digital signal processing ciira wa maina ciira maina dkut ac ke 1 summary this lecture will focus on 1 sampling continuous time signals 2 frequency domain representation of sampling 3 ...
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...Digital signal processing ciira wa maina dkut ac ke summary this lecture will focus on sampling continuous time signals frequency domain representation of the theorem reconstruction from samples over last few decades there has been a move towards transmission analog therststepincreating an one involves x t at regular intervals to form discrete are dened times only indexed by integers thus is sequence numbers where nth number denoted when arises we have nt s known as period two dierent can result in same after means that appropriate rate must be chosen allow sample values quantized into mathematically represent sampled product and impulse train dirac delta functions given nts n sifting property function order derive fourier transform note it therefore xs f denotes convolution recall if periodic formed pulses pulse whose since nf bandlimited with bandwidth w hertz spectrum shown figure fs see replicas do not overlap recovered ideal low pass lter copies no longer recover via ltering outpu...