Computer Science - Computer Fundamentals - Discussion

Thanks for explaining @baloch.

Explain it briefly.

Pulse code modulation : It is a pulse modulation technique in which the amplitude of an analog signal is converted to a binary value represented as a series of pulses.

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. In a PCM stream, the amplitude of the analog signal is sampled regularly at uniform intervals, and each sample is quantized to the nearest value within a range of digital steps.

Linear pulse-code modulation (LPCM) is a specific type of PCM where the quantization levels are linearly uniform. This is in contrast to PCM encodings where quantization levels vary as a function of amplitude (as with the A-law algorithm or the μ-law algorithm). Though PCM is a more general term, it is often used to describe data encoded as LPCM.

What is pulse code modulation?

Analog signal is also convert to digital form by sampling and quantization.

Analog signal is a types of signal as eg sine graph and pulse code modulation by sampling process.