AAC vs. MP3: I-ITunes Test Quality Sound

Yiyiphi i-encoding eyona nto ilungileyo kuMgangatho wokuphulaphula?

Uninzi lwama-audiophile-abantu abanomdla ophezulu kwaye baxabisa kakhulu umgangatho ophezulu ovakalayo-ngokuqhelekileyo bayamzonda i-MP3 nezinye iifomati zomsindo wedijithali kuba ifomathi isebenzisa ukunyanzelisa okususa ulwazi kwiifayile zedijithali ukugcina indawo. Kuyinyani ukuba ezi fomathi zisusa ulwazi, kodwa abaninzi abaphulaphuli abaphulaphuli abakwazi ukuva ilahleko. Njengomphulaphuli ophakathi kunye nomthengi womculo, ndaqhuba uvavanyo ukuba ndifumanise ukuba ifomathi enye yenze enye inomgangatho ozwakalayo.

Kukholelwa kakhulu ukuba iifayile ze- AAC -ifomathi yomculo ekhethiweyo ye-iTunes kunye neTunes Store-izandi kakuhle kwaye ithatha indawo encinane kune-MP3 yengoma efanayo. Ndibeka le ngcamango kuvavanyo olunzima ukukunceda ukuba unqume ukuba yeyiphi ifomathi yefayile oyisebenzisayo kwiingoma kwielayibrari yakho iTunes nakwi-iPhone yakho kunye ne-iPod.

Ukuqhuba ifomathi yefayile yomsindo ukukhupha , ndifakela iingoma ezimbini ngeendlela ezahlukeneyo: njenge 128 Kbps AAC kunye neeFayili , njengama-192 Kbps AAC kunye neefayili ze-MP3, kunye neefayile eziyi-256 Kbps kunye ne-MP3. Inombolo ephezulu ye-Kbps, inkulu ifayile, kodwa ingcono umgangatho-ubuncinci kwimfundiso. Kwiifayile zonke, ndasebenzisa i-encoder eyakhelwe iTunes.

Izifundo zovavanyo

Ukuvavanya kwam, ndakhetha amaculo amabini: i-"Sage Wild", evulekileyo, eqhelekileyo, "i-Mountain Goats, kunye nenqwelo ephakamileyo, ethi" Ukuhamba kwiJane, "kunye noGimme Gimmes.

"I-Wild Sage" igcwele iipianos eziqhenqileyo kunye negitare ezithatywe ngomunwe / ezicatshulwa ngomunwe, ngokucula okuphezulu.

Ndiyikhethile kuba ndiyathemba ukuba ezo ziqendu ziza kubonakalisa iinkcukacha ezininzi kwiinguqu ezahlukeneyo zefayili.

Ngesinye icala, "Ukushiya kwi-Jet Plane," ngokukhawuleza, ngokukhawuleza, ngokukrakra, kunye nezigubhu ezixakekileyo. Le ngoma izethemba ngokubonisa ibanzi elongezelelweyo kwaye idibanise ezinye izinto ezidambisayo "I-Wild Sage" ayiyi kuba.

Ndasebenzisa ikopi yam CD yezo zombini iingoma-mhlawumbi umgangatho ophezulu kakhulu okhoyo kum-njengesiseko.

Nantsi into endiyifumeneyo:

256 Kbps

• I-Wild Sage: zombini iinguqu zengoma zivakala kakhulu kwi-256 Kbps. Ndiyakuva ngokucacileyo ukutshitshiswa kwetayiti kunye nokuphefumula kwezwi ngaphandle kokuphazamiseka naphi na. Iinguqulelo ze-MP3 kunye ne-AAC zivakala ngokufanayo. Akukho mdlali ocacileyo apha. I-MP3 version yi-1.2MB encinci, nangona kunjalo.
• Ukushiya kwi-Jet Plane: Iimeko ezifanayo apha. Ingoma ivakala kakhulu. Izwi lucacile ngeengcinga ezifihlakeleyo kunye nomqondo oqhelekileyo wokukhanya, kodwa akukho nezandi ezingafaniyo.

192 Kbps

• I-Wild Sage: Le ngqungquthela izwakala ingqungquthela xa ithelekiswa ne-256 Kbps. Nangona kunjalo, akukho nto ecacileyo phakathi kwe-AAC ne-MP3. I-MP3 i-1MB encinane.
• Ukushiya kwi-Plane yeJet: Umzekelo uqobo. Akukho njenga-256 Kbps kodwa iyafana phakathi kweefomathi ezimbini zeefayile .

128 Kbps

• Sage Wild: Ekugqibeleni umehluko. Kule nguqulo, inguqulo ye-AAC icacile ngakumbi kwaye ilula ngaphezu kwe-MP3, ejongene nobunzima obuncinane kunye nokudibanisa kunye nezinye izandi. Ubukhulu befayile buphantse ngokufanayo, okwenza i-AAC ingumdlali ocacileyo apha.
• Ukushiya kwi-Jet Plane: Apha i-AAC iphakamileyo ngokukodwa kwi-drum. Ngaphandle koko, iingoma zivakala ngokufanayo kwaye zifana nobukhulu obufanayo.

Isiphelo

Nangona kukho, ngokungathandabuzekiyo, ukungafani kweziza ezivakalayo zeefayili ezintathu, zivakala ngokulinganayo. Nangona kunokubakho nkcazelo ethe xaxa kwi-256 Kbps MP3, kunzima kwindlebe engafundile ukuqonda, kwaye iifayile zinkulu kunezinye iinguqulelo. Indawo kuphela oyoyiva ngayo umahluko ekupheleni kwee-128 Kbps iikhowudi, kodwa andiyinconyayo loo nto.

Ngoko, kunikezelwa kwezi ziphumo zokuvavanya, kubonakala ngathi ingxoxo phakathi kwe-AAC ne-MP3 ingahla kumbandela wongcamango, imbono okanye iindlebe ezingcono kunoko.

Uluhlu lwefayile ngokuCwangcisa Uhlobo / Umlinganiselo