Dziwani mtundu wa mafayilo omwe samagwira ntchito pa iPhone ndi iPod
Mu nthawi ya nyimbo yadijito, anthu nthawi zambiri amatcha fayilo la nyimbo ndi "MP3." Koma izi siziri zolondola. MP3 imatanthauzira mtundu wina wa fayilo ya audio osati fayilo iliyonse yamakina ya digito ndi MP3. Ngati mumagwiritsa ntchito iPhone , iPod, kapena chipangizo china cha Apple, muli ndi mwayi woti nyimbo zambiri sizili mu MP3.
Kodi ndi fayi yamtundu wanji nyimbo zanu zamagetsi, ndiye? Nkhaniyi ikufotokoza tsatanetsatane wa MP3 filetype, apamwamba kwambiri ndi apulo-okondedwa AAC, ndi ena omwe amawonekera mafayilo a fayilo omwe amachitira komanso samagwira ntchito ndi iPhones ndi iPods.
Zonse Pa Mafomu a MP3
MP3 ndi yochepa kwa MPEG-2 Audio Layer-3, yoyimira mulingo wa digito yokonzedwa ndi gulu la akatswiri ojambula zithunzi (MPEG), thupi la makampani lomwe limapanga miyezo yapamwamba.
Ma MP3s amagwira ntchito
Nyimbo zomwe zimasungidwa pa MP3 zimatenga malo osachepera kusiyana ndi nyimbo zomwezo zomwe zimagwiritsidwa ntchito ngati ma CD ngati WAV (zambiri pamtundu umenewo pambuyo pake). Ma MP3 amatha malo osungirako polemba zinthu zomwe zimapanga fayilo. Kuphwanya nyimbo mu ma MP3s kumaphatikizapo kuchotsa mbali za fayilo yomwe sizakhudza zochitika zomwe zimamvetsera, kawirikawiri zam'munsi komanso zotsika kwambiri zomvetsera. Chifukwa chakuti deta ina yachotsedwa, MP3 siimveka mofanana ndi ma CD ake ndipo imatchedwa " lossy" . Kutayika kwa zigawo zina za audio kwachititsa mafilimu ena kuti azitsutsa ma MP3 omwe amachititsa kuti munthu amvetsere.
Chifukwa ma MP3 ali olemetsedwera kwambiri kuposa AIFF kapena maonekedwe ena osokonezeka, ma MP3 ena akhoza kusungidwa mofanana ndi malo oposa CD.
Ngakhale makonzedwe omwe amagwiritsidwa ntchito popanga ma MP3 angasinthe izi, kuyankhula kwa MP3 kumatenga pafupifupi 10 peresenti ya malo a fayilo ya audio ya CD. Mwachitsanzo, ngati nyimbo ya CD ndi 10 MB, ma MP3 adzakhala pafupi 1 MB.
Zochepa Zamtengo ndi Ma MP3
Utundu wamakono wa MP3 (ndi mafayilo onse ojambula a digito) amayesedwa ndi mlingo wake, wotchedwa kbps.
Kutsika kwapangidwe kakang'ono, deta yambiri yomwe fayilo ili nayo ndikumveka bwino ma MP3. Mitengo yowonjezeka kwambiri ndi 128 kps, 192 kbps, ndi 256 kbps.
Pali mitundu iwiri ya piritsi yomwe amagwiritsidwa ntchito ndi ma MP3: Nthawi Yambiri ya Bit (CBR) ndi Variable Bit Rate (VBR) . Ma MP3 ambiri amasiku ano amagwiritsira ntchito VBR, zomwe zimapangitsa mafayilo kukhala ochepa polemba zigawo zina za nyimbo pang'onopang'ono, pamene ena ali ndi encoded pogwiritsa ntchito maulendo apamwamba. Mwachitsanzo, gawo la nyimbo yokhala ndi chida chimodzi chokha ndi losavuta ndipo likhoza kulembedwa ndi chiwerengero chophatikizidwa kwambiri, pamene mbali zina za nyimbo ndi zida zovuta zogwiritsa ntchito zisamakhale zochepa kuti zitha kulira. Pogwiritsa ntchito mlingo wochepa, khalidwe lonse la MP3 likhoza kukhala lapamwamba pamene zosungirako zofunika pa fayilo zimakhala zochepa.
Ma MP3s amagwira ntchito ndi iTunes
MP3 ikhoza kukhala yotchuka kwambiri yojambula pa intaneti pa intaneti, koma Masitolo a iTunes sapereka nyimbo mu mtundu umenewo (zambiri pa gawo lotsatira). Ngakhale zili choncho, ma MP3 ali ofanana ndi iTunes komanso ndi zipangizo zonse za iOS, monga iPhone ndi iPad. Mungathe kupeza ma MP3 kuchokera ku:
- Zojambula zojambulajambula monga AmazonMP3 ndi eMusic
- Kudula nyimbo kuchokera ku CD , malingana ndi zomwe mukuyimba
- Ntchito zambiri zogawana-mafayilo.
Zonse Zokhudza Fomu ya AAC
AAC, yomwe imayimira Advanced Audio Coding, ndiwotchi ya fayilo yajambula yomwe imalimbikitsidwa kukhala wotsatira wa MP3. AAC kawirikawiri amapereka phokoso lapamwamba kuposa MP3 pamene amagwiritsa ntchito diski malo kapena zochepa.
Anthu ambiri amaganiza kuti AAC ndi ma apulogalamu a Apple, koma izi sizolondola. AAC inakhazikitsidwa ndi gulu la makampani kuphatikizapo AT & T Bell Labs, Dolby, Nokia, ndi Sony. Pamene Apple yatenga AAC chifukwa cha nyimbo zake, mafayilo a AAC angathe kusewera pazinthu zamagetsi zomwe sizinapangidwe ndi apulogalamu, kuphatikizapo masewera a masewera ndi mafoni a m'manja a Android Android OS, pakati pa ena.
