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when u get sampling result, what will u do to it?... Answer is u will quantise it.. so if u are using suppose 3 bit quantaization, u will try to give a 3 bit (0 to 7) code to each sample. then using these 3 bit codes, u can make ur original signal too.
got it?
Hi,
To convert an analog signal to digital signal, three steps have to be followed.
1.Sampling
2.Quantizing
3.Encoding
Sampling converts a continuous time signal to Discrete time signal. However,after sampling, the signal amplitudes will be still continuous. Hence to convert continuous amplitude signal to discrete amplitude signal, Quantization has to be performed wherein the signal amplitudes are rounded off to a nearest value to obtain discrete amplitudes.
Ofcourse,after encoding the discrete amplitudes, a complete digital signal is obtained.
Refer to "Principles of communications" by Taub and Schilling for excellent illustrations.
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