Digitalisation of signals
I.
The step order for the analogue to digital conversion is:
Quantization/sampling/compression/coding
Sampling/quantization/compression/coding
Sampling/compression/quantization/coding
II.
On a theoretical point of view, sampling a signal s(t) is equivalent to multiply it by:
the signal s(t) itself
a Dirac impulse
a Dirac "comb"
III.
Let Fe be the sampling frequency and Fmax the maximum frequency contained in the signal. Which is the sampling condition (Shannon-Nyquist)?
Fe = 2*Fmax
Fe >= 2*Fmax
Fe <= 2*Fmax
IV.
Multiplying two signals s(t) and f(t) in the temporal domain is equivalent to which operation in the frequency domain?
Making a convolution between s(w) and f(w)
Adding s(w) and f(w)
Substracting s(w) from f(w)
V.
The operation which ensures the transformation from real values to normalised sample amplitudes is called:
Coding
Quantization
Compression
Answers
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