Nrhiav cov ntaub ntawv hom suab uas ua & tsis ua haujlwm rau iPhone thiab iPod
Nyob rau hauv cov suab paj nruag digital, cov neeg feem ntau hu cov suab paj nruag ua "MP3." Tab sis qhov no tsis yog qhov tseeb. MP3 xa mus rau ib yam ntawm cov ntaub ntawv suab thiab tsis yog txhua lub suab ntaub ntawv yeej yog ib qho MP3. Yog tias koj siv ib lub iPhone , iPod, lossis lwm yam cuab yeej ntawm Apple, muaj lub sijhawm zoo uas feem ntau ntawm koj lub suab paj nruag tsis nyob hauv hom ntawv MP3 txhua lub sijhawm.
Cov ntaub ntawv zoo li cas yog koj cov nkauj, ces? Tsab xov xwm no piav txog cov ntsiab lus ntawm MP3 ntaub ntawv, qhov ntau dua thiab Apple-nyiam AAC, thiab qee yam ntawm lwm cov suab tawm hom uas ua thiab tsis ua hauj lwm nrog iPhones thiab iPods.
Hais txog cov hom ntawv MP3
MP3 yog luv luv rau MPEG-2 Audio Layer-3, ib cov qauv digital tawm qauv uas yog tsim los ntawm Cov Tsav Piav Qhia Yeeb duab (MPEG), lub koom haum kev lag luam uas tsim cov qauv qhia ntawv.
Ua li cas MP3s Ua Haujlwm
Cov suab paj nruag tau txais kev cawmdim hauv MP3 hom ntawv tau siv tsawg dua qhov qub nkauj tshwj xeeb uas tau siv CD-zoo suab ntawv zoo ib yam li WAV (ntau tshaj qhov ntawd tom qab) MP3s txuag cia chaw los ntawm compressing cov ntaub ntawv uas ua rau cov ntaub ntawv. Hloov cov nkauj ua suab paj nruag rau hauv MP3s yuav tshem tawm ntawm cov ntaub ntawv uas yuav tsis cuam tshuam txog kev mloog, feem ntau yog qhov siab thiab qis kawg ntawm lub suab. Vim tias qee cov ntaub ntawv raug muab tshem tawm, ib qho MP3 tsis zoo tib yam rau nws cov ntaub ntawv CD-zoo thiab raug xa mus ua ib qho "nrawm" compression hom . Qhov poob ntawm qee qhov ntawm lub suab tau ua rau qee cov audiophiles mus thuam MP3s li ua rau kev mloog kev ua haujlwm.
Vim hais tias MP3s muaj ntau dua compressed dua AIFF los yog lwm yam tsis hloov compression formats, MP3s ntau yuav muab cia rau tib qhov chaw ntawm qhov chaw tshaj CD ntaub ntawv zoo.
Thaum lub sij hawm siv los tsim cov suab paj nruag MP3s hloov tau qhov no, feem ntau hais lus siv MP3 yuav siv li ntawm 10% ntawm qhov chaw ntawm cov ntaub ntawv audio CD zoo. Piv txwv, yog tias CD-zoo version ntawm ib zaj nkauj yog 10 MB, lub MP3 version yuav nyob ib ncig ntawm 1 MB.
Npov Cov Nqi thiab MP3s
Lub suab zoo ntawm ib qho MP3 (thiab tag nrho cov suab paj nruag cov ntaub ntawv) yog ntsuas los ntawm nws tus nqi tsawg, nws ua kbps.
Lub siab me ntsis tus nqi, cov ntaub ntawv ntau dua cov ntaub ntawv muaj thiab zoo dua cov suab MP3. Feem ntau cov nqi me me yog 128 kps, 192 kbps, thiab 256 kbps.
