6 Time and frequency characterization of s&s 6. Time and Frequency Characterization of Signals and Systems 6.1 The Magnitude-phase Representation of the Fourier transform For signal x(t):x(o<X(jo) X(o=Y(o)le/zoo LXGOI Magnitude spectrum Phase spectrum6 Time and frequency characterization of S&S 6.1 The Magnitude-phase Representation of the Fourier Transform For signal x(t) : 6. Time and Frequency Characterization of Signals and Systems x(t) X( j) ⎯F → ( ) ( ) | ( )|    j X j X j X j e  = e Phase Spectrum X j Magnitude Spectrum j X j − − − − − −  ( ) | ( )|  