Momwe AAC Amagwirira Ntchito
Mofanana ndi MP3, AAC ndi mtundu wa fayilo yosiyidwa. Kuti muzimitsa nyimbo za CD muofayi zomwe zimatenga malo osungirako osungirako, deta yomwe sichidzakhudzanso zowonjezera zomwe mumamva, nthawi zambiri pamapeto ndi pamapeto-zimachotsedwa. Chifukwa cha kuponderezedwa, mafayilo a AAC samveka mofanana ndi mafayilo a CD, koma ambiri amveka bwino kuti anthu ambiri sazindikira kuponderezedwa.
Mofanana ndi ma MP3, khalidwe la fayilo ya AAC limayesedwa molingana ndi mlingo wake. Zambiri za AAC bitrates zikuphatikizapo 128 kbps, 192 kbps, ndi 256 kbps.
Zifukwa zomwe AAC amapanga mauthenga abwino kuposa ma MP3 ndi ovuta. Kuti mudziwe zambiri zazomwe zafotokozedwe pamasambawa, werengani nkhani ya Wikipedia pa AAC.
Momwe AAC amagwirira ntchito ndi iTunes
Apple yatenga AAC monga mafilimu omwe amasankhidwa a audio. Nyimbo zonse zogulitsidwa ku iTunes Store, ndipo nyimbo zonse zidakhamukira kapena kulandidwa kuchokera ku Apple Music, zili mu ma AAC. Zithunzi zonse za AAC zomwe zimaperekedwa mwa njirazi zimadodometsedwa pa 256 kbps.
Vesi la WAV Audio File
WAV ndi yochepa kwa Waveform Audio Format. Imeneyi ndi fayilo yapamwamba yamakono yomwe imagwiritsidwa ntchito pazinthu zomwe zimafuna phokoso lapamwamba, monga ma CD. Maofesi a WAV samasokonezeka, choncho tenga disk space kuposa ma MP3s kapena AACs, omwe amavomerezedwa.
Chifukwa ma fayilo a WAV samasinthasintha (omwe amadziwikanso kuti ndi "yopanda kanthu" ), ali ndi deta zambiri ndipo amawulutsa bwino, osasamala, komanso omveka bwino. Fayilo ya WAV imafunikira 10 MB kwa mphindi imodzi iliyonse ya audio. Poyerekeza, ma MP3 ali ndi 1 MB pa mphindi imodzi iliyonse.
Mawindo a WAV amagwirizana ndi apulogalamu apulogalamu, koma sagwiritsidwa ntchito kawirikawiri kupatula ndi audiophiles. Dziwani zambiri za mawonekedwe a WAV .
WMA Audio File Format
WMA imayimira Windows Media Audio. Ili ndilo fayilo yomwe imalimbikitsa kwambiri ndi Microsoft, kampani yomwe inayambitsa. Ndiwo mtundu wobadwira womwe umagwiritsidwa ntchito mu Windows Media Player, onse pa ma Macs ndi PC. Amapikisana ndi ma MP3 ndi AAC mawonekedwe ndipo amapereka zofanana zofanana ndi mafayilo monga mafomu. Sichigwirizana ndi iPhone, iPad, ndi zipangizo zofanana za Apple. Phunzirani zambiri za mawonekedwe a WMA .
AIFF Audio File Format
AIFF imayimira Fomu ya Kusinthanitsa Fichi. Mtundu wina womvera wosayimitsidwa, AIFF unapangidwa ndi Apple kumapeto kwa zaka za m'ma 1980. Monga WAV, imagwiritsa ntchito pafupifupi 10 MB yosungirako pa miniti ya nyimbo. Chifukwa chakuti sichikulimbitsa mafilimu, AIFF ndi maonekedwe apamwamba kwambiri okondedwa ndi audiophiles ndi oimba. Popeza idapangidwa ndi Apple, zimagwirizana ndi zipangizo za Apple. Phunzirani zambiri za mawonekedwe a AIFF .
Mitundu Yopanda Pulogalamu Yopanda Pulogalamu ya Apple
Pulogalamu ina ya Apple, Apple Lossless Audio Codec (ALAC) ndi wotsatila ku AIFF. Bukuli, lomasulidwa mu 2004, poyamba linali lokhala ndi katundu. Apple inachititsa kuti izi zitheke m'chaka cha 2011. Apple miyeso yopanda malire yochepetsera kukula kwa mafayilo ndi kukhala ndi khalidwe labwino. Mafayilo ake amakhala ochepa kwambiri kuposa maofesi osakanikizidwa, koma ndi zochepa zochepa zomwe zimakhala ndi ma audio kusiyana ndi MP3 kapena AAC. Phunzirani zambiri za mtundu wa ALAC .
Fichi ya Fichi yamafayilo
Wotchuka ndi audiophiles, FLAC (Free Lossless Audio Codec) ndiwonekera yotsegula audio mtundu umene ungachepetse kukula kwa fayilo ndi 50-60% popanda kuchepetsa khalidwe audio kwambiri.
FLAC ikugwirizana ndi iTunes kapena iOS zipangizo kuchokera mubokosi, koma ikhoza kugwira ntchito ndi mapulogalamu ena omwe adaikidwa pa chipangizo chanu. Dziwani zambiri za mtundu wa FLAC . A
Amene Audio Filetypes Amagwirizana ndi iPhone / iPad / iPod
| Zogwirizana? | |
| MP3 | Inde |
| AAC | Inde |
| WAV | Inde |
| WMA | Ayi |
| AIFF | Inde |
| Apple yopanda phindu | Inde |
| FLAC | Ndi mapulogalamu ena |