Isikhokelo sokuFama iAudio yokuFamathela

Ukuqonda iiFomathi zeFayile yomsindo: Isiseko

Iifomathi zefayile yeAudio zigqiba ukuba idatha yesandi sedijithali igcinwa, icinezelwe, kwaye isasazwe njani. Embindini wayo, ifomathi yomsindo ichaza ubume kunye nendlela yokufaka ikhowudi esetyenziselwa ukumela amaza omsindo we-analog njengolwazi lwedijithali. Oku kuquka iinkcukacha zomlinganiselo wesampulu (kangaphi ngesekhondi i-audio isampuliwe), ubunzulu be-bit (ukuchaneka kwesampulu nganye), kunye ne-algorithms yoxinzelelo olunciphisa ubungakanani befayile ngelixa ligcina umgangatho. Ukukhetha ifomathi yomsindo kuchaphazela kakhulu ubungakanani befayile, umgangatho wesandi, ukuhambelana, kunye neemfuno zokugcina. Iifomathi ezingaxinzelelwanga njenge-WAV zigcina yonke intwana yedatha yeaudiyo yoqobo kodwa zenze iifayile ezinkulu, ngelixa iifomati ezicinezelweyo njengeMP3 zisebenzisa ii-algorithms ezinobugocigoci ukususa amaza omoya angaqondakaliyo ekuveni kwabantu. Ukuqonda oku kurhweba kubalulekile ekukhetheni ifomathi eyiyo kwiimfuno zakho ezithile, nokuba ugcina urekhodiweyo, usasaza umculo, okanye wenza iipodcasts.

I-Lossless vs. I-Lossy Compression: Umgangatho vs. Ubungakanani

Umahluko osisiseko kwiifomathi zomsindo uphakathi kweendlela zokucinezela ezilahlekileyo kunye nelahleko. Iifomathi eziLassless ezifana ne-FLAC, ALAC, kunye ne-WAV zigcina i-100% yolwazi lwe-audio ye-original, iyenza ibe yinto efanelekileyo kwiinjongo zoovimba, umsebenzi we-audio oqeqeshiweyo, kunye neemeko apho umgangatho awukwazi ukuthotywa. Ezi fomati zisebenzisa i-algorithms yoxinzelelo enokwakha ngokutsha ngokugqibeleleyo idatha yoqobo yomsindo, efana nendlela iifayile ze-ZIP ezicinezela ngayo amaxwebhu ngaphandle kokuphulukana nolwazi. Iifomathi ezilahlekileyo ezifana neMP3, AAC, kunye ne-OGG zifezekisa ubungakanani beefayile ezincinci ngokususa ngokusisigxina idatha yeaudio ethathwa njengengabalulekanga kangako kwimbono yabantu. Iimodeli ezikwizinga eliphezulu le-psychoacoustic zihlalutya ukuba zeziphi iifrikhwensi ezinokulahlwa ngempembelelo encinci kumgangatho obonwayo. Ngelixa i-320 kbps MP3 ivakala kakuhle kakhulu kubaphulaphuli abaninzi, ii-audiophiles kunye neengcali zihlala zikhetha iifomati ezingalahlekiyo zokumamela okubalulekileyo kunye nokuqhubekeka phambili. Ukhetho luxhomekeke kwizinto eziphambili kuwe: umgangatho ophezulu kunye nobungqina bexesha elizayo ngokuchasene nobukhulu beefayile eziphathekayo zokuphulaphula imihla ngemihla.

