synthesis Compute a signal from its short-time Fourier transform X= synthesis(Y,C) Y: Shirt-time fourier transform C: 3-element vector C specifying window size, increment, window type. Compute a signal from its short-time Fourier transform Y and a 3-element vector C specifying window size, increment, and window type. The values Y and C can be derived by [Y, C] = stft (X , ...)