DCT
Discrete Cosine Transform (DCT) of the input signal.
Description
The DCT block calculates the unitary discrete cosine transform (DCT) of the input signal . If the input signal is a matrix of to , the block calculates the DCT transform of each channel in the matrix.
Ports
Input
#
IN_1
—
input signal
vector | matrix M by N | array
Details
Specify the input signal as a vector, a matrix by or an array.
For all input arrays, the block calculates DCT transformations on the first dimension. The size of the first dimension (frame size) must be equal to a power of two. To work with other frame sizes, use the Pad block to fill or truncate the frame size to a length equal to a degree of two.
If the input to the DCT block is a matrix to , the block treats each input column as an independent channel containing consecutive samples.
| Data types |
|
| Complex numbers support |
Yes |
Output
#
OUT_1
—
output DCT converted signal
vector | matrix M by N | array
Details
Output DCT converted signal as vector, matrix by or array.
If the block outputs a matrix to , the -th column of the matrix contains the length of the corresponding input column.
where
| Data types |
|
| Complex numbers support |
Yes |