Howtosignalprocessing
Pulse code modulation (PCM) is a form of digital-to-analog conversion in which the information contained in the samples of an analog signal can be represented or shown in the form of digital words in a serial bit stream of words.
- What does PCM refer to?
- What is PCM and where it is used?
- What type of device is PCM?
- What are the 3 processes of a PCM?
- Which of the following is correct about PCM?
- What are the two types of PCM?
What does PCM refer to?
Pulse-Code Modulation (PCM) and the Dolby Digital® technology refer to different types of digital audio recordings. PCM is the conventional method for converting analog audio into digital audio. The PCM audio recorded on DVD is a two-channel digital, stereo audio track.
What is PCM and where it is used?
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 type of device is PCM?
PCM devices are responsible for converting digital sound sequences to analog waveforms, or analog waveforms to digital sound sequences. Each device operates only in one mode or the other. If it converts digital to analog, it's a playback channel device; if it converts analog to digital, it's a capture channel device.
What are the 3 processes of a PCM?
PCM consists of three steps which are sampling, quantization and coding. As seen in the above image an input analog signal which is in the form of a sine wave is converted into a digital signal with discrete values.
Which of the following is correct about PCM?
PCM stands for Pulse Code Modulation. With PCM, the amplitude of the analog signal is sampled at regular intervals and translated into a binary number. The difference between the original signal and the translated digital signal is called quantizing error.
What are the two types of PCM?
PCM Types Include Paraffin Waxes, Non-Paraffin Organics, Hydrated Salts, and Metallics. Med. Paraffins are most common PCM for electronics thermal management.
