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- G.728 abstract "G.728 is an ITU-T standard for speech coding operating at 16 kbit/s. It is officially described as Coding of speech at 16 kbit/s using low-delay code excited linear prediction.Technology used is LD-CELP, low-delay code excited linear prediction. Delay of the codec is only 5 samples (0.625 ms). The linear prediction is calculated backwards with a 50th order linear predictive coding filter. The excitation is generated with gain scaled VQ. The standard was finished in 1992 in the form of algorithm exact floating point code. In 1994 a bit exact fixed point codec was released. G.728 passes low bit rate modem signals up to 2400 bit/s. Also network signaling goes through. The complexity of the codec is 30 MIPS. 2 kilobytes of RAM is needed for codebooks. Mean opinion score for G.728 is 3.61.The essence of CELP techniques, which is an analysis-by-synthesis approach to codebook search, is retained in LD-CELP. The LD-CELP however, uses backward adaptation of predictors and gain to achieve an algorithmic delay of 0.625 ms.RealAudio 28.8 is a reduced-bitrate variant of this standard, using 15.2 kbit/s.".
- G.728 wikiPageExternalLink recommendation.asp?type=folders&lang=e&parent=T-REC-G.728.
- G.728 wikiPageID "1079611".
- G.728 wikiPageLength "1918".
- G.728 wikiPageOutDegree "23".
- G.728 wikiPageRevisionID "615787460".
- G.728 wikiPageWikiLink Bit.
- G.728 wikiPageWikiLink Bit_exact.
- G.728 wikiPageWikiLink CELP.
- G.728 wikiPageWikiLink Category:Audio_codecs.
- G.728 wikiPageWikiLink Category:ITU-T_recommendations.
- G.728 wikiPageWikiLink Category:Speech_codecs.
- G.728 wikiPageWikiLink Code-excited_linear_prediction.
- G.728 wikiPageWikiLink Codec.
- G.728 wikiPageWikiLink Comparison_of_audio_coding_formats.
- G.728 wikiPageWikiLink Computer_network.
- G.728 wikiPageWikiLink Fixed-point_arithmetic.
- G.728 wikiPageWikiLink ITU-T.
- G.728 wikiPageWikiLink Instructions_per_second.
- G.728 wikiPageWikiLink International_standard.
- G.728 wikiPageWikiLink Kilobit.
- G.728 wikiPageWikiLink Kilobyte.
- G.728 wikiPageWikiLink Linear_predictive_coding.
- G.728 wikiPageWikiLink List_of_codecs.
- G.728 wikiPageWikiLink Mean_opinion_score.
- G.728 wikiPageWikiLink Modem.
- G.728 wikiPageWikiLink Random-access_memory.
- G.728 wikiPageWikiLink Random_access_memory.
- G.728 wikiPageWikiLink RealAudio.
- G.728 wikiPageWikiLink Speech.
- G.728 wikiPageWikiLink Speech_communication.
- G.728 wikiPageWikiLink Vector_quantization.
- G.728 wikiPageWikiLinkText "G.728".
- G.728 hasPhotoCollection G.728.
- G.728 wikiPageUsesTemplate Template:Compression_formats.
- G.728 subject Category:Audio_codecs.
- G.728 subject Category:ITU-T_recommendations.
- G.728 subject Category:Speech_codecs.
- G.728 hypernym ITU-T.
- G.728 comment "G.728 is an ITU-T standard for speech coding operating at 16 kbit/s. It is officially described as Coding of speech at 16 kbit/s using low-delay code excited linear prediction.Technology used is LD-CELP, low-delay code excited linear prediction. Delay of the codec is only 5 samples (0.625 ms). The linear prediction is calculated backwards with a 50th order linear predictive coding filter. The excitation is generated with gain scaled VQ.".
- G.728 label "G.728".
- G.728 sameAs G.728.
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- G.728 sameAs m.0446fb.
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- G.728 sameAs Q177858.
- G.728 sameAs Q177858.
- G.728 sameAs G.728.
- G.728 wasDerivedFrom G.728?oldid=615787460.
- G.728 isPrimaryTopicOf G.728.