System object: dsp.FIRDecimator
Decimate input by integer factor
Y = step(
Starting in R2016b, instead of using the
to perform the operation defined by the System
object™, you can
call the object with arguments, as if it were a function. For example,
= step(obj,x) and
y = obj(x) perform
Y = step( outputs
the filtered and downsampled values,
Y, of the
X. A Ki-by-N input
matrix is treated as N independent channels. The
length of each column must be a multiple of the
value. The FIR decimator operates on each channel separately and generates
a Ko-by-N output matrix where Ko
= Ki/M with M the decimation factor.
The object supports real and complex floating-point and fixed-point
inputs, except for complex unsigned fixed-point inputs.
obj specifies the System
which to run this
The object performs an initialization the first time the
is executed. This initialization locks nontunable
properties (MATLAB) and input specifications, such as dimensions, complexity,
and data type of the input data. If you change a nontunable property
or an input specification, the System
object issues an error.
To change nontunable properties or inputs, you must first call the
to unlock the object.