Sound and video coding

Содержание и основные понятия

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Alterna · Chapter 21
Sound and video coding
Acoustic theory, volume (5.1/7), video codecs, VGA/DVI/HDMI/DP interfaces.
Chapter 21 takes a deeper look at
sound and video coding
Acoustic theory, spatial audioformats, video compression techniques, video interfaces.
in Chapter 9.4
.
GEF · 9-11 grade
PIF · Baseline
OGE No. 7.9
EEG No. 7.9
21
Chapter Pages
Four pages with theory, interactors, and a bank of assignments.
21.1
Digital sound
Acoustics, PCM, volume sound, code.
21.2
Video
Coding, compression, VGA/DVI/HDMI/DP interfaces
21.3
Workshop
OGE/EGE trainer, tasks, reviews
21.4
Polygon examination
Quest, test, open task
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Links to previous chapters
This chapter is based on basic knowledge from previous modules. Of course, it can be studied separately, but related topics will help to understand the material.
Chapter 9 — Discretion
The audio-volume formula
V = R×t×i×K/8
, the Nyquist frequency, the Quantum-- all of this was discussed in detail in
Chapter 9.4
Here we expand the formula for multi-channel sound and video.
Chapter 20 — Image coding
Color models (RGB, YCbCr, CMYK), resolution, color depth - concepts
Chapter 20
The video is a sequence of images and the color space YCbCr is used in all video codes.
Chapter 22 — Peripheria
Monitors, columns, headphones, microphones, video cameras — input/output devices described in
Chapter 22
, directly related to sound coding and video. Which interface should be selected to connect the 4K monitor?
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What we will learn in this chapter
♪ Digital sound
Sound physics, PCM coding, Nikvist theorem, multi-channel sound (from mono to Dolby Atmos 7.1.4), WAV/FLAC/MP3/AAC/DSD formats, audio interfaces, MP3 psychoacoustic model, audio mixer.
♪ Video Coding
Resolution (SD>8K), frequency of personnel, progressive/castress-wrapping, I/P/B-frames, GOP, codes H.264/H.265/VP9/AV1, VGA/HDMI/DisplayPort, HDR.