Muaj ob hom kev siv me ntsis hauv MP3s: Ntev Npaum Ntsuas Sab Nraud (CBR) thiab Kab Ntsig Sib Npaum Kawg (VBR) . Muaj ntau cov MP3s uas niaj hnub siv VBR, uas ua rau cov ntaub ntawv me me los ntawm kev qee qhov ntawm ib zaj nkauj ntawm tus nqi qis qis, thaum lwm tus neeg tau siv cov nqi ntau dua. Piv txwv, ib ntu ntawm ib zaj nkauj nrog tsuas yog ib qho cuab yeej siv tau yooj yim thiab tuaj yeem yuav muaj qhov sib npaug nrog ntau dua, tab sis ib feem ntawm zaj nkauj nrog ntau txoj kev ntsuas yuav tsum tsis tshua xav kom ntes tau ntau lub suab. Los ntawm kev hloov me ntsis, tag nrho lub suab nrov ntawm ib qho MP3 tau nyob siab siab thaum lub chaw cia khoom siv rau cov ntaub ntawv khaws cia me me.
Cas MP3s Ua Haujlwm Nrog iTunes
MP3 tej zaum yuav yog cov suab nrov tshaj plaws hauv online, tab sis lub iTunes Store tsis muaj suab paj nruag hauv hom ntawv ntawd (ntau tshaj qhov ntawd hauv seem tom ntej). Dua li ntawd, MP3s yog tshaj iTunes thiab nrog rau tag nrho cov iOS no, zoo li lub iPhone thiab iPad. Koj tuaj yeem tau MP3s los ntawm:
- Cov download cov khw muag khoom xws li AmazonMP3 thiab eMusic
- Ripping cov nkauj ntawm CD , nyob ntawm seb koj qhov kev hloov suab paj nruag
- Ntau cov kev pabcuam suab seev-sib koom ua ke.
Tag Nrho Cov Ntawv AAC
AAC, uas yog rau Advanced Audio Coding, yog lub suab digital hom uas tau raug txhawb los ua tus successor rau MP3. AAC feem ntau muaj suab zoo dua li MP3 thaum siv tib qhov chaw disk chaw los yog tsawg dua.
Ntau tus neeg xav tias AAC yog ib hom tsim kua Apple, tab sis qhov no tsis yog. AAC tau tsim los ntawm ib pawg tuam txhab uas muag xws li AT & T Bell Labs, Dolby, Nokia, thiab Sony. Thaum Apple tau txais AAC rau nws cov suab paj nruag, AAC cov ntaub ntawv tuaj yeem raug ntaus rau ntawm ntau yam ntawm cov cuab yeej uas tsis yog Apple, nrog rau cov consoles consoles thiab cov xov tooj txawb khiav Google hauv Android OS, ntawm lwm tus.
Cas AAC Ua Haujlwm
Zoo li MP3, AAC yog ib hom ntaub ntawv los yog cov ntaub ntawv. Yuav kom muab cov suab nrov CD zoo rau hauv cov ntaub ntawv uas tsis tshua muaj chaw cia, cov ntaub ntawv uas yuav tsis cuam tshuam txog kev mloog-dua, feem ntau ntawm qhov siab thiab qis kawg-raug tshem tawm. Raws li cov lus xaus, cov ntaub ntawv AAC tsis zoo tib yam rau cov ntaub ntawv CD, tab sis feem ntau suab zoo txaus tias feem ntau cov neeg tsis pom qhov compression.
Zoo li MP3s, qhov zoo ntawm cov ntaub ntawv AAC yog ntsuas raws li nws qhov kev siv nyiaj tsawg. Ib qho AAC bitrates muaj 128 kbps, 192 kbps, thiab 256 kbps.
Yog vim li cas AAC ua cov sounding zoo dua MP3s. Xav paub ntau ntxiv txog cov lus qhia ntawm qhov sib txawv no, nyeem Wikipedia tsab xov xwm ntawm AAC.
Cas AAC Ua Haujlwm nrog iTunes
Apple tau txais AAC raws nws cov hom ntaub ntawv ntau dua rau cov suab. Txhua zaj nkauj muag tom khw hauv iTunes, thiab txhua zaj nkauj muaj suab los yog downloaded ntawm Apple Music, nyob hauv AAC hom ntawv. Tag nrho AAC cov ntaub ntawv muaj nyob rau hauv cov kev no yog encoded ntawm 256 kbps.