Iifomathi zomsindo ezidumileyo uthelekiso oluneenkcukacha

IMP3 ihlala iyeyona fomati yeaudio ihambelanayo jikelele, exhaswa phantse sisixhobo ngasinye kunye neqonga ukusukela ekupheleni kweminyaka yoo-1990. Ubhalo lwayo oluguquguqukayo lwe-bitrate luvumela ucinezelo olusebenzayo ngelixa igcina umgangatho ofanelekileyo kwi-192-320 kbps. Nangona kunjalo, ubudala beMP3 bubonisa ekusebenzeni kwayo koxinzelelo xa kuthelekiswa neefomati ezintsha. I-AAC, ephuhliswe njengelandela leMP3, ibonelela ngoxinzelelo olungcono kunye nomgangatho kwiibitrate ezilinganayo kwaye ixhasa iimpawu eziphambili ezifana neaudio yeetshaneli ezininzi kunye nokuphathwa ngcono kwezandi ezidlulayo. I-FLAC iye yaba ngumgangatho wegolide wokucinezelwa kweaudio engalahlekiyo, inikezela ngeesayizi zeefayile malunga ne-50-60% ye-WAV engaxinzelelwanga ngelixa igcina iaudio egqibeleleyo. Ixhaswa ngokubanzi ngezixhobo zeaudiophile kunye nesoftware, nangona inkxaso yesixhobo esiphathwayo iyahluka. I-ALAC ibonelela ngoxinzelelo olungenalahleko olufanayo olulungiselelwe i-Apple ecosystems, ngelixa i-OGG Vorbis ibonelela ngoxinzelelo olubalaseleyo lwelahleko njengenye indlela yomthombo ovulekileyo weMP3 kunye ne-AAC. Iifomathi ezikhethekileyo ezifana ne-DSD zibonelela abantu abathanda i-audio-resolution ephezulu, nangona izibonelelo ezisebenzayo kwiifomathi ezikumgangatho ophezulu wePCM zihlala zixoxwa.

• MP3: Ukuhambelana kwendalo yonke, inkqubo yendalo ekhulileyo, umgangatho owaneleyo kwi-bitrate ephezulu
• I-AAC: Ukusebenza koxinzelelo oluphezulu, umgangatho ongcono kuneMP3, ekhethwa ziinkonzo zokusasaza
• I-FLAC: Uxinzelelo olungenalahleko, lugqwesileyo kugcino lwamaxwebhu kunye nokuphulaphula okubalulekileyo
• WAV: Umgangatho ongaxinzelelwanga, ukuhambelana okuphezulu kwiindawo zobungcali

Iinkcazo zobuGcisa eziBalulekileyo

Umyinge wesampulu kunye nobunzulu bentwana yimigaqo esisiseko emisela isilingi yomgangatho wefomathi yesandi. Umgangatho we-CD osemgangathweni usebenzisa isampuli ye-44.1 kHz kunye nobunzulu be-16-bit, ethi ibambe iifrikhwensi ukuya kuthi ga kwi-22 kHz kwaye ibonelele nge-96 dB yoluhlu oluguqukayo. Amazinga aphezulu esampulu afana ne-96 kHz okanye i-192 kHz axhaphakile ekurekhodweni kobuchule kodwa abonelela ngeenzuzo ezithandabuzekayo zokudlala, njengoko ukuva komntu kunqabile ukuba kudlule ngaphaya kwe-20 kHz kwaye uninzi lweenkqubo zokudlala azikwazi ukuvelisa i-ultrasonic frequencies ngokuchanekileyo. Ubunzulu beBit bunempembelelo ebonakalayo ngakumbi kunereyithi yesampulu kuninzi lwezicelo. Ukurekhodwa kwe-24-bit kubonelela nge-144 dB yoluhlu oluguqukayo lwethiyori kunye negumbi lentloko elibalulekileyo ngexesha lokurekhoda kunye nokuxuba, ukuthintela ukunqunyulwa kwedijithali kunye nokuvumela ukusetyenzwa kwesandi sendalo esingaphezulu. Nangona kunjalo, ukuhanjiswa kokugqibela, i-16-bit ihlala yanele ngenxa yomgangatho wengxolo kwiindawo ezininzi zokuphulaphula. I-bitrate kwiifomathi ezicinezelweyo inxulumana ngokuthe ngqo nomgangatho: 128 kbps yamkelekile ngokubanzi kwintetho, 192 kbps kukuphulaphula umculo oqhelekileyo, kunye nama-320 kbps wokumamela okubalulekileyo komsindo ocinezelweyo.

