Ukubukeka kokucindezeleka komsindo okulahlekile nokuthi kuthinta kanjani umculo we-digital
Yini Eyenza Ukulahlekelwa Kwefomethi Yomsindo?
Igama lokulahlekelwa lisetshenziswe kumsindo wedijithali ukuchaza uhlobo lokucindezela okusetshenziselwa ukugcina idatha yomsindo. I-algorithm esebenzisa ifomethi ye-audio elahlekile iphoqa idatha ezwakalayo ngendlela elahla olunye ulwazi. Lokhu kusho ukuthi umsindo oqoshiwe awufani nendawo yokuqala.
Isibonelo, uma udala uchungechunge lweamafayela e- MP3 ngokudwengula enye yama-CD akho womculo, eminye imininingwane evela ekurekhodweni kokuqala izolahleka - ngakho-ke isikhathi sokulahleka. Lolu hlobo lokucindezela alugcini nje kuphela kumsindo nje noma. Amafayela wesithombe kwifomethi ye-JPEG ngesibonelo futhi ayacindezelwe ngendlela elahlekile.
Ngokuvamile, le ndlela ihluke ekucindezelweni komsindo okulahlekile okusetshenziselwa amafomethi afana ne- FLAC , ALAC nabanye. I-audio kuleli cala icindezelwe ngendlela engashiyi noma iyiphi idatha. Ngakho-ke umsindo ufana nomthombo wokuqala.
Ukusebenza Kokucindezela Kokulahlekelwa Kanjani?
Ukucindezeleka kokulahlekelwa kwenza ucabange oluthile mayelana nezikhathi lapho indlebe yomuntu engabonakali khona. Ithimba lobuchwepheshe lokutadisha umbono ozwakalayo libizwa ngokuthi, ama- psychoacoustics .
Uma ingoma isibonelo ishintshelwe kufomethi yokulahla elahlekile njenge-AAC, i-algorithm ihlaziya zonke izikhathi. Lokho kulahla ukuthi indlebe yomuntu ayikwazi ukuyibona. Ngezikhathi eziphansi kakhulu, lezi zivame ukuhlungwa noma ziguqulwe zibe izibonakaliso ze-mono ezithatha isikhala esincane.
Enye inqubo ebuye isetshenziselwe ukulahla imisindo ethule kakhulu ukuthi umlaleli akakwazi ukuphawula, ikakhulukazi engxenyeni evelele yengoma. Lokhu kuzosiza ukunciphisa usayizi wefayela elilalelwayo ngenkathi kunciphisa umthelela kumgangatho wezwi.
Ukucindezelwa Kwe-Lossy kuthinta kanjani ikhwalithi yomsindo?
Inkinga ngokucindezeleka okulahlekile yukuthi ingakwazi ukwethula izinto zokusebenza. Lezi yimisindo engathandeki engekho ekurekhodeni kwangempela, kodwa yi-imikhiqizo yokucindezela. Ngeshwa kungcolisa ikhwalithi yomsindo futhi kungabonakala ngokukhethekile lapho kusetshenziswa ama-bitrate aphansi.
Kunezinhlobo ezahlukene zezinto zokufakelwa ezingathinta izinga lokurekhoda. Ukuphazamiseka kungenye yezinto ezivame kakhulu ukuthi uzothola kuzo. Lokhu kungenza izigubhu ngokwesibonelo umsindo umsindo buthakathaka ngaphandle kwesikhuni sangempela. Izwi ngengoma lingathinteka futhi. Izwi lomculi lingase lizwise inkambo futhi lingabi nemininingwane.
Kungani Cindezela Umsindo Konke?
Njengoba usuvele wazi, amafomethi amaningi alalelwayo adijithali asebenzisa uhlobo oluthile lokucindezela ukuze agcine umsindo ngendlela ephumelelayo. Kodwa ngaphandle kwalo, amafayela wefayili angaba mkhulu kakhulu.
Isibonelo, ingoma evamile engamaminithi amathathu agcinwe njengefayela le-MP3 ingaba ngu-4 kuya ku-5 Mb ngesayizi. Ukusebenzisa ifomethi ye-WAV ukugcina le ngoma efanayo ngendlela engaqinisekisiwe kungaholela usayizi wefayili cishe angaba ngu-30 Mb - okungenani ubukhulu obuphindwe kasithupha. Njengoba ungabona kusuka kulokhu (ukuhlukumeza kakhulu), izingoma eziphansi kakhulu zingangena kumdlali wakho wezindaba ophathekayo noma i-hard drive yekhompyutheni uma umculo ungacindezelwa.