Ekukhulumisaneni ngezwi nevidiyo, ikhwalithi ivame ukuchaza ukuthi ulwazi luyinto enhle noma embi. Ngaphandle kwencazelo yekhwalithi esiyizwayo, njengokuthi 'kuhle kakhulu' noma 'kubi kakhulu,' kunendlela yokubala yokuveza ikhwalithi yezwi nevidiyo. Ibizwa ngokuthi i-Mean Opinion Score (MOS). I-MOS inikeza isibonakaliso sezinombolo zekhwalithi ebonakalayo yezindaba ezitholwa ngemuva kokudluliselwa futhi ekugcineni zicindezelwe ngokusebenzisa i-codec .
I-MOS iboniswa ngenombolo eyodwa, kusuka ku-1 kuya kweyesi-5, i-1 ibe yimbi kakhulu futhi engu-5 engcono kakhulu. I-MOS isephansi kakhulu, njengoba imidwebo esekelwe kulokho okubonwa ngabantu ngesikhathi sokuhlolwa. Noma kunjalo, kunezinhlelo zokusebenza ze- software ezilinganisa i-MOS kumanethiwekhi, njengoba sibona ngezansi.
I-Opinion Score Score Amanani
Kuthathwa ngezinombolo eziphelele, izinombolo zilula kakhulu ebangeni.
- 5 - Ephelele. Njengengxoxo ebuso ubuso nobuso noma ukwamukela umsakazo.
- 4 - Fair. Ukungapheleli kungabonakala, kodwa umsindo usacacile. Lokhu (okushoyo) ububanzi bamakhalekhukhwini.
- 3 - Ukucasula.
- 2 - Okudabukisayo kakhulu. Cishe akunakwenzeka ukuxhumana.
- 1 - Akunakwenzeka ukuxhumana
Amagugu akudingeki abe nezinombolo eziphelele. Imingcele ethile nemikhawulo ivame ukuboniswa ngamagugu asedesimali kusuka kulolu bubanzi be-MOS. Isibonelo, inani le-4.0 kuya ku-4.5 libhekwa njengezinga eliphezulu futhi lidala ukwaneliseka okuphelele. Lokhu kuyinzuzo evamile ye- PSTN nezinsizakalo eziningi ze-VoIP ezihlose kuyo, ngokuvamile ngokuphumelela. Amanani awela ngaphansi kwe-3.5 athiwa ayamukeleki ngabasebenzisi abaningi.
Ukuhlolwa kwe-MOS kwenziwa kanjani?
Inani elithile labantu lihlezi futhi lenziwe ukuze lizwe umsindo. Ngamunye wabo unikeza isilinganiso kusukela ku-1 kuya ku-5. Khona-ke isibalo samasayithethi sisho (isilinganiso) sibalwa, sinikeze Amaphuzu Wezincazelo Eziphakathi. Lapho uqhuba ukuhlolwa kwe-MOS, kunezinkulumo ezithile ezinconywa ukuba zisetshenziswe yi-ITU-T. Kunjalo:
- Kuzodingeka ukuthi uthule kakhulu.
- Kwakungekho lutho okumele lubonwe.
- Babekhulekela izithombe zokhuni.
- Ngifuna umzuzu ngomhloli.
- Ingabe wayedinga imali?
Amaphuzu Okuthinta Amaphuzu Aphakathi Kwamazwi
I-MOS ingavele isetshenziselwe ukuqhathanisa phakathi kwezinsizakalo zeVoIP nabahlinzeki. Kodwa okubaluleke kakhulu, zisetshenziselwa ukuhlola umsebenzi wama- codec , okucindezela umsindo nevidiyo ukulondoloza ekusebenziseni komkhawulokudonsa kodwa ngezinga elithile lokudonsa ikhwalithi. Ukuhlolwa kwe-MOS kwenzelwa ama-codec endaweni ethile.
Kunezinye izici ezithile ezithinta ikhwalithi yomsindo nevidiyo edlulisiwe, njengoba kukhulunywe kuleso sihloko . Lezi zici akufanele zibhekiswe kumanani we-MOS, ngakho-ke uma unquma i-MOS ethile ye-codec ethile, isevisi noma inethiwekhi, kubalulekile ukuthi zonke ezinye izici zithande ukuphakama kwekhwalithi enhle, ngoba izindinganiso ze-MOS zicatshangwa ukuze itholakale ngaphansi kwezimo ezihle.
Isofthiwe Yomqondo Otholwe Ngama Score Isilinganiselwa
Njengoba izivivinyo ze-MOS / zabantu zitholakala ngokweqile futhi zingaphansi kokukhiqiza ngezindlela eziningi, kukhona namanje amathuluzi e-software awenza ukuhlolwa kwe-MOS okuzenzakalelayo ekuthunyelwe kwe-VoIP. Nakuba bengenalo ukuthintwa komuntu, into enhle ngalezi zivivinyo ukuthi ziyabheka zonke izimo zokuxhomeka kwenethiwekhi ezingathinta ikhwalithi yezwi . Ezinye izibonelo yi-AppareNet Voice, i-Brix VoIP Measurement Suite, i-NetAlly, i-PsyVoIP ne-VQmon / EP.