Circular convolution using DCT and DST: b=DST1e(a) - File Exchange - MATLAB Central

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Circular convolution using DCT and DST

DST2e(x) Calculation of DST2e using DCT2e.
b=DCT2e(a)
b=DST1e(a)
dsC2e=dC2e(s)
dsS2e=dS2e(s)
f=DCT1e(x) Reference "The Transforms and Applications Handbook" chapter 3,
CircularConvolutionUsingDCTan...
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from Circular convolution using DCT and DST by Reju VG
circular convolution using Discrete sine and cosine transforms

b=DST1e(a)
function b=DST1e(a) b=dst(a); b=2*b;