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Unformatted text preview: below for sampling and reconstruction. If the sampling rate is such that σ π 4 3 = T , which will be a better reconstruction of ) ( t f ) ( 1 t f or ) ( 2 t f ? Note that in the upper scheme we just sample ) ( t f directly, and in the lower scheme we first filter out all frequencies above T / . ) ( ω R H T T − 1 ) ( t f ) ( nT f Impulse generator ) ( R H ∑ ∞ −∞ = − = n s nT t nT f T t f ) ( ) ( ) ( δ ) ( ˆ 1 t f Sample T ) ( t f ) ( nT f c Impulse generator ) ( R H ∑ ∞ −∞ = − = n c cs nT t nT f T t f ) ( ) ( ) ( ) ( ˆ 2 t f Sample T ) ( t f c ) ( R H...
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 Spring '12
 ProfCampssi
 Digital Signal Processing, Signal Processing, sampling rate, Nyquist–Shannon sampling theorem, Nyquist rate

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