Howtosignalprocessing
The word pulse in the term pulse-code modulation refers to the pulses to be found in the transmission line.
- What is Pulse Code Modulation in simple words?
- Why is Pulse Code Modulation called modulation?
- What are the 5 elements in Pulse Code Modulation under transmitter section?
- What is the principle of pulse modulation?
What is Pulse Code Modulation in simple words?
Pulse code modulation (PCM) [13] is a digital scheme for transmitting analog data. It converts an analog signal into digital form. Using PCM, it is possible to digitize all forms of analog data, including full-motion video, voice, music, telemetry, etc.
Why is Pulse Code Modulation called modulation?
When a digital signal goes through PCM, the information is converted from analog form to binary form 0 , 1 . Hence, this process is a modulation technique, specifically digital modulation.
What are the 5 elements in Pulse Code Modulation under transmitter section?
The components of a PCM system are a low pass filter, sampler, quantizer, encoder, communication channel, quantizer, decoder, and a reconstruction filter. The input message signal m(t) is the analog signal applied to the sampler.
What is the principle of pulse modulation?
In a PCM system, the primary signal function with its subtle amplitude variations is transformed into a secondary signal. This signal is merely a sequence of on-off pulses, or marks and spaces where the pulse amplitude, the pulse width, or the pulse position does not vary.
