PCM

DO YOU KNOW WHAT IS PCM?

Pulse-code modulation ( PCM ) is a digital representation of an analog signal where the magnitude of the signal is sampled regularly at uniform intervals, then quantized to a series of symbols in a digital (usually binary ) code.

APPLICATION PCM

PCM has been used in digital telephone systems and is also the standard form for digital audio in computers and the compact disc red book format. It is also standard in digital video , for example, using ITU-R BT.601 . However, straight PCM is not typically used for video in consumer applications such as DVD or DVR because it requires too high a bit rate (PCM audio is supported by the DVD standard but rarely used). Instead, compressed variants of PCM are normally employed. Very frequently, PCM encoding facilitates digital transmission from one point to another (within a given system, or geographically) in serial form.

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PCM

ADAKAH ANDA TAHU APA ITU PCM

Singkatan daripada 'Pulse Code Modulation'. Merupakan kaedah yang sering digunakan bagi menyimpan dan juga memidahkan audio digital yang tidak dimampatkan. Ini membolehkan ianya boleh dibaca oleh kebanyakan aplikasi audio.


APLIKASI PCM

Format PCM sering digunakan dalam aplikasi audio yang utama seperti CD-Audio dan juga pita audio digital (DAT). Di samping itu, ianya sering digunakan bagi menyimpan audio dlaam format yang utama seperti WAV dan AIFF.

ILLUSTRATION



Television encoding systems by nation