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| some ADC-specific: | | some ADC-specific: |
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| SINAD: Signal-to-Noise And Distortion; the combination of SNR and THD | | SINAD: Signal-to-Noise And Distortion; the combination of SNR and THD |
| 20 * log ([Fundamental] / SQRT (SUM (SQR([Noise + Harmonics])))) | | 20 * log ([Fundamental] / SQRT (SUM (SQR([Noise + Harmonics])))) |
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| ENOB: Effective Number Of Bits | | ENOB: Effective Number Of Bits |
| (SINAD – 1.76) / 6.02 | | (SINAD – 1.76) / 6.02 |
Revision as of 12:52, 9 April 2024
The physical and human spects dealing with audio, video, and images
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
Video: format notes · encoding notes · On display speed · Screen tearing and vsync
Audio physics and physiology: Sound physics and some human psychoacoustics · Descriptions used for sound and music
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
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 · studio and stage notes ·
Effects ·
sync
Electronic music:
- Electronic music - musical terms
- MIDI · Some history, ways of making noises · Gaming synth · microcontroller synth
- Modular synth (eurorack, mostly):
- sync · power supply · formats (physical, interconnects)
- DAW: Ableton notes · MuLab notes · Mainstage notes
Unsorted: Visuals DIY · Signal analysis, modeling, processing (some audio, some more generic) · Music fingerprinting and identification
For more, see Category:Audio, video, images
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Speech analysis and processing
Source-filter model
Vocoders
Voice coders analyses speech into parameeters, then synthesizes based on those parameters.
They were once made with the idea to parametrize speech for efficient transmission.
It was an important development in telecom, and also used in phonetics.
It was also potentially an instrument of sorts.
A voder is the production part only, and sometimes is even a playable machine[1].
These days vocoders are mostly used to distort vocals and instruments in music.
See also:
Linear predictive coding (LPC) for speech; and PSOLA
STRAIGHT
Semi-sorted
Performance metrics
THD and THD+N
SINAD
Other metrics
Unsorted