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

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. It is abbreviated as PCM. It is basically signal coders also known as waveform coders.

Of them all, the digital modulation technique used is Pulse Code Modulation (PCM). A signal is pulse code modulated to convert its analog information into a binary sequence, i.e., 1s and 0s. The output of a PCM will resemble a binary sequence.

When a digital signal undergoes Pulse Code Modulation, it converts the analog information into a binary sequence (1 and 0). Through the demodulation process, we can obtain the original analog signal. The figure below represents the output of the PCM signal with respect to the sine wave.

Jul 12, 2018 · Pulse code modulation (PCM) and demodulation circuit diagrams are essential components of any digital system or device. Propagated in the form of electrical pulses, PCM is a method of encoding analog data into a digital representation.

Sep 12, 2017 · In PCM modulation, a signal is converted from analog form to digital form through the process of sampling and encoding. This means the analog signal is sampled at a series of regular intervals and then encoded using digital codes. The encoded signal is then transmitted as a series of pulses.

Apr 15, 2016 · In Pulse Code Modulation, the message signal is represented by a sequence of coded pulses. This message signal is achieved by representing the signal in discrete form in both time and amplitude.

Pulse Code Modulation (PCM): Pulse Code Modulation (PCM) is different from the other forms of pulse modulation studied so far, PCM also uses sampling techniques, but it differs from the others in that it is a digital process.

Oct 5, 2024 · What is Pulse Code Modulation (PCM)? PCM is a method of digitising analog signals by sampling the signal’s amplitude at regular intervals and then encoding these samples into binary numbers.

Jan 10, 2025 · The pulse code modulator technique samples the input signalx (t) at a sampling frequency. This sampled variable amplitude pulse is then digitalized by the analog to digital converter. Figure.shows the PCM generator. The signal is first passed through sampler which is sampled at a rate of (fs) where: