7.2. 1 Windows function method o Where the Fourier coefficients are precisely the corresponding impulse response samples and are given by hleoeondo 0<n<O 2丌7.2.1 Windows function method  Where the Fourier coefficients are precisely the corresponding impulse response samples and are given by   ( ) 1 , 2 j j n d d h n H e e d n       − = −     