilt.dffir(b) returns
a discrete-time, direct-form finite impulse response (FIR) filter, Hd,
with numerator coefficients, b.
Hd = dfilt.dffir returns
a default, discrete-time, direct-form FIR filter, Hd,
with b=1. This filter passes the input through
to the output unchanged.
The resulting filter states column vector is
Examples
Create a direct-form FIR discrete-time filter with coefficients
from a 30th order lowpass equiripple design:
b = firpm(30,[0 .1 .2 .5]*2,[1 1 0 0]);
Hd = dfilt.dffir(b)
Hd =
FilterStructure: 'Direct-Form FIR'
Numerator: [1x31 double]
PersistentMemory: false
See Also
dfilt, dfilt.dfasymfir, dfilt.dffirt, dfilt.dfsymfir
 | dfilt.dfasymfir | | dfilt.dffirt |  |
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