Mumbai University > Computer Engineering > Sem 3 > Electronic Circuits and Communication Fundamentals

Marks: 5 Marks

Year: Dec 2015

1) The basis for PCM begins with the sampling theorem, which states that a band-limited signal can be represented by samples taken at a rate f_s that is at least twice the highest frequency f_m in the message signal.

2) An illustration of the sampling theorem is shown in figure below.

3) The significance of sampling theorem is wideband frequency extention over standard telephone narrowband and it used in most modern VoIP and VVoIP communication products.

4) The standard frequency for speech signal in sampling theorem is 8,000 Hz.