Ngokufika kobuchwepheshe bedijithali emhlabeni womculo, kwakukhona umbuzo mayelana nokukhethwa kwezindlela zokugubungula, ukucubungula nokugcina umsindo. Izakhiwo eziningi zakhiwe, eziningi zazo ezisetshenziswa ngokuphumelelayo ezimweni ezihlukahlukene. Ngokuvamile, zihlukaniswe ngamaqembu amakhulu amabili: ukulahlekelwa komsindo (ukungalahleki) nokulahlekelwa (ukulahlekelwa). Phakathi kwalabo abakudala, i-FLAC ihola, phakathi kwalezi zinsuku, i-monopoly yangempela eya ku-MP3. Ngakho yiziphi umehluko omkhulu phakathi kwe-FLAC ne-MP3, futhi ingabe zibalulekile kumlaleli?
Yini i-FLAC ne-MP3
Uma umsindo urekhodiwe kufomethi ye-FLAC noma uguqulwa kuwo kusukela kwenye ifomethi engalahleki, lonke uhla lwamagceke nolwazi olwengeziwe mayelana nokuqukethwe kwefayela (imethadatha) kulondolozwa. Isakhiwo sefayili sinjengalokhu:
- string string identification (FlaC);
- Imethadatha ye-Streaminfo (kunesidingo sokusetha imishini yokudlala);
- ezinye izithiyo zemethadatha (ozikhethela);
- i-audiofremy.
Umkhuba wokuqopha ngokuqondile i-FLAC-amafayela ngesikhathi sokusebenza komculo "bukhoma" noma kusuka kumarekhodi e-vinyl usakazeke.
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Ekuthuthukiseni ama-algorithms wokucindezela amafayela we-MP3, imodeli ye-psychoacoustic yomuntu ithathwe njengesisekelo. Kulula nje, ngesikhathi sokuguqulwa, lezo zincenye zendlebe ukuthi izindlebe zethu aziqondi noma aziqondi ngokugcwele "ziyonqunyulwa" kusukela ekusakazweni komsindo. Ngaphezu kwalokho, uma imifudlana ye-stereo ifana ngezigaba ezithile, ingashintshwa ibe mono umsindo. Umgomo oyinhloko wekhwalithi yomsindo i-compression ratio - bitrate:
- kufika ku-160 kbps - ikhwalithi ephansi, iningi lokuphazamiseka komuntu wesithathu, ukugoqa ngezikhathi;
- 160-260 kbps - izinga elilinganiselwe, ukukhulumisana ngokuphindaphindiwe kwama frequencies;
- 260-320 kbps - izinga eliphakeme, i-uniform, umsindo ojulile okungenani ukuphazanyiswa.
Ngezinye izikhathi izinga elincane eliphakeme lifinyelelwa ngokuguqula ifayela eliphansi lentengo. Lokhu akuthuthukisi ikhwalithi yomsindo - amafayela aguqulwe kusuka ku-128 kuya ku-320 bps azobe ezwakala njengefayela le-128-bit.
Ithebulethi: Ukuqhathaniswa kwezici kanye nokwahlukana kwamafomethi alalelwayo
| Inkomba | I-FLAC | I-bitrate ephansi ye-mp3 | I-bitrate ephakeme ye-mp3 |
| Ifomethi yokucindezela | ukulahlekelwa | ngokulahlekelwa | ngokulahlekelwa |
| Ikhwalithi yomsindo | phezulu | phansi | phezulu |
| Umqulu wengoma eyodwa | 25-200 MB | 2-5 MB | 4-15 MB |
| Injongo | ukulalela umculo kumasistimu alalelwayo aphezulu, ukudala ingobo yomculo | faka ukuncenceza, ugcine futhi udlale amafayela kumadivayisi anememori encane | ekhaya ukulalela umculo, ukugcina ikhathalogi kumadivayisi aphathekayo |
| Ukuhambisana | Ama-PC, amanye ama-smartphones namaphilisi, abadlali abaphezulu | amadivayisi amaningi kagesi | amadivayisi amaningi kagesi |
Ukuze uzwe umehluko phakathi kwefayela eliphezulu ne-FLAC-ifayela eliphezulu, kufanele ube nensimbi evelele yomculo, noma uhlelo lokulalelwayo "oluphambili". Ukuze ulalele umculo ekhaya noma emgwaqeni, i-MP3 format ingaphezu kokwanele, futhi i-FLAC ihlala iningi labaculi, ama-DJ kanye nama-audiophiles.
