Ingabe Isilinganiso Sesixazululo Sithinta Ikhwalithi Yomculo?
I-kHz ifushane kilohertz, futhi isilinganiso semvamisa (imijikelezo ngomzuzwana). Ngomsindo wedijithali, lesi silinganiso sichaza inombolo yezinhlamvu zedatha esetshenziswe ngomzuzwana ukumela umsindo we-analog kwifomu ledijithali. Lezi chunks zedatha ziyaziwa njengezinga lesampula noma imvamisa yesampula.
Le ncazelo ivame ukudideka ngenye igama ethandwayo ekulalelwayo kwe-digital, okuthiwa i- bitrate (kulinganiswa nge-kbps). Noma kunjalo, umehluko phakathi kwalezi zimiso ezimbili yilokho izinyathelo ze-bitrate zenza ukuthi isampuli siningi kangakanani (ubukhulu bama-chunks) kunokuba inani lezinhlamvu (imvamisa).
Qaphela: i- kHz ngezinye izikhathi ibizwa ngokuthi isilinganiso sampula, isikhathi sokusampula, noma imijikelezo ngomzuzwana.
Ama-Sampling Amanani Ejwayelekile avunyelwe ukuqukethwe kwe-Digital Music
Ngomsindo wedijithali amazinga esampula evamile kakhulu ozohlangana nawo afaka:
- I-8 kHz yenkulumo, i- audiobooks , njll.
- I-22 kHz ye-analog mono eqoshiwe eqoshiwe njengamarekhodi e-vinyl namakhasethi e-cassette
- I-32 kHz yokusakaza umculo, iziteshi zomsakazo
- I-44.1 kHz isetshenziselwa ama-CD alalelwayo futhi ngokuvamile isilinganiso somculo womculo olayishiwe (njenge-iTunes) kumafomethi afana ne- MP3 , AAC , WMA , nabanye
- I-48 ne-96 kHz isetshenziselwa imishini ephezulu yokuchaza kanye nokulalelwayo okwenziwe ngomsebenzi
Ingabe i-kHz Inquma I-Audio Quality?
Ngokwalokho, izinga eliphezulu le-kHz elisetshenzisiwe, ngcono izinga elizwakalayo. Lokhu kungenxa yamakhodi amaningi wedatha asetshenziselwa ukuchaza isimo se-analog wave.
Lokhu kuvame ukuyiqiniso esimweni somculo we-digital oqukethe ukuxuba okuxubile kwama frequencies. Noma kunjalo, le mbono iyawa phansi uma usebenza nezinye izinhlobo zomsindo we-analog njengenkulumo.
Izinga lokutadisha okuthandwayo lokukhuluma liyi-8 kHz; ngezansi kwekhwalithi yeCD audio at 44.1 kHz. Lokhu kungenxa yokuthi izwi lomuntu linomkhawulo wamaphesenti angaba ngu-0.3 kuya ku-3 kHz. Ngalesi sibonelo engqondweni, i-kHz ephakeme ayisho njalo umsindo wekhwalithi engcono.
Okungaphezu kwalokho ukuthi njengoba iningi likhuphukela kumazinga abantu abaningi abakwazi ukuzwa (ngokuvamile azungeze i-20 kHz), kuye kwaphakanyiswa ukuthi ngisho nalawo ma-inaudible angathinta kakhulu izinga elizwakalayo.
Ungakwazi ukuhlola lokhu ngokulalela okuthile ngevolumu eliphezulu ephezulu ukuthi idivayisi yakho yomsindo isekela kodwa ukuthi akufanele uzwe, futhi ungathola ukuthi kuye ngokuthi imishini yakho, empeleni uzozwa ukuchofoza, izinkomba, nezinye izandi .
Lezi zomsindo zisho ukuthi izinga lesampula libekwe kakhulu. Ungathenga imishini ehlukile engase isekele lezo zikhathi noma uyanciphisa izinga lokulinganisa kokunye okuphathekayo okungaphezu kokulawula, okufana no 44.1 kHz.