chapter 2 discrete time signals systems cwlin ee nthu edu tw 03 5731152 discrete time signals signals are represented as sequences of numbers called samples sample value of a typical ...
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...Chapter discrete time signals systems cwlin ee nthu edu tw are represented as sequences of numbers called samples sample value a typical signal or sequence denoted x with n is defined only for integer values and undefined non representation functional xnnn tabularrepresentation sequencerepresentation digital processing graphical sampling speech xnx nt basic unit un k step nk nu nun ramp unnn r real exponential xna complex j nj naae e ancos jsin nxnjxn ri cos sin i nxnjxnxnxn nanr nn...