Indlela i-MP3 ne-AAC ehlukile ngayo, nezinye izinhlobo zefayela le-iPhone

Thola izinhlobo zefayela zomsindo ezingasebenzi & ze-iPhone ne-iPod

Esikhathini somculo we-digital, abantu bavame ukubiza noma iyiphi ifayela lomculo "i-MP3." Kodwa lokho akulona okunembile. I-MP3 ibhekisela kuhlobo oluthile lwefayela elilalelwayo futhi akuzona zonke ifayela le-digital audio eliyi-MP3. Uma usebenzisa i-iPhone , i-iPod, noma enye idivayisi ye-Apple, kunethuba elihle lokuthi iningi lomculo wakho alikho ku-MP3 format nhlobo.

Uhlobo luni lwefayela yizingoma zakho zedijithali, ke? Lesi sihloko sichaza imininingwane yefayela le-MP3, i-Advanced kanye ne-Apple-ethandwayo i-AAC, kanye nezinye izinhlobo zefayela ezilalelwayo ezivamile ezenzayo futhi ezingasebenzi nama-iPhones nama-iPod.

Konke Mayelana nefomethi ye-MP3

I-MP3 ilula ye-MPEG-2 Audio Layer-3, izinga lokuxhumana ledijithali elenzelwe i-Moving Picture Experts Group (MPEG), umzimba wemboni odala izindinganiso zobuchwepheshe.

Ama-MP3s asebenza kanjani
Izingoma ezigcinwe ku-MP3 format zithatha isikhala esingaphansi kunezingoma ezifanayo ezigcinwe ngokusebenzisa ifomethi ye-audio quality ye-CD njengo-WAV (ngaphezulu ngaleyo fomethi kamuva). Ama-MP3s agcina isikhala sokugcina ngokucindezela idatha eyenza ifayela. Ukucindezela izingoma kuma-MP3s kuhilela ukukhipha izingxenye zefayela ezingeke zithinte isipiliyoni sokulalela, ngokuvamile okuphelile kakhulu futhi okuphansi kakhulu komsindo. Ngenxa yokuthi idatha ethile isusiwe, i-MP3 ayizwanga ifana nenguqulo yayo yekhwalithi yeCD futhi ibizwa ngokuthi " ukulahlekelwa" ifomethi yokucindezela . Ukulahlekelwa ezinye izingxenye zomsindo kuye kwabangela ezinye ze-audiophiles ukuba zigxeke ama-MP3 njengokulimaza isipiliyoni sokulalela.

Ngenxa yokuthi ama-MP3s acindezelwe kakhulu kune-AIFF noma amanye amafomethi okucindezela okungalahleki, ama-MP3 amaningi angagcinwa ngesilinganiso esilinganayo kunezingcingo zeCD.

Ngesikhathi izilungiselelo ezisetshenziselwa ukudala ama-MP3s zingashintsha lokhu, ukukhuluma i-MP3 ngokuvamile kuthatha indawo engaba ngu-10% yefayela elilalelwayo le-CD. Isibonelo, uma inguqulo yekhwalithi ye-CD yengoma ingu-10 MB, inguqulo ye-MP3 izoba nge-1 MB.

Amanani ama-Bit nama-MP3s
Ikhwalithi yomsindo we-MP3 (nayo yonke amafayela womculo we-digital) ilinganiswa nesilinganiso sayo kancane, senziwa njenge-kbps.

Ukuphakama kwesilinganiso esincane, idatha ewedlula ifayela likhona futhi ngcono umsindo we-MP3. Amanani we-bit evamile kakhulu angama-128 kps, i-192 kbps, nama-256 kbps.

