Is PCM a type of modulation?

Pulse-code modulation (PCM) is a method used to digitally represent sampled analog signals. It is the standard form of digital audio in computers, compact discs, digital telephony and other digital audio applications.

What does modulation technique mean?

Modulation is the process of converting data into electrical signals optimized for transmission. Modulation techniques are roughly divided into four types: Analog modulation, Digital modulation, Pulse modulation , and Spread spectrum method. Digital modulation involves transmission of binary signals (0 and 1).

What is modulation and why it is called so?

Why use modulation The carrier wave used by radio frequency (RF) transmissions doesn’t carry much information itself. To include speech or data, another wave has to be superimposed on the carrier wave, thus changing the shape of the carrier wave. The process of doing so is called modulation.

Where is modulation in PCM?

Basic Elements of PCM. The transmitter section of a Pulse Code Modulator circuit consists of Sampling, Quantizing and Encoding, which are performed in the analog-to-digital converter section.

Why modulation is used in communication system?

The communication system uses modulation to enhance the range of the signals. Most of the signals generated in daily life are sinusoidal waveforms. Modulation is the superimposition of the signal wave (carrying the message) with a high-frequency carrier signal to ensure faster transmission of the signal.

What is modulation in communication?

Modulation is the process of encoding information from a message source in a way that is suitable for transmission. By superimposing a message on to a high frequency signal known as a carrier wave (or sinusoidal signal), video, voice and other data can be transmitted.

What is PCM process explain its transmitter and receiver part?

The transmitter section of a Pulse Code Modulator circuit consists of Sampling, Quantizing and Encoding, which are performed in the analog-to-digital converter section. The basic operations in the receiver section are regeneration of impaired signals, decoding, and reconstruction of the quantized pulse train.

What is PCM explain steps involved in PCM?

Definition: A technique by which analog signal gets converted into digital form in order to have signal transmission through a digital network is known as Pulse Code Modulation. The major steps involved in PCM is sampling, quantizing and encoding which will be discussed in detail in the upcoming sections.