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+/* * input I is a folded spectrum of length N; output O and * synthesis window W are of length Nw--overlap-add windowed, * unrotated, unfolded input data into output O */ #include "fftease.h" void overlapadd( float *I, int N, float *W, float *O, int Nw, int n ) { int i ; while ( n < 0 ) n += N ; n %= N ; for ( i = 0 ; i < Nw ; i++ ) { O[i] += I[n]*W[i] ; if ( ++n == N ) n = 0 ; } } \ No newline at end of file