Kwezobuchwephesha, ukudityaniswa kobuchwepheshe obuphambili kunye noyilo olusebenzayo lubalulekile.Abaxhasi ababini ababalulekileyo kule ndawo yi-pulse code modulation (PCM) kunye neebhodi zeesekethe eziprintiweyo (PCB).I-PCM kunye ne-PCB zisetyenziswa ngokubanzi kwizixhobo zombane ezahlukeneyo, kwaye nganye ineengenelo zayo kunye neempawu zayo.Kule bhlog, siza kucalula iyantlukwano kunye nesakhono seePCM kunye neePCBs ukubona ukuba loluphi ukhetho olungcono kwiimfuno zakho.
I-PCM (Uhlengahlengiso lweKhowudi yePulse):
I-Pulse Code Modulation yindlela yedijithali yokumela iimpawu ze-analog.Iguqula imiqondiso ye-analog kwifomu yedijithali kwaye isetyenziswa ikakhulu kwizicelo zomsindo ezifana nokurekhoda kunye nokuveliswa komculo.I-PCM ngamaxesha athile ithatha i-amplitude yesampulu nganye yesiginali ye-analog kwaye imele idijithali.Ubuchwephesha besampulu buvelisa ngokuchanekileyo umqondiso we-analog.I-PCM ibonelela ngesandi esicacileyo esigqwesileyo kwaye yaziwa ngokuthembeka kwayo okuphezulu, iyenza ilungele ukuyila iinkqubo zomsindo kunye nezixhobo ezifuna umgangatho wesandi ongaguqukiyo.
I-PCB (iBhodi yeSekethe eShicileleyo):
Iibhodi zeesekethe eziprintiweyo zisisiseko somzimba wezixhobo zombane, ezibonelela ngeqonga lokudityaniswa kwamacandelo ahlukeneyo.I-PCB ineendlela zokuqhuba ezifakwe kwi-non-conductive substrate ukubonelela uqhagamshelo lombane kunye nenkxaso yomatshini kumacandelo.I-PCBs iququzelela ilungiselelo kunye noqhagamshelo lwamacandelo ahlukeneyo e-elektroniki afana ne-resistors, i-capacitors kunye ne-microchips.Ukuguquguquka koyilo lwePCB kuvumela ulungelelwaniso oluntsonkothileyo lwesekethe, luyenze isetyenziswe ngokubanzi kumashishini ahlukeneyo afana nonxibelelwano, i-aerospace, kunye ne-elektroniki yabathengi.
Imiba eyohlulayo:
1. Umsebenzi:
I-PCM igxile ikakhulu ekuqhubeni umqondiso wedijithali ukubonelela ngokuveliswa kwesandi esikumgangatho ophezulu.Kwelinye icala, iiPCBs zinegalelo ekusebenzeni ngokubanzi kwezixhobo zombane, ukuququzelela ukudityaniswa kwamacandelo ahlukeneyo kunye nokubonelela uzinzo kwinkqubo.Ngelixa ii-PCM ziyinxalenye yeenkqubo zomsindo, ii-PCB zisetyenziswa phantse kuzo zonke izixhobo zombane, ukusuka kwii-smartphones ukuya kwizixhobo zonyango.
2. Uyilo oluntsokothileyo:
I-PCM ikakhulu ibandakanya ii-algorithms zesoftware kunye nobuchule obuphambili bokwenza umqondiso.Ngelixa ifuna ubuchwephesha bobunjineli beaudio kunye nezakhono zokucwangcisa ukwenza ngcono ukusebenza kwayo, ilula ngokwemigaqo yoyilo lomzimba.Ngokwahlukileyo, uyilo lwePCB lufuna ucwangciso olululo, ukubekwa kwecandelo, kunye nohlalutyo lonxibelelwano lombane.Ifuna ulwazi lobunjineli bombane kunye neendlela ezisebenzayo zokuyila ukufezekisa umsebenzi ofunekayo.
3. Ukuguquguquka:
I-PCM yenzelwe ngokukodwa usetyenziso lwe-audio ukuze kuqinisekiswe ukumelwa kwesandi esichanekileyo kunye nokunciphisa ukuphazamiseka.Injongo yayo ephambili kukugcina ingqibelelo yesiginali yomsindo kwi-domain yedijithali.Kwelinye icala, iiPCB azikhawulelwanga kuso nasiphi na isicelo okanye ishishini.Ukuguquguquka kwazo kuzivumela ukuba zilungelelaniswe ukuhlangabezana neemfuno zaso nasiphi na isixhobo sombane, nokuba sisidlali somculo esiphathwayo okanye inkqubo yonxibelelwano ngesathelayithi.
ukuququmbela:
Zombini ii-PCM kunye nee-PCB zinegalelo elibalulekileyo kwinkalo ye-elektroniki, nganye isebenzela injongo eyodwa.I-PCM lukhetho lokuqala lweenjineli zesandi kunye ne-audiophiles kumgangatho womsindo ongenakulinganiswa.IiPCB zisisiseko ekwakhiwe phezu kwaso iisistim ezintsonkothileyo ze-elektroniki, ziqinisekisa uqhagamshelwano olufanelekileyo kunye nozinzo.Nangona ii-PCM kunye nee-PCBs zahluka ngokusebenza kunye noyilo, zihlala zisetyenziswa kunye kwizixhobo zombane, zidibanisa amandla azo awodwa.
Ekugqibeleni, yehla kwiimfuno ezithile zeprojekthi okanye izixhobo zakho.Ukuqonda umahluko kunye neempawu zePCM kunye neePCBs kuya kukwenza ukuba wenze isigqibo esisekelwe kwiimfuno zakho.Ngoko ke nokuba uyakha inkqubo ye-hi-fi okanye udala izixhobo zombane ezisebenzayo, iiPCM kunye neePCB zizixhobo ezibalulekileyo zokuqhubela phambili iteknoloji.
Ixesha lokuposa: Jul-03-2023