Compression Algorithms

Perceptual music shaping

For audio (.mp3 & .mp4)
Lossy

• Removes frequencies outside human hearing range
• If two sounds are played at once, remove softer sound

JPEG compression

For bitmap images (.jpeg)
Lossy

• Quality reduced

SVG compression

For vector graphics (.svg)

• SVG files are defined as XML
• XML can be compressed

Run Length Encoding (RLE)

For anything
Lossless

• Stores frequency of occurence & value
• Effective only when there are repeated patterns