Temat: Poszukuję materiałów na temat kodeków stosowanych w VoIP
zebrane linki do pozycji:
znajdziesz pod tym linkiem:
http://www.voip-info.org/wiki/view/Codecs
•AMR Codec
•BroadVoice Codec 16Kbps narrowband, and 32Kbps wideband
•GIPS Family - 13.3 Kbps and up
•GSM - 13 Kbps (full rate), 20ms frame size
•iLBC - 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size
•ITU G.711 - 64 Kbps, sample-based Also known as alaw/ulaw
•ITU G.722 - 48/56/64 Kbps ADPCM 7Khz audio bandwidth
•ITU G.722.1 - 24/32 Kbps 7Khz audio bandwidth (based on Polycom's SIREN codec)
•ITU G.722.1C - 32 Kbps, a Polycom extension, 14Khz audio bandwidth
•ITU G.722.2 - 6.6Kbps to 23.85Kbps. Also known as AMR-WB. CELP 7Khz audio bandwidth
•ITU G.723.1 - 5.3/6.3 Kbps, 30ms frame size
•ITU G.726 - 16/24/32/40 Kbps
•ITU G.728 - 16 Kbps
•ITU G.729 - 8 Kbps, 10ms frame size
•Speex - 2.15 to 44.2 Kbps
•LPC10 - 2.5 Kbps
•DoD CELP - 4.8 Kbps
Some tables comparing different codecs:
•Cisco.com: Voice Over IP - Per Call Bandwidth Consumption
•
http://www.cs.columbia.edu/~hgs/audio/codecs.html
•
http://www.speex.org/comparison/
•
http://www.terracall.com/FAQs_white_1.aspx
•
http://www.signalogic.com/index.pl?page=codec_samples
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http://ozvoip.com/codecs.php Page containing codec information and codec comparison
Tables showing which VoIP clients support which codecs
•
http://compare.ozvoip.com/codecsupport.php (please email corrections and additions to webmaster at ozvoip dot com)
Audio Examples of different Codecs
•HawkSoft Codec Samples
•VoiceAge: ACELP, G723, G.729, AMR samples
A Portal for all types of Software codecs (Audio, Video, Image & Speech)
•
http://www.ipsupermarket.com
poszperaj - jest tam troche porównań
Paweł Gawłowski edytował(a) ten post dnia 18.11.09 o godzinie 23:06