DCT¶
standard mode | Standard category
Inputs¶
array
(vector_real) - the input array
Outputs¶
dct
(vector_real) - the discrete cosine transform of the input array
Parameters¶
dctType
(integer ∈ [2, 3], default = 2) :the DCT type
inputSize
(integer ∈ [1, ∞), default = 10) :the size of the input array
liftering
(integer ∈ [0, ∞), default = 0) :the liftering coefficient. Use ‘0’ to bypass it
outputSize
(integer ∈ [1, ∞), default = 10) :the number of output coefficients
Description¶
This algorithm computes the Discrete Cosine Transform of an array. It uses the DCT-II form, with the 1/sqrt(2) scaling factor for the first coefficient.
Note: The ‘inputSize’ parameter is only used as an optimization when the algorithm is configured. The DCT will automatically adjust to the size of any input.
- References:
[1] Discrete cosine transform - Wikipedia, the free encyclopedia, http://en.wikipedia.org/wiki/Discrete_cosine_transform
Source code¶
See also¶
DCT (streaming)