Discrete-Time Fourier Transform The tFTs of some sequences exhibit discontinuities of 2T in their phase responses An alternate type of phase function that is a continuous function of o is often used It is derived from the original phase function by removing the discontinuities of 2丌 Copyright C 2001, S K MitraCopyright © 2001, S. K. Mitra 7 Discrete-Time Fourier Transform • The DTFTs of some sequences exhibit discontinuities of 2 in their phase responses • An alternate type of phase function that is a continuous function of w is often used • It is derived from the original phase function by removing the discontinuities of 2