bravoegg
Member level 2
say there's a continuous signal A(t), now we sample it with a series of impulse signal, then we get A = A(n*Ts)* delta(t - nTs).
If we look at the spectra, the fourier transform of A(t) is a bandlimited waveform. the FT( Not discrete Fourier transform) of A is a infinite replica of A(t)'s spectrum.
does this mean now the sampled version A is with infinite power? by looking at time domain of A it's absurd. But in the frequency domain there're infinite replica.
Where did I get wrong? please help...thanks.
If we look at the spectra, the fourier transform of A(t) is a bandlimited waveform. the FT( Not discrete Fourier transform) of A is a infinite replica of A(t)'s spectrum.
does this mean now the sampled version A is with infinite power? by looking at time domain of A it's absurd. But in the frequency domain there're infinite replica.
Where did I get wrong? please help...thanks.