The modulating transform defines the relationship between 512 real values and the

for k = 0 to 511.

The encoder and scaler, see figure , generate only 255 complex values of (plus zero at dc, and one real value if the Nyquist frequency is used). In order to generate real values of these values shall be augmented so that the vector has Hermitian symmetry.

Mon Mar 6 12:47:27 EET 1995