WAV Ua Ntaub Ntawv Thov
WAV yog luv luv rau Waveform Audio Format. Qhov no yog lub suab zoo zoo siv rau cov ntawv thov uas yuav tsum muaj suab zoo, xws li CDs. Cov ntaub ntawv WAV muaj uncompressed, thiab yog li ntawd nqa ntau qhov chaw disk dua MP3s los yog AACs, uas yog muab sib cais.
Vim tias cov ntaub ntawv WAV tsis muaj kev sib txuas (tseem paub tias yog "hom tsis muaj" hom ntawv ), lawv muaj ntau cov ntaub ntawv thiab tsim dua, ntau dua, thiab cov ncauj lus kom ntxaws. Cov ntaub ntawv WAV feem ntau xav tau 10 MB rau txhua 1 feeb ntawm lub suab. Los ntawm kev sib piv, tus MP3 xav tau txog 1 MB rau txhua 1 feeb.
Cov ntaub ntawv WAV tau tshaj cov kua li, tiam sis tsis tshua siv tshwj tsis yog cov audiophiles. Xav paub ntau ntxiv txog hom ntawv WAV .
WMA Daim Ntawv Ua Ntaub Ntawv
WMA stands rau Windows Media Suab. Qhov no yog hom ntaub ntawv txhawb tshaj plaws los ntawm Microsoft, lub tuam txhab uas tsim tau nws. Nws yog hom ntawv siv hauv Windows Media Player, ob leeg ntawm Macs thiab PCs. Nws sib tw nrog MP3 thiab AAC tawm tswv yim thiab muaj cov lus sib xws zoo sib xws thiab ua cov ntawv loj npaum li cov qauv. Nws tsis yog lub iPad, iPad, thiab cov cuab yeej zoo li Apple. Kawm ntxiv txog hom ntawv WMA .
Cov AIFF Lub Hom Phaj
AIFF sawv cev rau Daim Ntawv Sib Hlis ntawm Lub Hom Hloov. Lwm uncompressed lub suab, AIFF yog tsim los ntawm Kua hauv lub xyoo 1980s. Ib yam li WAV, nws siv txog 10 MB ntawm cia ib feeb ntawm suab paj nruag. Vim hais tias nws tsis hlob lub suab, AIFF yog ib hom ntawv zoo dua qub los ntawm audiophiles thiab musicians. Txij li nws tau tsim los ntawm Kua, nws tau tshaj Apple li. Kawm ntxiv txog hom ntawv AIFF .
Lub Kua Lossless Audio Hom Ntawv
Lwm cov kua tshiab, Apple Lossless Audio Codec (ALAC) yog ib qho ua tau zoo rau AIFF. Qhov no version, tso tawm rau xyoo 2004, nws yog hom ntaub ntawv tshwj xeeb. Kua ua nws qhib qhov chaw nyob rau xyoo 2011. Kua Lossless Balances txo cov ntaub ntawv loj nrog tswj lub suab zoo. Cov ntaub ntawv feem ntau yog kwv yees li ntawm 50% me dua cov ntaub ntawv uncompressed, tab sis nrog tsawg poob hauv suab zoo tshaj nrog MP3 lossis AAC. Kawm ntxiv txog ALAC hom ntawv .
FLAC Hom Ntaub Ntawv
Nrov nrog audiophiles, FLAC (Tsis Tsim Lossless Codec) yog ib qho qhib suab hom uas yuav txo tau qhov luaj li cas ntawm 50-60% tsis txo lub suab zoo ntau dhau.
FLAC tsis tau tshaj iTunes los sis iOS no li hauv lub thawv, tab sis nws muaj peev xwm ua hauj lwm nrog cov software ntxiv rau hauv koj lub xov tooj. Kawm ntxiv txog FLAC hom ntawv . I do not know
Twg Lub Filetypes Twg Lub Tshem Tawm Nrog Lub iPad / iPad / iPod
| Tau tshaj? | |
| MP3 | Muaj |
| AAC | Muaj |
| WAV | Muaj |
| WMA | Tsis yog |
| AIFF | Muaj |
| Kua Lossless | Muaj |
| FLAC | Nrog software ntxiv |