Re: Quantization
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.
bye
Bhanumurthy.