Nrog kev tshwm sim ntawm digital thev naus laus zis hauv ntiaj teb cov suab paj nruag, cov lus nug tau sawv ntawm kev xaiv cov hau kev rau kev zom, ua, thiab khaws cov suab. Ntau hom qauv tau tsim, feem ntau cov tseem ua tiav tau zoo siv rau ntau lub sijhawm. Conventionally, lawv tau faib ua ob pawg loj: muaj suab nrov ploj thiab ploj los. Ntawm cov qub, FLAC hom ntawv yog tus ua; ntawm tom kawg, tus thawj coj ncaj ncees tau ploj mus rau MP3. Yog li dab tsi yog qhov sib txawv loj ntawm FLAC thiab MP3, thiab lawv puas tseem ceeb rau tus mloog?
Dab tsi yog FLAC thiab MP3
Yog tias kaw suab kaw nyob rau hauv FLAC hom lossis hloov mus rau nws los ntawm lwm qhov tsis muaj peev txheej, txhua qhov kev xev thiab cov ntaub ntawv ntxiv txog cov ntsiab lus ntawm cov ntaub ntawv (metadata) tau txais kev cawmdim. Cov qauv ntaub ntawv yog raws li nram no:
- plaub txoj kab cim cim (FlaC);
- Streaminfo metadata (tsim nyog los tsim khoom rov ua dua tshiab);
- Lwm cov metadata block (yeem)
- audio ntas.
Nws yog qhov ib txwm ua los mus sau ncaj qha ntaub ntawv FLAC thaum ua si cov nkauj nyob los yog los ntawm cov ntaub ntawv vinyl.
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Thaum txhim kho algorithms rau compressing MP3 ntaub ntawv, lub psychoacoustic qauv ntawm ib tug neeg raug coj ua lub hauv paus. Yooj yim muab, thaum hloov dua siab tshiab, cov ntu ntawm cov teeb meem uas peb lub pob ntseg tsis hnov lossis tsis pom zoo yuav raug "txiav" ntawm lub suab ntws. Ntxiv nrog rau, nrog qhov sib thooj ntawm cov khoom tso suab ntawm qee theem, lawv tuaj yeem hloov mus rau mono lub suab. Lub ntsiab tseem ceeb rau lub suab zoo yog lub npov compression - ntsis npaum li cas:
- txog 160 kbit / s - tsis tshua muaj txiaj ntsig, ntau qhov kev cuam tshuam thib peb, ua nrawm ntau zaus;
- 160-260 kbit / s - qhov nruab nrab zoo, qhov nruab nrab ntawm kev rov ua tiav ntawm qhov loj kawg;
- 260-320 kbit / s - qhov kev ua haujlwm siab, zoo ib yam, sib sib zog nqus suab nrog kev cuam tshuam tsawg kawg.
Qee lub sij hawm lub siab bitrate yog tiav los ntawm hloov ua lwm yam ntaub ntawv tsawg bitrate. Qhov no yuav tsis txhim kho lub suab zoo hauv txhua txoj kev - cov ntaub ntawv hloov pauv ntawm 128 mus rau 320 ntsis / s tseem yuav zoo li 128-ntsis ntawv.
Cov lus: Sib piv ntawm cov yam ntxwv thiab qhov sib txawv ntawm audio audio
| Qhov ntsuas | Flac | MP3 tus nqi qis npaum li cas | Kho siab mp3 |
| Hom ntawv compression | tsis plam | nrog poob | nrog poob |
| Suab los zoo | siab | tsawg | siab |
| Qhov ntim ntawm ib zaj nkauj | 25-200 Mb | 2-5 Mb | 4-15 Mb |
| Teem Caij Nyoog | mloog cov nkauj ntawm cov suab kaw lus zoo, tsim cov nkauj khaws cia ua suab paj nruag | teeb tsa suab sab nraud, khaws cia thiab ua si cov ntaub ntawv ntawm cov khoom siv nrog qhov cim xeeb tsawg | tsev mloog suab paj nruag, khaws cia hauv lub catalog ntawm nqa khoom siv |
| Kev nplua | PCs, qee cov smartphones thiab ntsiav tshuaj, cov neeg siv khoom zoo tshaj plaws | feem ntau cov khoom siv hluav taws xob | feem ntau cov khoom siv hluav taws xob |
Txhawm rau kom hnov qhov sib txawv ntawm lub MP3 zoo thiab FLAC cov ntaub ntawv, koj yuav tsum muaj lub pob ntseg zoo rau kev ntaus suab paj nruag lossis "qib siab" audio system. MP3 ntau dua li txaus los mloog suab paj nruag hauv tsev lossis ntawm kev mus ncig, thiab FLAC tseem tshuav ntau cov nkauj, DJs thiab cov kaw suab.
