The IDCT
object computes the inverse discrete
cosine transform (IDCT) of an input.
To compute the IDCT of an input:
Define and set up your IDCT object. See Construction.
Call step
to compute the IDCT of an input according
to the properties of dsp.IDCT
. The behavior of step
is
specific to each object in the toolbox.
Note:
Starting in R2016b, instead of using the 
idct = dsp.IDCT
returns
a inverse discrete cosine transform (IDCT) object, idct
.
This object computes the IDCT of a real or complex input signal using
the Table lookup
method.
idct = dsp.IDCT('
returns
an inverse discrete cosine transform (IDCT) object, PropertyName
',PropertyValue
,...)idct
,
with each property set to the specified value.

Method to compute sines and cosines Specify how the IDCT object computes the trigonometric function
values as 
step  Inverse discrete cosine transform (IDCT) of input 
Common to All System Objects  

clone  Create System object with same property values 
getNumInputs  Expected number of inputs to a System object 
getNumOutputs  Expected number of outputs of a System object 
isLocked  Check locked states of a System object (logical) 
release  Allow System object property value changes 
This object implements the algorithm, inputs, and outputs described on the IDCT block reference page. The object properties correspond to the block parameters.