Compresasion Audio/Video Algoritma

Audio Compresasion Algoritma

• G.711 Telephone quality

– 3 KHz requiring 64kbs of BW

• G.728 Telephone quality

– Compressed 3KHz requiring 16Kb/s

• G.722 True voice quality

– Wide band 7 KHz requiring 48(US)/56Kbs

• G.722.1 True voice Compressed

– Compressed wide band 7 KHz requiring 24 or 32Kbs

• AAC-LD True CD quality in Stereo !!

– 20KHz requiring 64/128Kbps

Video Compresasion Algoritma

• H.261 Compression algorithms for video codec for audiovisual services (old..)
• H.263 - Newer & Optimised for lower BWs
• H.264 – Newest. Similar visual quality at half the bandwidth compared to H263: 768 quality at 384