Ukukhetha iFomathi eLungileyo kwiiMfuno zakho

Ukukhetha ifomathi kufuneka ihambelane nemeko yakho yosetyenziso kunye nemiqobo. Ngomsebenzi weaudio yobuchwephesha, qala ngeefomathi ezingacinezelwanga njenge-WAV okanye i-AIFF yokurekhoda kunye nokuhlelwa, emva koko ugcine iinkosi kwi-FLAC yokugcina ixesha elide. Lo msebenzi ugcina umgangatho ophezulu ngelixa ubonelela ngeesayizi ezifanelekileyo zeefayile zokugcinwa kunye nokusabalalisa. Abavelisi bomculo bahlala begcina iinguqulelo ezininzi zefomathi: iinkosi ezinesisombululo esiphezulu, ukuhanjiswa komgangatho weCD, kunye neefomathi ezicinezelweyo zamaqonga e-intanethi. Izicelo zabathengi zifuna iingqwalasela ezahlukeneyo. Kumathala eencwadi omculo wobuqu, iFLAC ibonelela ngowona mgangatho ulungileyo womgangatho kunye nempumelelo yokugcina ukuba izixhobo zakho ziyayixhasa. Abasebenzisi bemfonomfono banokukhetha i-AAC okanye iMP3 ye-bitrate ephezulu ukuze bahambelane ngokubanzi kunye nomgangatho ofanelekileyo. Imixholo yokusasaza ithanda ucinezelo olusebenzayo: Abadali bepodcast bahlala besebenzisa iMP3 ukuhambelana kwendalo yonke, ngelixa iinkonzo zokusasaza umculo zihlala zisebenzisa i-AAC okanye i-OGG yomgangatho ofanelekileyo wokuya kwi-bandwidth. Qwalasela umthamo wakho wogcino, umda we-intanethi, izixhobo zokudlala, kunye neemfuno zomgangatho xa usenza izigqibo zefomathi.

Ubungqina bexesha elizayo kunye neNguqulelo yeFomathi

Itekhnoloji yefomathi yomsindo iyaqhubeka nokuvela, kunye neekhowudi ezintsha ezibonelela ngokuphucuka koxinzelelo kunye neempawu. Iifomathi ezifana ne-Opus zigqwesa kwizicelo ze-latency ephantsi kwaye ziphumeza umgangatho obalaseleyo kwi-bitrate ephantsi, zizenza zilungele unxibelelwano lwelizwi kunye nokusasaza. Ngeli xesha, iifomathi zomsindo ezisekwe kwinto zixhasa amava okuntywila anje ngesandi sendawo kunye neDolby Atmos, emele umda olandelayo kwiaudio yabathengi. Xa usakha iindawo ezigcina iirekhodi ezirekhodiweyo zexesha elide, beka phambili iifomati ezivulekileyo, ezibhalwe kakuhle ngaphezu kwezisombululo zobunini. Indalo yeFLAC yomthombo ovulekileyo kunye nokwamkelwa okubanzi kuyenza ibe lolona khetho lubalaseleyo lobungqina bexesha elizayo oovimba abangenalahleko. Uxinzelelo lwelahleko, iifomati ezimiselweyo ezifana ne-AAC kunye neMP3 ziya kuhlala zihambelana amashumi eminyaka, ngelixa iifomathi ezintsha zinokubonelela ngokusebenza ngcono kodwa zingaqinisekanga ngenkxaso yexesha elide. Cinga ngokugcina iinguqulelo ezininzi zefomathi yomxholo obalulekileyo: iinkosi ezingalahlekiyo zokugcinwa komgangatho kunye neenguqulelo ezicinezelweyo ezihambelana ngokubanzi zokufikeleleka kwangoko.