![]() The sampling method selects few points on the analog signal and are joined to round off the values to a stabilized value. The digitization of analog signals is done by rounding off the values that are close to the analog values. Pulse width modulation (PWM) is an analog control method, which modulates the bias of transistor base or MOS gate according to the change of load to realize the change of on-time of transistor or MOS, and thus to change the output of switching stabilized power supply. Quantization replaces each real number with an approximation from a finite set of discrete values. ![]() Sampling converts a time-varying voltage signal into a discrete-time signal, a sequence of real numbers. It is the standard form of digital audio in computers, compact discs, digital telephony and other digital audio applications.Īlso question is, what is quantization and sampling?Īn analog-to-digital converter (ADC) can be modeled as two processes: sampling and quantization. The sampled analog data is changed to, and then represented by, binary data.Īlso, what is the use of pulse code modulation? Pulse- code modulation ( PCM) is a method used to digitally represent sampled analog signals. Accordingly, what is mean by pulse code modulation?ĭefinition - What does Pulse Code Modulation (PCM) mean? Pulse code modulation (PCM) is a digital representation of an analog signal that takes samples of the amplitude of the analog signal at regular intervals.
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