SineTransform Class 
Namespace: Accord.Math
Name  Description  

DST(Double) 
Forward Discrete Sine Transform.
 
DST(Double) 
Forward Discrete Sine Transform.
 
IDST(Double) 
Inverse Discrete Sine Transform.
 
IDST(Double) 
Inverse Discrete Sine Transform.

In mathematics, the discrete sine transform (DST) is a Fourierrelated transform similar to the discrete Fourier transform (DFT), but using a purely real matrix. It is equivalent to the imaginary parts of a DFT of roughly twice the length, operating on real data with odd symmetry (since the Fourier transform of a real and odd function is imaginary and odd), where in some variants the input and/or output data are shifted by half a sample.
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