Abasebenzisi abaningi ngokwengeziwe sebeqalile ukusebenzisa isiginali yedijithaliuthelefoni, kepha kwezinye izindawo ezingenhla kwezindawo ze-analog zinallinal zisetshenziswa kakhulu. Abasebenzisi abaningi badidanisa amasiginali we-analog ngezimpawu zedijithali. Manje yini ifoni ye-analog? Luyini ucingo lwesiginali yedijithali?
Ucingo lwe-Analog - Ucingo oludlulisa umsindo ngezimpawu ze-analog. Isiginali ye-analog kagesi ikakhulukazi isho ukuthi amplitude futhi sihambisane nesibonakaliso sikagesi esiqhubekayo, lesi siginali singaba umjikelezo we-analog ngemisebenzi ehlukahlukene, ukukhuphuka, engeza, ukuphindaphinda nokunye. Izimpawu ze-Analog zikhona yonke indawo emvelweni, njengokushintsha kokushisa kwansuku zonke.
Isiginali yedijithali isibonakaliso sedijithali sesiginali yesikhathi (emelelwa ngokulandelana kuka-1 no-0), okuvame ukutholakala esignalini se-analog.
Izinzuzo nokubi kwezimpawu zedijithali:
1, hlala ibhendi ebanzi yemvamisa. Ngoba umugqa udlulisa isiginali yokushayela, ukuhanjiswa kwedijithaliImininingwane yezwiIdinga ukulandisa nge-20K-64Khz Bandwidth, futhi indlela yezwi ye-analog ihlala kuphela i-4Khz bandwidth, okungukuthi, ama-akhawunti wesiginali e-PCM wezindlela eziningi zezwi le-analog. Esiteshini esithile, izinga lokusetshenziswa kwalo lincishisiwe, noma izidingo zalo zomugqa ziyanda.
2, izidingo zobuchwepheshe ziyinkimbinkimbi, ikakhulukazi ubuchwepheshe bokuvumelanisa budinga ukunemba okuphezulu. Ukuqonda kahle incazelo yalowo mthumeli, owemukelayo kufanele ahlukanise kahle i-Code Element, futhi athole ukuqala kweqembu ngalinye lolwazi, okudinga ukuthi likuqaphele ukuvumelanisa, uma ukwakheka kwenethiwekhi yedijithali, inkinga yokuvumelanisa kuzoba nzima kakhulu ukuyixazulula.
3, ukuguqulwa kwe-analog / idijithali kuzoletha iphutha lamanani. Ngokusetshenziswa kwamasekethe amakhulu ahlanganisiwe kanye nokuthandwa kwemithombo yemithombo yokuhambisa ebanzi efana ne-Optical Fiber, izibonakaliso eziningi zedijithali zisetshenziselwa ukugcinwa kolwazi nokudluliselwa, ngakho-ke amaphutha we-analog kumele aguqulwe aguquke.
Isikhathi sePosi: Feb-05-2024