Kunezinhlobo ezimbili zamazinga amancane asetshenziselwa ama-MP3s: Isixazululo seBit Constant (CBR) ne-Variable Bit Rate (VBR) . Ama-MP3s amaningi anamuhla asebenzisa i-VBR, eyenza amafayela amancane ngokufaka ikhodi kwezinye izingxenye zengoma ngesilinganiso esincane esincane, kuyilapho ezinye zikhokhwa ngokusebenzisa amazinga aphezulu. Isibonelo, ingxenye yoma ingoma eyodwa kuphela elula futhi ingafakwa ikhodi ngezinga elincane lokuncintisana, kuyilapho izingxenye zengoma enezinsimbi eziyinkimbinkimbi kakhulu zidinga ukucindezelwa kancane ukuze zithinte umsindo ogcwele. Ngokushintsha izinga elincane, ikhwalithi yomsindo jikelele we-MP3 ingahlala ephezulu ngenkathi isitoreji esidingekayo ifayela ligcinwe kakhulu.

Ama-MP3s asebenza kanjani ne-iTunes
I-MP3 ingaba ifomethi ethandwa kakhulu yomsindo we-intanethi ku-intanethi, kepha isitolo se-iTunes asihlinzeki umculo ngaleyo fomathi (okuningi kulokho esigabeni esilandelayo). Noma kunjalo, ama-MP3 ahambisana ne-iTunes futhi nawo wonke amadivayisi we-iOS, njenge-iPhone ne-iPad. Ungathola ama-MP3 kusuka:

• Izitolo ze-Digital download ezifana ne- AmazonMP3 ne- eMusic
• Ukukhipha izingoma kusuka ku-CD , kuye ngokuthi izilungiselelo zakho zokuguqula umculo
• Izinsiza eziningi zokwabelana ngomculo.

Konke Mayelana ne-AAC Ifomethi

I-AAC, emele i-Advanced Audio Coding, iyinhlobo yefayili yomsindo we-digital oye wakhuthazwa njengomlandeli we-MP3. I-AAC ngokuvamile inikeza umsindo ophezulu wezinga eliphezulu kune-MP3 ngenkathi usebenzisa inani elifanayo lesikhala sediski noma ngaphansi.

Abantu abaningi bacabanga ukuthi i-AAC yifomethi ye-Apple eyimfihlo, kodwa lokhu akulungile. I-AAC yasungulwa yiqembu lezinkampani ezifaka i-AT & T Bell Labs, i-Dolby, i-Nokia, ne-Sony. Ngesikhathi i-Apple ithathe i-AAC ngomculo wayo, amafayela we-AAC angadlala empeleni kumadivayisi angewona ama-Apple, kufaka phakathi izidakamizwa zegeyimu namafoni omakhalekhukhwini asebenzisa i-Android Android OS, phakathi kwabanye.

Indlela i-AAC esebenza ngayo
Njengama-MP3, i-AAC yifomethi yefayili elahlekile. Ukuze unciphise umsindo we-CD-quality emafayeleni athatha isikhala esincane sokugcina, idatha engayikuthinta isipiliyoni sokulalela-futhi, ngokuvamile esiphezulu futhi esiphansi-isusiwe. Ngenxa yokucindezela, amafayela we-AAC awazwanga afana namafayela ekhwalithi ye-CD, kodwa ngokuvamile ezwakala kahle kangangokuthi abantu abaningi abaqapheli ukucindezelwa.

Njengama-MP3s, ikhwalithi yefayela le-AAC lilinganiswa ngokususelwa kwisilinganiso salo esincane. Izingoma ezijwayelekile ze-AAC zihlanganisa 128 kbps, 192 kbps, nama-256 kbps.

Izizathu zokuthi i-AAC ikhiqize umsindo ozwakalayo wokuzwakala kunama-MP3s unzima. Ukuze ufunde kabanzi ngemininingwane yobuchwepheshe yalolu hlu, funda isihloko se-Wikipedia ku-AAC.

Indlela i-AAC isebenza ngayo ne-iTunes
I-Apple yamukele i-AAC njengefomethi yayo yefayili ekhethiwe yokulalelwayo. Zonke izingoma ezithengiswa ku-iTunes Store, futhi zonke izingoma ezisakazwa noma zilandwa kusuka ku-Apple Music, zifomathi ye-AAC. Wonke amafayela we-AAC anikezwa ngalezi zindlela afakwe ikhodi ku-256 kbps.

