Ukuba ufuna ukukrazula ii-CD zakho zomculo kwifomathi yomsindo njenge- MP3 , i- WMA , i- AAC , njl., Okanye ufuna ukuguqula phakathi kwamafomathi, ngoko yinto efanelekileyo ukwazi ukuba i- CBR ne-VBR ithetha ntoni ngaphambi kokuba uqale.
Ngezantsi i-primer malunga nalezi zifinyezo ezimbini, zisebenza njani kunye nokwahlukana phakathi kweendlela ezimbini zokudibanisa.
Qaphela: I- CBR kunye ne-VBR zikwazo izifinyezo zezinye iinkcukacha ezinxulumene ne-tech njengeefayile ze-CDisplay Archived Comic Book kunye ne- volume boot rekodi , kodwa akukho nantoni na enokuyenza ngekhowudi njengoko kuchaziwe apha.
CBR Encoding
I-CBR imele i- bitrate rhoqo , kwaye yindlela yokwenza ikhodi egcina i- bitrate enye. Xa idatha yomsindo ikhowudiwe (nge- codec ), isetyenzisiweyo esilungisiweyo sisetyenziswa, njenge-128, 256 okanye i-320 Kbps.
Inzuzo yokusebenzisa indlela yeCBR kukuba i-audio data iyasebenza ngokukhawuleza (xa kuthelekiswa neVBR). Nangona kunjalo, iifayile ezidalweyo azange zilungiswe kakuhle kumgangatho kunye nokugcinwa njengokuba kunjalo neVBR.
I-CBR iyanceda xa kufikelelwe kwiifayile ze-multimedia. Ukuba uxhumano lukhawulelwe ukwenza kuphela kuphela, luthi, 320 Kbps, kwaye i-bitrate rhoqo ye-300 Kbps ngesibini okanye ngaphantsi iya kuba luncedo kunokuba yatshintshile ekuhambeni kokusasazeka kuba iyakwazi ukuya phezulu kunezinto ezivunyelwe.
VBR Encoding
I-VBR inokufutshane kwi-bitrate eguqukileyo kwaye, njengokuba ucinga ukuba, into ehlukileyo ye-CBR. Yindlela yokudibanisa eyenza ukuba i-bitrate yefayili yomsindo ikhulise okanye iyancipha. Oku kusebenza ngebala lokujolisa; I-encoder ye-LAME, umzekelo, ingaba phakathi kwe-65 Kbps kunye ne-320 Kbps.
NjengoCBR, ifomathi zomsindo ezifana ne-MP3, i-WMA, i- OGG , njl nenkxaso yeVBR.
Inzuzo enkulu kunazo zonke ze-VBR xa kuthelekiswa neCBR iyinqanaba elivakalayo lokufakela ubungakanani befayili. Uyakwazi ukufezekisa ubungakanani befayile encinci ngokufakela i-audio ngeVBR ngaphandle kweCBR ngenxa yendlela ye-bitrate eguqulwa ngayo ngokohlobo lwesandi.
Ngokomzekelo, i-bitrate iya kuncitshiswa kakhulu ukwenzela ukuba ingoma okanye ingcipheko yengoma. Kwiindawo ezininzi eziyinkimbinkimbi zengoma equlethe i-frequencies, i-bitrate iya kunyuswa (kufika kwi-320 Kbps) ukuqinisekisa ukuba umgangatho ophezulu uyagcinwa. Olu hlobo kwi-bitrate luya kunceda ukunciphisa indawo yokugcina efunekayo xa kuthelekiswa neCBR.
Nangona kunjalo, ukungonakali kweefayili ezifakwe kwi-VBR yiyo ukuba azinakuhambelana namadivayisi asekudala njenge-CBR. Kwakhona kuthatha ixesha elide ukudibanisa i-audio usebenzisa i-VBR kuba inkqubo inzima kakhulu.
Nguwuphi na onokumkhetha?
Ngaphandle kokuba unqatshelwe yi-hardware endala exhasa kuphela amafomathi alalelwayo ekhowudiweyo esebenzisa i-CBR, ngoko ke i-VBR yindlela ephakanyisiweyo. Inkxaso ye-VBR kwiixhobo ze-hardware ezifana ne-MP3 players, i- PMPs , njl., Isetyenziswe ukuhlaselwa, kodwa ezi ntsuku ziqhelekileyo ziyimpawu eziqhelekileyo.
Njengoko kuchazwe ngentla, i-VBR ikunika ibhalansi ephezulu phakathi kwekhwalithi kunye nobukhulu befayile. Ngoko ke kuyilungele iifowuni ezigcinwe ngokugcina okanye apho ufuna ukusetyenziswa ngokufanelekileyo kwezinye izisombululo zokugcina ezifana ne- USB flash drives , amakhadi amashishini, njl njl.