Benutzer:Liebeskind/G.-Standard-Codecs
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Die G.-Standard-Codecs sind eine Serie von Audiocodecs, die von der ITU standardisiert wurden.
IPv4 Overhead
[Bearbeiten | Quelltext bearbeiten]20 ms pro Paket
| Codec | Framelänge | Samples | Bytes | Unteres Subband 50 Hz bis 4 kHz |
Oberes Subband 4 bis 7 kHz |
Abtastrate | Quantisierung | kbit/s Netto |
RTP+IPv4 | Verwendung | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ms | pro Frame | pro Frame | Technik | Bits/ Sample |
kbit/s | Technik | Bits/ Sample |
kbit/s | Bit | kbit/s | ms | ||||
| G.711 | 10 | 80 | PCM | 8 | 64 | — | — | — | 8 kHz | 64 | 80 | 20 | |||
| G.722-64 | 10 | 80 | ADPCM | 6 | 48 | ADPCM | 2 | 16 | 16 kHz | 14 | 64 | 80 | 20 | HD-DECT-Funk | |
| G.722-56 | 10 | 70 | ADPCM | 5 | 40 | ADPCM | 2 | 16 | 16 kHz | 14 | 56 | 72 | 20 | ||
| G.722-48 | 10 | 60 | ADPCM | 4 | 32 | ADPCM | 2 | 16 | 16 kHz | 14 | 48 | 64 | 20 | ||
| G.726-40 | 10 | 50 | ADPCM | 5 | 40 | — | — | — | 8 kHz | 40 | 56 | 20 | |||
| G.726-32 | 10 | 40 | ADPCM | 4 | 32 | — | — | — | 8 kHz | 32 | 48 | 20 | SD-DECT-Funk | ||
| G.726-24 | 10 | 30 | ADPCM | 3 | 24 | — | — | — | 8 kHz | 24 | 40 | 20 | |||
| G.726-16 | 10 | 20 | ADPCM | 2 | 16 | — | — | — | 8 kHz | 16 | 32 | 20 | |||
| G.729 | 10 | 10 | CS-ACELP | 8 | — | — | — | 8 kHz | 8 | 24 | 20 | ||||
| G.729.1 | 10 | 10 | CS-ACELP | 8 | TDBWE | 16 kHz | 8-32 | 20 | |||||||
| TDAC | |||||||||||||||
| G.723.1-6.3 | 30 | 240 | 24 | MPC-MLQ | 6,3 | — | — | — | 8 kHz | 16 | 6,3 | 17,0666 | 30 | ||
| G.723.1-5.3 | 30 | 240 | 20 | ACELP | 5,3 | — | — | — | 8 kHz | 16 | 5,3 | 16 | 30 | ||