CONVERSION
The Pulse Code Modulation (PCM) Technique
By Dr. Ernest Simo
1.0 Nyquist Sampling
The Sampling Process
Consider a typical speech signal s(t). In the Time-domain, it looks very non-deterministic and almost random.
In the Frequency-domain, it is a band-limited signal with most of its energy concentrated between 0 and 4 KHz.
ANALOG-TO-DIGITAL CONVERSION
The Pulse Code Modulation (PCM) Technique
© 1999 DR. ERNEST SIMO - SPACE2000