Ifomethi yefayela ye-WAV Audio

I-WAV ifushane ku-Format ye-Waveform Audio. Leli fayela elilalelwayo eliphezulu elisetshenziselwa izinhlelo zokusebenza ezidinga umsindo ophezulu, njenge-CD. Amafayela we-WAV awaxinyiwe, ngakho-ke thatha isikhala sediski ngaphezu kwama-MP3s noma ama-AAC, okucindezelwayo.

Ngenxa yokuthi amafayela we-WAV awanakunyakaziswa (futhi awaziwa ngokuthi "ifomethi engalahlekelwa" ), aqukethe idatha eminingi futhi akhiqize imisindo engcono, eqondayo futhi eningiliziwe. Ifayela le-WAV ngokuvamile lidinga i-10 MB yonke iminithi engu-1 yomsindo. Ngokuqhathanisa, izidingo ze-MP3 ezingaba ngu-1 MB yonke iminithi engu-1.

Amafayela we-WAV ahambisana namadivayisi we-Apple, kodwa awasetshenziswanga kakhulu ngaphandle kwama-audiophiles. Funda kabanzi mayelana nefomethi ye-WAV .

Ifomethi yefayela le-WMA Audio

I-WMA imele iWindows Media Audio. Lona uhlobo lwefayili olukhuthazwa kakhulu yi-Microsoft, inkampani eyayilungisa. Yifomethi yasendlini esetshenziswe ku-Windows Media Player, kokubili kuma-Macs nama-PC. Iphikisana namafomethi e-MP3 ne-AAC futhi inikeza ukucindezela okufanayo kanye nefayili njengalezo zakhiwo. Akuhambisani ne-iPhone, i-iPad, namadivaysi afanayo e-Apple. Funda kabanzi mayelana nefomethi ye-WMA .

Ifomethi yefayela ye-AIFF Audio

I-AIFF imele ifomethi yefayela lokushintshana komsindo. Enye ifomethi yokulalelwayo engaxinyiwe, i-AIFF yenzelwe i-Apple ngasekupheleni kwawo-1980. Njengo-WAV, isebenzisa cishe u-10 MB wesitoreji ngomzuzu womculo. Ngenxa yokuthi ayicindezeli umsindo, i-AIFF iyifomethi ephezulu kakhulu ekhethwe yi-audiophiles nabaculi. Njengoba sakhiwe yi-Apple, iyahambisana namadivayisi we-Apple. Funda kabanzi mayelana nefomethi ye-AIFF .

I-Apple Lossless File File Format

Enye into eyenziwe nge-Apple, i-Apple Lossless Audio Codec (ALAC) iyimpumelelo ku-AIFF. Le nguqulo, ekhishwe ngo-2004, ekuqaleni yayiyifomethi yokuthengisa. Apple yenze umthombo ovulekile ngo-2011. Apple izilinganiso ezingenasici ezinganciphisa usayizi wefayela ngokugcina ikhwalithi ezwakalayo. Amafayela alo ngokuvamile anezincane ezingaba ngu-50% kunamafayela angaxhunyiwe, kodwa ngokulahlekelwa okuncane kunani elilalelwayo kunama-MP3 noma i-AAC. Funda kabanzi mayelana nefomethi ye-ALAC .

Ifomethi yefayela ye-FLAC Audio

Okudumile ngama-audiophiles, i-FLAC (i-Lossless Audio Audio Codec) iyimfomethi evulekile yomsindo enganciphisa ubukhulu befayela ngo-50-60% ngaphandle kokunciphisa ikhwalithi yomsindo kakhulu.

I-FLAC ayihambisani namadivayisi we-iTunes noma i-iOS ngaphandle kwebhokisi, kodwa ingasebenza nge-software eyengeziwe efakwe kudivayisi yakho. Funda kabanzi mayelana nefomethi ye-FLAC . A

Yimaphi amafayela we-Audio ahambisana ne-iPhone / iPad / iPod