Vision and color perception: objectively describing color · the eyes and the brain · physics, numbers, and (non)linearity · color spaces · references, links, and unsorted stuff
Image: file formats · noise reduction · halftoning, dithering · illuminant correction · Image descriptors · Reverse image search · image feature and contour detection · OCR · Image - unsorted
Displays: · On display speed · Screen tearing and vsync · Arguments for 60fps / 60Hz in gaming · Video display notes ·· Before framebuffers · Simpler display types · Display DIY
Video: file format notes · video encoding notes ·
Audio physics and physiology: Sound physics and some human psychoacoustics · Descriptions used for sound and music · Sound level meter notes
Digital sound and processing: capture, storage, reproduction · on APIs (and latency) · programming and codecs · some glossary · Audio and signal processing - unsorted stuff
Music electronics: device voltage and impedance, audio and otherwise · amps and speakers · basic audio hacks · Simple ADCs and DACs · digital audio · multichannel and surround On the stage side: microphones · audio levels & technical gritty · devices you'll use · cables, connectors, adapters · Effects · sync
Noise stuff: Stray signals and noise · sound-related noise names · electronic non-coupled noise names · electronic coupled noise · ground loop · strategies to avoid coupled noise · Sampling, reproduction, and transmission distortions · (tape) noise reduction
Electronic music:
Unsorted: Visuals DIY · Signal analysis, modeling, processing (some audio, some more generic) · Music fingerprinting and identification
For more, see Category:Audio, video, images